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Developed in C# with .NET, this Windows Forms app provides contemporary inventory tracking and management solutions for business processes

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SYNCVERSE STUDIO

Point of Sale and Inventory Management System

A comprehensive, enterprise-grade Point of Sale system built with .NET 8.0 and Windows Forms, providing complete retail management solutions including inventory control, sales processing, customer relationship management, invoicing, payment processing, and real-time analytics.

Table of Contents

Project Overview

Purpose

SYNCVERSE STUDIO is designed to streamline retail operations by providing an integrated solution for:

  • Efficient point-of-sale transaction processing with modern interface
  • Real-time inventory management and stock tracking
  • Customer relationship management with purchase history and loyalty programs
  • Comprehensive invoicing and multi-method payment processing
  • Role-based access control for enhanced security
  • Advanced analytics and business intelligence reporting
  • Multi-payment method support including QR code generation for mobile payments

Scope

The application serves three primary user roles with distinct capabilities:

graph TD
    A[SYNCVERSE STUDIO] --> B[Administrator]
    A --> C[Cashier]
    A --> D[Inventory Clerk]
    
    B --> B1[User Management]
    B --> B2[System Configuration]
    B --> B3[Comprehensive Reporting]
    B --> B4[Audit Logs]
    B --> B5[Analytics Dashboard]
    
    C --> C1[Point of Sale Operations]
    C --> C2[Customer Management]
    C --> C3[Transaction Processing]
    C --> C4[Invoice Generation]
    C --> C5[Payment Processing]
    
    D --> D1[Product Management]
    D --> D2[Category Management]
    D --> D3[Supplier Management]
    D --> D4[Stock Control]
    D --> D5[Inventory Reports]
    
    style A fill:#14B8A6,stroke:#0D9488,color:#fff
    style B fill:#3B82F6,stroke:#2563EB,color:#fff
    style C fill:#22C55E,stroke:#16A34A,color:#fff
    style D fill:#A855F7,stroke:#9333EA,color:#fff
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Project Status

  • Version: 1.0.0
  • Status: Production Ready
  • Last Updated: October 2025
  • Framework: .NET 8.0
  • Platform: Windows Desktop Application

Key Features

Point of Sale System

  • Modern, intuitive cashier interface with real-time dashboard
  • Product search and filtering by category with image display
  • Shopping cart with real-time calculations and stock validation
  • Multiple payment methods: Cash, Card, Mobile/QR
  • Automatic change calculation for cash transactions
  • QR code generation for mobile and cryptocurrency payments
  • Transaction hold and resume functionality
  • Barcode scanning support with ZXing.Net integration
  • Professional invoice printing with company branding
  • Walk-in and registered customer support

Inventory Management

  • Complete product lifecycle management with CRUD operations
  • Category and supplier management systems
  • Stock level tracking with automated low-stock alerts
  • Comprehensive inventory movement logging
  • Product image management with upload and preview
  • SKU and barcode support for product identification
  • Cost and selling price tracking with profit margin calculations
  • Bulk import and export capabilities
  • Real-time stock updates during transactions

Customer Relationship Management

  • Customer profile management with encrypted data storage
  • Purchase history tracking and analytics
  • Loyalty points system for customer retention
  • Walk-in customer support for quick transactions
  • Customer data encryption for privacy compliance
  • Customer analytics and behavioral insights
  • Repeat customer identification
  • Customer lifetime value calculations

Invoicing and Payment Processing

  • Automated invoice generation with unique numbering system
  • Professional invoice printing with customizable templates
  • Multiple payment method support (Cash, Card, Mobile, Mixed)
  • Partial payment tracking and balance management
  • Payment link generation for remote payments
  • Invoice status management (Active, Paid, Void, Overdue)
  • Tax calculation with configurable rates
  • Payment gateway integration ready
  • Receipt delivery options (Print, Email, SMS)

Analytics and Reporting

  • Real-time sales dashboard with key performance indicators
  • Revenue and profit tracking with trend analysis
  • Sales trend visualization with interactive charts
  • Invoice status distribution analytics
  • Product popularity analysis and rankings
  • Inventory performance reports
  • Staff performance metrics
  • Comprehensive audit trail for all transactions
  • Export capabilities (PDF, Excel, CSV)

Security and Compliance

  • Role-based access control (RBAC) system
  • BCrypt password hashing for secure authentication
  • User authentication and session management
  • Comprehensive audit logging for all operations
  • Customer data encryption for privacy
  • Permission-based feature access
  • IP address tracking for security events
  • Secure database connection management

Technology Stack

Core Framework

Technology Version Purpose Documentation
.NET 8.0 Application framework Microsoft Docs
C# 12 Programming language C# Guide
Windows Forms 8.0 User interface framework Windows Forms
Entity Framework Core 8.0.0 Object-relational mapping EF Core Docs

Database

Technology Version Purpose Role
SQL Server 2019+ Primary database Production database server
SQL Server LocalDB Latest Development database Local development environment
T-SQL - Query language Database operations and procedures

NuGet Packages

Package Version Purpose License
Microsoft.EntityFrameworkCore 8.0.0 Data access layer MIT
Microsoft.EntityFrameworkCore.SqlServer 8.0.0 SQL Server provider MIT
Microsoft.EntityFrameworkCore.Tools 8.0.0 EF Core CLI tools MIT
BCrypt.Net-Next 4.0.3 Password hashing MIT
FontAwesome.Sharp 6.3.0 Icon library MIT
MaterialSkin.2 2.1.0 Material design UI MIT
QRCoder 1.7.0 QR code generation MIT
ZXing.Net 0.16.9 Barcode scanning Apache 2.0
QuestPDF 2023.12.6 PDF invoice generation MIT
Newtonsoft.Json 13.0.3 JSON serialization MIT
System.Drawing.Common 8.0.0 Image processing MIT
System.Windows.Forms.DataVisualization 1.0.0-prerelease Charts and graphs MIT

Development Tools

  • Visual Studio 2022 or later - Primary IDE
  • SQL Server Management Studio (SSMS) - Database management
  • .NET 8.0 SDK - Build and runtime environment
  • Git - Version control system
  • NuGet Package Manager - Dependency management

System Architecture

Architectural Pattern

SYNCVERSE STUDIO follows a layered architecture with clear separation of concerns:

graph TB
    subgraph "Presentation Layer"
        A[Windows Forms Views]
        A1[LoginForm]
        A2[MainDashboard]
        A3[EnhancedCashierDashboard]
        A4[ProductManagement]
        A5[AnalyticsView]
    end
    
    subgraph "Business Logic Layer"
        B[Services]
        B1[AuthenticationService]
        B2[DatabaseInitializer]
    end
    
    subgraph "Data Access Layer"
        C[Entity Framework Core]
        C1[ApplicationDbContext]
        C2[Migrations]
    end
    
    subgraph "Database Layer"
        D[(SQL Server)]
        D1[(POSDB)]
    end
    
    A --> B
    B --> C
    C --> D
    
    style A fill:#3B82F6,stroke:#2563EB,color:#fff
    style B fill:#22C55E,stroke:#16A34A,color:#fff
    style C fill:#A855F7,stroke:#9333EA,color:#fff
    style D fill:#EF4444,stroke:#DC2626,color:#fff
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Application Flow

flowchart TD
    Start([User Login]) --> Auth{Authentication}
    Auth -->|Success| Role{User Role?}
    Auth -->|Failure| Error[Display Error]
    Error --> Start
    
    Role -->|Administrator| AdminDash[Administrator Dashboard]
    Role -->|Cashier| CashierDash[Cashier Dashboard]
    Role -->|Inventory Clerk| InventoryDash[Inventory Clerk Dashboard]
    
    AdminDash --> AdminFeatures[User Management<br/>System Config<br/>Reports & Analytics<br/>Audit Logs]
    
    CashierDash --> CashierFeatures[Point of Sale<br/>Customer Management<br/>Sales History<br/>Real-time Metrics]
    
    InventoryDash --> InventoryFeatures[Product Management<br/>Category Management<br/>Supplier Management<br/>Inventory Reports]
    
    AdminFeatures --> AuditLog[(Audit Log)]
    CashierFeatures --> AuditLog
    InventoryFeatures --> AuditLog
    
    style Start fill:#14B8A6,stroke:#0D9488,color:#fff
    style Auth fill:#F97316,stroke:#EA580C,color:#fff
    style Role fill:#A855F7,stroke:#9333EA,color:#fff
    style AdminDash fill:#3B82F6,stroke:#2563EB,color:#fff
    style CashierDash fill:#22C55E,stroke:#16A34A,color:#fff
    style InventoryDash fill:#EC4899,stroke:#DB2777,color:#fff
    style AuditLog fill:#6B7280,stroke:#4B5563,color:#fff
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Point of Sale Transaction Flow

flowchart TD
    Start([Start Transaction]) --> SelectProduct[Product Selection]
    SelectProduct --> Search{Search/Filter}
    Search -->|Category| FilterCat[Filter by Category]
    Search -->|Name| SearchName[Search by Name]
    Search -->|Barcode| ScanBarcode[Scan Barcode]
    
    FilterCat --> AddCart[Add to Shopping Cart]
    SearchName --> AddCart
    ScanBarcode --> AddCart
    
    AddCart --> ValidateStock{Stock Available?}
    ValidateStock -->|No| StockError[Display Error]
    ValidateStock -->|Yes| UpdateCart[Update Cart]
    
    StockError --> SelectProduct
    UpdateCart --> ReviewCart[Review Cart]
    
    ReviewCart --> AdjustQty{Adjust Quantities?}
    AdjustQty -->|Yes| UpdateCart
    AdjustQty -->|No| ApplyTax[Apply Tax Rate]
    
    ApplyTax --> SelectPayment{Select Payment Method}
    
    SelectPayment -->|Cash| CashPayment[Enter Cash Amount]
    SelectPayment -->|Card| CardPayment[Process Card]
    SelectPayment -->|Mobile/QR| QRPayment[Generate QR Code]
    
    CashPayment --> CalcChange[Calculate Change]
    CardPayment --> ProcessCard[Card Transaction]
    QRPayment --> ShowQR[Display QR Code]
    
    CalcChange --> SelectCustomer
    ProcessCard --> SelectCustomer
    ShowQR --> SelectCustomer
    
    SelectCustomer{Customer Type?} -->|Walk-in| WalkIn[Walk-in Customer]
    SelectCustomer -->|Existing| ExistingCust[Select Customer]
    SelectCustomer -->|New| NewCust[Create Customer]
    
    WalkIn --> Complete[Complete Transaction]
    ExistingCust --> Complete
    NewCust --> Complete
    
    Complete --> CreateSale[Create Sale Record]
    CreateSale --> GenInvoice[Generate Invoice]
    GenInvoice --> RecordPayment[Record Payment]
    RecordPayment --> UpdateInventory[Update Inventory]
    UpdateInventory --> AuditLog[(Create Audit Log)]
    AuditLog --> Receipt{Receipt Option?}
    
    Receipt -->|Print| PrintReceipt[Print Invoice]
    Receipt -->|Email| EmailReceipt[Email Invoice]
    Receipt -->|SMS| SMSReceipt[SMS Receipt]
    Receipt -->|View| ViewReceipt[View on Screen]
    
    PrintReceipt --> End([Transaction Complete])
    EmailReceipt --> End
    SMSReceipt --> End
    ViewReceipt --> End
    
    style Start fill:#14B8A6,stroke:#0D9488,color:#fff
    style Complete fill:#22C55E,stroke:#16A34A,color:#fff
    style End fill:#3B82F6,stroke:#2563EB,color:#fff
    style StockError fill:#EF4444,stroke:#DC2626,color:#fff
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Data Model

Entity Relationship Diagram

erDiagram
    User ||--o{ Sale : "processes"
    User ||--o{ Invoice : "creates"
    User ||--o{ Payment : "processes"
    User ||--o{ InventoryMovement : "records"
    User ||--o{ AuditLog : "generates"
    User ||--o{ HeldTransaction : "holds"
    User ||--o{ PaymentLink : "creates"
    
    Category ||--o{ Product : "contains"
    Supplier ||--o{ Product : "supplies"
    
    Product ||--o{ SaleItem : "sold_in"
    Product ||--o{ InvoiceItem : "invoiced_in"
    Product ||--o{ InventoryMovement : "tracked_in"
    
    Customer ||--o{ Sale : "purchases"
    Customer ||--o{ Invoice : "receives"
    Customer ||--o{ PaymentLink : "pays_via"
    Customer ||--o{ HeldTransaction : "holds"
    
    Sale ||--|{ SaleItem : "contains"
    Sale ||--o| Invoice : "generates"
    Sale ||--o{ Payment : "paid_by"
    
    Invoice ||--|{ InvoiceItem : "contains"
    Invoice ||--o{ Payment : "paid_by"
    Invoice ||--o{ PaymentLink : "linked_to"
    
    User {
        int Id PK
        string Username UK
        string Password
        string Email
        string FirstName
        string LastName
        enum Role
        bool IsActive
        datetime CreatedAt
        datetime UpdatedAt
    }
    
    Product {
        int Id PK
        string Name
        string Description
        string Barcode UK
        string SKU UK
        int CategoryId FK
        int SupplierId FK
        decimal CostPrice
        decimal SellingPrice
        int Quantity
        int MinQuantity
        string ImagePath
        bool IsActive
        bool IsSyncedToOnlineStore
        datetime LastSyncedAt
        string OnlineStoreProductId
    }
    
    Sale {
        int Id PK
        string InvoiceNumber UK
        int CustomerId FK
        int CashierId FK
        decimal TotalAmount
        decimal TaxAmount
        decimal DiscountAmount
        enum PaymentMethod
        datetime SaleDate
        enum Status
    }
    
    Invoice {
        int Id PK
        string InvoiceNumber UK
        int CustomerId FK
        int CreatedByUserId FK
        decimal SubTotal
        decimal TaxAmount
        decimal DiscountAmount
        decimal TotalAmount
        decimal PaidAmount
        decimal BalanceAmount
        enum Status
        datetime InvoiceDate
        datetime DueDate
        int SaleId FK
    }
    
    Payment {
        int Id PK
        string PaymentReference UK
        int InvoiceId FK
        int SaleId FK
        decimal Amount
        enum PaymentMethod
        enum Status
        string TransactionId
        string PaymentGateway
        int ProcessedByUserId FK
        datetime PaymentDate
    }
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Core Data Entities

User Entity

Column Type Constraints Description
Id int PK, Identity Unique user identifier
Username nvarchar(50) Unique, Required Login username
Password nvarchar(255) Required BCrypt hashed password
Email nvarchar(100) Required User email address
FirstName nvarchar(50) Required User first name
LastName nvarchar(50) Required User last name
Role nvarchar(20) Required Administrator, Cashier, InventoryClerk
IsActive bit Default: 1 Account status flag
CreatedAt datetime2 Default: GETDATE() Account creation timestamp
UpdatedAt datetime2 Default: GETDATE() Last update timestamp

Relationships:

  • One-to-Many with Sales (as Cashier)
  • One-to-Many with Invoices (as Creator)
  • One-to-Many with Payments (as Processor)
  • One-to-Many with InventoryMovements
  • One-to-Many with AuditLogs

Product Entity

Column Type Constraints Description
Id int PK, Identity Unique product identifier
Name nvarchar(100) Required Product name
Description nvarchar(255) Nullable Product description
Barcode nvarchar(50) Unique, Nullable Product barcode
SKU nvarchar(50) Unique, Nullable Stock keeping unit
CategoryId int FK, Nullable Reference to Category
SupplierId int FK, Nullable Reference to Supplier
CostPrice decimal(18,2) Required Purchase cost from supplier
SellingPrice decimal(18,2) Required Retail selling price
Quantity int Default: 0 Current stock level
MinQuantity int Default: 10 Reorder threshold
ImagePath nvarchar(255) Nullable Product image file path
IsActive bit Default: 1 Product availability status
IsSyncedToOnlineStore bit Default: 0 E-commerce sync status
LastSyncedAt datetime2 Nullable Last sync timestamp
OnlineStoreProductId nvarchar(100) Nullable External product ID
CreatedAt datetime2 Default: GETDATE() Creation timestamp
UpdatedAt datetime2 Default: GETDATE() Last update timestamp

Relationships:

  • Many-to-One with Category
  • Many-to-One with Supplier
  • One-to-Many with SaleItems
  • One-to-Many with InvoiceItems
  • One-to-Many with InventoryMovements

Sale Entity

Column Type Constraints Description
Id int PK, Identity Unique sale identifier
InvoiceNumber nvarchar(20) Unique, Required Format: INV-YYYYMMDD-HHMMSS
CustomerId int FK, Nullable Reference to Customer
CashierId int FK, Required Reference to User (Cashier)
TotalAmount decimal(18,2) Required Final transaction amount
TaxAmount decimal(18,2) Default: 0 Calculated tax amount
DiscountAmount decimal(18,2) Default: 0 Applied discount
PaymentMethod nvarchar(20) Required Cash, Card, Mobile, Mixed
SaleDate datetime2 Default: GETDATE() Transaction timestamp
Status nvarchar(20) Required Pending, Completed, Cancelled, Returned

Relationships:

  • Many-to-One with Customer
  • Many-to-One with User (Cashier)
  • One-to-Many with SaleItems
  • One-to-One with Invoice
  • One-to-Many with Payments

Invoice Entity

Column Type Constraints Description
Id int PK, Identity Unique invoice identifier
InvoiceNumber nvarchar(20) Unique, Required Format: INV-YYYYMMDD-HHMMSS
CustomerId int FK, Nullable Reference to Customer
CustomerName nvarchar(100) Nullable Walk-in customer name
CreatedByUserId int FK, Required User who created invoice
SubTotal decimal(18,2) Required Sum of line items
TaxAmount decimal(18,2) Default: 0 Calculated tax
DiscountAmount decimal(18,2) Default: 0 Applied discount
TotalAmount decimal(18,2) Required Final invoice amount
PaidAmount decimal(18,2) Default: 0 Amount received
BalanceAmount decimal(18,2) Required Remaining balance
Status nvarchar(20) Required Active, Paid, Void, Overdue
InvoiceDate datetime2 Default: GETDATE() Invoice creation date
DueDate datetime2 Nullable Payment due date
Notes nvarchar(500) Nullable Additional notes
VoidReason nvarchar(500) Nullable Reason for voiding
VoidedAt datetime2 Nullable Void timestamp
VoidedByUserId int FK, Nullable User who voided invoice
SaleId int FK, Nullable Linked sale transaction

Relationships:

  • Many-to-One with Customer
  • Many-to-One with User (Creator)
  • Many-to-One with User (Voider)
  • One-to-One with Sale
  • One-to-Many with InvoiceItems
  • One-to-Many with Payments
  • One-to-Many with PaymentLinks

Payment Entity

Column Type Constraints Description
Id int PK, Identity Unique payment identifier
PaymentReference nvarchar(50) Unique, Required Unique payment reference code
InvoiceId int FK, Nullable Reference to Invoice
SaleId int FK, Nullable Reference to Sale
Amount decimal(18,2) Required Payment amount
PaymentMethod nvarchar(20) Required Cash, Card, Mobile, Online
Status nvarchar(20) Required Pending, Completed, Failed, Refunded
TransactionId nvarchar(100) Nullable External transaction ID
PaymentGateway nvarchar(50) Nullable Payment gateway name
Notes nvarchar(500) Nullable Payment notes
FailureReason nvarchar(500) Nullable Reason for failure
ProcessedByUserId int FK, Required User who processed payment
PaymentDate datetime2 Default: GETDATE() Payment timestamp

Relationships:

  • Many-to-One with Invoice
  • Many-to-One with Sale
  • Many-to-One with User (Processor)

Customer Entity

Column Type Constraints Description
Id int PK, Identity Unique customer identifier
FirstName nvarchar(50) Nullable Customer first name
LastName nvarchar(50) Nullable Customer last name
Phone nvarchar(20) Nullable, Encrypted Customer phone number
Email nvarchar(100) Nullable, Encrypted Customer email address
Address nvarchar(255) Nullable Customer address
LoyaltyPoints int Default: 0 Accumulated loyalty points
CreatedAt datetime2 Default: GETDATE() Registration timestamp

Relationships:

  • One-to-Many with Sales
  • One-to-Many with Invoices
  • One-to-Many with PaymentLinks
  • One-to-Many with HeldTransactions

Category Entity

Column Type Constraints Description
Id int PK, Identity Unique category identifier
Name nvarchar(100) Required Category name
Description nvarchar(255) Nullable Category description
IsActive bit Default: 1 Category status
CreatedAt datetime2 Default: GETDATE() Creation timestamp

Relationships:

  • One-to-Many with Products

Supplier Entity

Column Type Constraints Description
Id int PK, Identity Unique supplier identifier
Name nvarchar(100) Required Supplier company name
ContactPerson nvarchar(100) Nullable Contact person name
Phone nvarchar(20) Nullable Supplier phone number
Email nvarchar(100) Nullable Supplier email address
Address nvarchar(255) Nullable Supplier address
IsActive bit Default: 1 Supplier status
CreatedAt datetime2 Default: GETDATE() Registration timestamp

Relationships:

  • One-to-Many with Products

InventoryMovement Entity

Column Type Constraints Description
Id int PK, Identity Unique movement identifier
ProductId int FK, Required Reference to Product
UserId int FK, Required User who recorded movement
MovementType nvarchar(20) Required Sale, Purchase, Adjustment, Transfer, Return
Quantity int Required Quantity moved (positive or negative)
Reference nvarchar(100) Nullable Reference document number
CreatedAt datetime2 Default: GETDATE() Movement timestamp

Relationships:

  • Many-to-One with Product
  • Many-to-One with User

AuditLog Entity

Column Type Constraints Description
Id int PK, Identity Unique log identifier
UserId int FK, Required User who performed action
Action nvarchar(100) Required Action description
TableName nvarchar(50) Nullable Affected table name
RecordId int Nullable Affected record ID
OldValues nvarchar(MAX) Nullable Previous values (JSON)
NewValues nvarchar(MAX) Nullable New values (JSON)
Timestamp datetime2 Default: GETDATE() Action timestamp
IpAddress nvarchar(45) Nullable User IP address

Relationships:

  • Many-to-One with User

HeldTransaction Entity

Column Type Constraints Description
Id int PK, Identity Unique transaction identifier
TransactionCode nvarchar(50) Unique, Required Unique hold code
CustomerId int FK, Nullable Reference to Customer
CustomerName nvarchar(100) Nullable Walk-in customer name
HeldByUserId int FK, Required User who held transaction
SubTotal decimal(18,2) Required Cart subtotal
TaxAmount decimal(18,2) Default: 0 Tax amount
DiscountAmount decimal(18,2) Default: 0 Discount amount
TotalAmount decimal(18,2) Required Total amount
CartItemsJson nvarchar(MAX) Required Cart items (JSON)
Notes nvarchar(500) Nullable Hold notes
HeldAt datetime2 Default: GETDATE() Hold timestamp
ResumedAt datetime2 Nullable Resume timestamp
IsCompleted bit Default: 0 Completion status

Relationships:

  • Many-to-One with Customer
  • Many-to-One with User (Holder)

PaymentLink Entity

Column Type Constraints Description
Id int PK, Identity Unique link identifier
LinkCode nvarchar(50) Unique, Required Unique payment link code
InvoiceId int FK, Nullable Reference to Invoice
CustomerId int FK, Nullable Reference to Customer
Amount decimal(18,2) Required Payment amount
Description nvarchar(200) Nullable Payment description
Status nvarchar(20) Required Active, Paid, Expired, Cancelled
ExpiryDate datetime2 Required Link expiration date
PaidAt datetime2 Nullable Payment timestamp
PaymentId int FK, Nullable Reference to Payment
CreatedByUserId int FK, Required User who created link
CreatedAt datetime2 Default: GETDATE() Creation timestamp

Relationships:

  • Many-to-One with Invoice
  • Many-to-One with Customer
  • Many-to-One with Payment
  • Many-to-One with User (Creator)

OnlineStoreIntegration Entity

Column Type Constraints Description
Id int PK, Identity Unique integration identifier
StoreName nvarchar(100) Required Online store name
Platform nvarchar(50) Required Shopify, WooCommerce, Magento, Custom
ApiKey nvarchar(500) Nullable API key (encrypted)
ApiSecret nvarchar(500) Nullable API secret (encrypted)
StoreUrl nvarchar(500) Nullable Store URL
WebhookUrl nvarchar(500) Nullable Webhook endpoint
IsEnabled bit Default: 1 Integration status
LastSyncDate datetime2 Nullable Last sync timestamp
LastSyncStatus nvarchar(20) Required Never, Success, Failed, InProgress
LastSyncMessage nvarchar(500) Nullable Sync status message
CreatedAt datetime2 Default: GETDATE() Creation timestamp
UpdatedAt datetime2 Default: GETDATE() Last update timestamp

Relationships:

  • No direct relationships (configuration entity)

Installation Guide

Prerequisites

Before installing SYNCVERSE STUDIO, ensure your system meets the following requirements:

System Requirements

  • Operating System: Windows 10 (version 1809 or later) or Windows 11
  • Processor: Intel Core i3 or equivalent (i5 or higher recommended)
  • RAM: 4 GB minimum (8 GB recommended)
  • Storage: 500 MB for application + database space
  • Display: 1366x768 minimum resolution (1920x1080 recommended)
  • Network: Internet connection for initial setup and updates

Software Requirements

  1. .NET 8.0 Runtime (Desktop)

  2. SQL Server 2019 or later

    • Options:
      • SQL Server Express (Free): Download
      • SQL Server Developer Edition (Free): Download
      • SQL Server LocalDB (Development): Included with Visual Studio

  3. Visual Studio 2022 (For Development)

Installation Steps

Step 1: Clone the Repository

# Clone the repository
git clone https://github.com/yourusername/syncversestudio.git

# Navigate to project directory
cd syncversestudio

Step 2: Restore NuGet Packages

# Restore all NuGet packages
dotnet restore syncversestudio/syncversestudio.csproj

Step 3: Configure Database Connection

  1. Open syncversestudio/Data/ApplicationDbContext.cs
  2. Update the connection string in the OnConfiguring method:
optionsBuilder.UseSqlServer("Data Source=YOUR_SERVER_NAME;Initial Catalog=POSDB;Integrated Security=True;Trust Server Certificate=True");

Or update dbconfig.json in the root directory:

{
  "ConnectionString": "Data Source=YOUR_SERVER_NAME;Initial Catalog=POSDB;Integrated Security=True;Trust Server Certificate=True"
}

Step 4: Create Database

Option A: Using SQL Scripts (Recommended)

# Navigate to Database folder
cd Database

# Run the main database creation script
sqlcmd -S YOUR_SERVER_NAME -E -i CreateDatabase.sql

# Run the invoicing and payment tables migration
sqlcmd -S YOUR_SERVER_NAME -E -i AddInvoicingAndPaymentTables.sql

Option B: Using Entity Framework Migrations

# Create database and apply migrations
dotnet ef database update --project syncversestudio

# Verify database creation
sqlcmd -S YOUR_SERVER_NAME -E -Q "SELECT name FROM sys.databases WHERE name = 'POSDB'"

Step 5: Build the Application

# Clean previous builds
dotnet clean syncversestudio/syncversestudio.csproj

# Build in Release mode
dotnet build syncversestudio/syncversestudio.csproj --configuration Release

# Verify build success
# Expected output: Build succeeded. 0 Warning(s). 0 Error(s).

Step 6: Run the Application

# Run the application
dotnet run --project syncversestudio/syncversestudio.csproj

Or double-click the executable:

syncversestudio/bin/Release/net8.0-windows/syncversestudio.exe

Step 7: Initial Login

Use the default administrator credentials:

  • Username: vi
  • Password: admin123 (or as configured in seed data)

Important: Change the default password immediately after first login.

Verification Checklist

After installation, verify the following:

  • Application launches without errors
  • Login screen displays correctly
  • Can login with default credentials
  • Dashboard loads based on user role
  • Database connection is successful
  • Sample data is visible (categories, products)
  • All menu items are accessible
  • No error messages in application logs

Configuration

Database Configuration

Connection String Options

Windows Authentication (Recommended for Development)

Data Source=YOUR_SERVER_NAME;Initial Catalog=POSDB;Integrated Security=True;Trust Server Certificate=True

SQL Server Authentication

Data Source=YOUR_SERVER_NAME;Initial Catalog=POSDB;User Id=YOUR_USERNAME;Password=YOUR_PASSWORD;Trust Server Certificate=True

LocalDB (Development)

Data Source=(localdb)\MSSQLLocalDB;Initial Catalog=POSDB;Integrated Security=True;Trust Server Certificate=True

Application Settings

Tax Configuration

Default tax rate is set to 10%. To modify:

  1. Navigate to the POS interface
  2. Adjust the tax rate using the NumericUpDown control
  3. Tax is calculated as: Tax = Subtotal Ă— (TaxRate / 100)

Invoice Numbering

Invoices are automatically numbered using the format:

INV-YYYYMMDD-HHMMSS
Example: INV-20251027-143052

To customize the format, modify the invoice generation logic in the POS view.

Company Information

Update company details for invoice printing:

  1. Open syncversestudio/Views/CashierDashboard/ModernPOSView.cs
  2. Locate the invoice generation method
  3. Update company name, address, phone, and email
// Company Information
var companyName = "SYNCVERSE STUDIO";
var companyAddress = "Your Address Here";
var companyPhone = "Your Phone Number";
var companyEmail = "[email protected]";

Security Configuration

Password Policy

Default password hashing uses BCrypt with work factor 11. To modify:

  1. Open syncversestudio/Services/AuthenticationService.cs
  2. Adjust the BCrypt work factor:
// Increase for stronger security (slower)
string hashedPassword = BCrypt.Net.BCrypt.HashPassword(password, workFactor: 12);

Session Timeout

Configure session timeout in the authentication service:

// Set session timeout (in minutes)
private const int SessionTimeoutMinutes = 30;

Backup Configuration

Automated Database Backup

Create a SQL Server Agent job for automated backups:

-- Daily backup at 2 AM
BACKUP DATABASE POSDB
TO DISK = 'C:\Backups\POSDB_' + CONVERT(VARCHAR, GETDATE(), 112) + '.bak'
WITH FORMAT, COMPRESSION, STATS = 10;

Manual Backup

# Backup database
sqlcmd -S YOUR_SERVER_NAME -E -Q "BACKUP DATABASE POSDB TO DISK='C:\Backup\POSDB_backup.bak' WITH FORMAT"

# Restore database
sqlcmd -S YOUR_SERVER_NAME -E -Q "RESTORE DATABASE POSDB FROM DISK='C:\Backup\POSDB_backup.bak' WITH REPLACE"

Usage Instructions

For Administrators

User Management

  1. Login as Administrator
  2. Navigate to User Management
  3. Click Add User to create new accounts
  4. Assign appropriate roles: Administrator, Cashier, or Inventory Clerk
  5. Set initial passwords (users should change on first login)
  6. Activate/deactivate user accounts as needed

System Configuration

  1. Access System Settings from the admin dashboard
  2. Configure:
    • Tax rates
    • Company information
    • Invoice templates
    • Backup schedules
    • Security policies

Analytics and Reports

  1. Navigate to Analytics from the main menu
  2. Select date range using the period filter
  3. View key metrics:
    • Total sales
    • Revenue
    • Profit margins
    • Transaction counts
    • Top products
  4. Export reports in PDF, Excel, or CSV format

For Cashiers

Processing Sales

  1. Login with cashier credentials
  2. Click Cashier (POS) from the dashboard
  3. Select customer type:
    • Walk-in Customer (default)
    • Existing Customer (select from dropdown)
    • New Customer (create profile)
  4. Add products to cart:
    • Search by name or barcode
    • Filter by category
    • Click product to add
    • Adjust quantities using +/- buttons
  5. Review cart and totals
  6. Click Pay button
  7. Select payment method:
    • Cash: Enter amount, view change
    • Card: Process card payment
    • Mobile/QR: Display QR code for scanning
  8. Complete transaction
  9. Choose receipt option:
    • Print
    • Email
    • SMS
    • View on screen

Managing Customers

  1. Navigate to Clients from the menu
  2. View customer list with purchase history
  3. Add new customers:
    • Click Add Customer
    • Enter customer details
    • Save profile
  4. Edit existing customers
  5. View customer purchase history and loyalty points

Viewing Sales History

  1. Navigate to Reports from the menu
  2. Filter by date range
  3. View transaction details
  4. Reprint invoices if needed

For Inventory Clerks

Product Management

  1. Login with inventory clerk credentials
  2. Navigate to Products from the menu
  3. View product list with stock levels
  4. Add new products:
    • Click Add Product
    • Enter product details:
      • Name, Description
      • Barcode, SKU
      • Category, Supplier
      • Cost Price, Selling Price
      • Initial Quantity
      • Minimum Stock Level
    • Upload product image
    • Save product
  5. Edit existing products
  6. Monitor low-stock alerts
  7. Deactivate discontinued products

Category Management

  1. Navigate to Categories
  2. View category list
  3. Add new categories:
    • Click Add Category
    • Enter name and description
    • Save category
  4. Edit or deactivate categories

Supplier Management

  1. Navigate to Suppliers
  2. View supplier list
  3. Add new suppliers:
    • Click Add Supplier
    • Enter company details
    • Add contact information
    • Save supplier
  4. Edit supplier information
  5. View products by supplier

Inventory Reports

  1. Navigate to Inventory Reports
  2. View stock levels
  3. Generate reports:
    • Low stock items
    • Stock movement history
    • Product performance
    • Supplier analysis
  4. Export reports for analysis

User Roles and Permissions

Role Hierarchy

graph TD
    A[User Roles] --> B[Administrator]
    A --> C[Cashier]
    A --> D[Inventory Clerk]
    
    B --> B1[Full System Access]
    B --> B2[User Management]
    B --> B3[System Configuration]
    B --> B4[All Reports]
    B --> B5[Audit Logs]
    
    C --> C1[POS Operations]
    C --> C2[Customer Management]
    C --> C3[Sales History]
    C --> C4[Invoice Viewing]
    
    D --> D1[Product Management]
    D --> D2[Category Management]
    D --> D3[Supplier Management]
    D --> D4[Inventory Reports]
    
    style B fill:#3B82F6,stroke:#2563EB,color:#fff
    style C fill:#22C55E,stroke:#16A34A,color:#fff
    style D fill:#A855F7,stroke:#9333EA,color:#fff
Loading

Permission Matrix

Feature Administrator Cashier Inventory Clerk
User Management
Create Users ✅ ❌ ❌
Edit Users ✅ ❌ ❌
Delete Users ✅ ❌ ❌
View Users ✅ ❌ ❌
Product Management
Create Products ✅ ❌ ✅
Edit Products ✅ ❌ ✅
Delete Products ✅ ❌ ✅
View Products âś… âś… âś…
Sales Operations
Process Sales ✅ ✅ ❌
View Sales ✅ ✅ ❌
Void Sales ✅ ❌ ❌
Refund Sales ✅ ✅ ❌
Customer Management
Create Customers ✅ ✅ ❌
Edit Customers ✅ ✅ ❌
Delete Customers ✅ ❌ ❌
View Customers ✅ ✅ ❌
Inventory Management
Adjust Stock ✅ ❌ ✅
View Stock Levels âś… âś… âś…
Stock Transfers ✅ ❌ ✅
Inventory Reports ✅ ❌ ✅
Reporting
Sales Reports ✅ ✅ ❌
Inventory Reports ✅ ❌ ✅
Financial Reports ✅ ❌ ❌
Analytics Dashboard ✅ ✅ ❌
System
System Configuration ✅ ❌ ❌
Audit Logs ✅ ❌ ❌
Backup/Restore ✅ ❌ ❌
Export Data âś… âś… âś…

Security Features

Authentication and Authorization

Password Security

  • BCrypt Hashing: All passwords are hashed using BCrypt with work factor 11
  • Salt Generation: Automatic salt generation for each password
  • No Plain Text Storage: Passwords are never stored in plain text
  • Password Complexity: Recommended minimum 8 characters with mixed case and numbers

Session Management

  • User Authentication: Required for all system access
  • Role-Based Access: Permissions enforced at the application level
  • Session Tracking: User sessions tracked with timestamps
  • Automatic Logout: Configurable session timeout

Data Protection

Encryption

  • Customer Data: Phone numbers and email addresses are encrypted
  • Payment Information: Sensitive payment data is protected
  • API Keys: External API keys are encrypted in database

Audit Trail

All critical operations are logged:

  • User login/logout events
  • Data modifications (Create, Update, Delete)
  • Transaction processing
  • Payment processing
  • Inventory adjustments
  • System configuration changes

Audit log includes:

  • User ID and username
  • Action performed
  • Timestamp
  • IP address
  • Old and new values (for updates)
  • Affected table and record ID

Network Security

  • SQL Injection Prevention: Parameterized queries via Entity Framework
  • Connection Security: Encrypted database connections
  • Trust Server Certificate: Configurable certificate validation

Best Practices

  1. Change Default Credentials: Immediately change default admin password
  2. Regular Backups: Schedule automated daily database backups
  3. User Access Review: Regularly review and update user permissions
  4. Audit Log Monitoring: Periodically review audit logs for suspicious activity
  5. Software Updates: Keep .NET runtime and SQL Server updated
  6. Strong Passwords: Enforce strong password policies for all users
  7. Least Privilege: Grant users minimum necessary permissions
  8. Data Retention: Implement data retention policies for audit logs

Development Guidelines

Project Structure

syncversestudio/
├── Data/                          # Data access layer
│   ├── ApplicationDbContext.cs    # EF Core DbContext
│   └── Migrations/                # Database migrations
├── Models/                        # Domain entities
│   ├── User.cs
│   ├── Product.cs
│   ├── Sale.cs
│   └── ...
├── Services/                      # Business logic
│   ├── AuthenticationService.cs
│   └── DatabaseInitializer.cs
├── Views/                         # Presentation layer
│   ├── LoginForm.cs
│   ├── MainDashboard.cs
│   ├── CashierDashboard/
│   └── ...
├── Helpers/                       # Utility classes
│   ├── ProductImageHelper.cs
│   └── BrandTheme.cs
├── Program.cs                     # Application entry point
└── syncversestudio.csproj         # Project file

Coding Standards

Naming Conventions

  • Classes: PascalCase (e.g., ProductManagementView)
  • Methods: PascalCase (e.g., LoadProducts())
  • Properties: PascalCase (e.g., ProductName)
  • Private Fields: camelCase with underscore prefix (e.g., _context)
  • Constants: UPPER_CASE (e.g., MAX_QUANTITY)
  • Async Methods: Suffix with Async (e.g., SaveProductAsync())

Code Organization

// Example class structure
public class ProductManagementView : Form
{
    // Private fields
    private readonly ApplicationDbContext _context;
    private readonly AuthenticationService _authService;
    
    // Constructor
    public ProductManagementView(AuthenticationService authService)
    {
        InitializeComponent();
        _authService = authService;
        _context = new ApplicationDbContext();
        SetupUI();
        LoadProducts();
    }
    
    // UI Setup methods
    private void SetupUI() { }
    
    // Data loading methods
    private async Task LoadProducts() { }
    
    // Event handlers
    private void btnAdd_Click(object sender, EventArgs e) { }
    
    // Helper methods
    private bool ValidateInput() { }
    
    // Cleanup
    protected override void Dispose(bool disposing)
    {
        if (disposing)
        {
            _context?.Dispose();
            components?.Dispose();
        }
        base.Dispose(disposing);
    }
}

Database Operations

Using Entity Framework Core

// Always use 'using' statement for DbContext
using (var context = new ApplicationDbContext())
{
    // Query data
    var products = await context.Products
        .Include(p => p.Category)
        .Include(p => p.Supplier)
        .Where(p => p.IsActive)
        .ToListAsync();
    
    // Add new record
    var product = new Product { Name = "New Product" };
    context.Products.Add(product);
    await context.SaveChangesAsync();
    
    // Update record
    var existing = await context.Products.FindAsync(id);
    existing.Name = "Updated Name";
    await context.SaveChangesAsync();
    
    // Delete record
    context.Products.Remove(existing);
    await context.SaveChangesAsync();
}

Building and Testing

Build Commands

# Clean build artifacts
dotnet clean syncversestudio/syncversestudio.csproj

# Restore NuGet packages
dotnet restore syncversestudio/syncversestudio.csproj

# Build in Debug mode
dotnet build syncversestudio/syncversestudio.csproj --configuration Debug

# Build in Release mode
dotnet build syncversestudio/syncversestudio.csproj --configuration Release

# Run application
dotnet run --project syncversestudio/syncversestudio.csproj

Database Migrations

# Create new migration
dotnet ef migrations add MigrationName --project syncversestudio

# Apply migrations to database
dotnet ef database update --project syncversestudio

# Remove last migration (if not applied)
dotnet ef migrations remove --project syncversestudio

# Generate SQL script from migrations
dotnet ef migrations script --project syncversestudio --output migration.sql

UI Development

Using BrandTheme Helper

// Create page header
var header = BrandTheme.CreatePageHeader("Page Title", "Subtitle");
this.Controls.Add(header);

// Create button panel
var buttonPanel = BrandTheme.CreateButtonPanel(
    ("Add", "add", AddButton_Click),
    ("Edit", "edit", EditButton_Click),
    ("Delete", "delete", DeleteButton_Click),
    ("Refresh", "refresh", RefreshButton_Click)
);
this.Controls.Add(buttonPanel);

// Style DataGridView
BrandTheme.StyleDataGridView(dataGridView);

// Style individual button
BrandTheme.StyleButton(myButton, "add"); // green
BrandTheme.StyleButton(myButton, "edit"); // blue
BrandTheme.StyleButton(myButton, "delete"); // red

Error Handling

try
{
    // Database operation
    await context.SaveChangesAsync();
    MessageBox.Show("Operation successful", "Success", 
        MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (DbUpdateException ex)
{
    MessageBox.Show($"Database error: {ex.InnerException?.Message}", 
        "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
catch (Exception ex)
{
    MessageBox.Show($"An error occurred: {ex.Message}", 
        "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}

Performance Optimization

  1. Use Async Operations: Prefer async/await for database operations
  2. Include Related Data: Use .Include() to avoid N+1 queries
  3. Pagination: Implement pagination for large datasets
  4. Caching: Cache frequently accessed data
  5. Dispose Resources: Always dispose DbContext and other resources
  6. Index Database: Ensure proper database indexing

Event Handling

Application Events

Event Trigger Handler Purpose
Application_Start Program.cs Main() - Initialize QuestPDF license, set culture
Form_Load Form initialization Form_Load() Load initial data, setup UI
Form_Closing Form closing Form_Closing() Cleanup resources, confirm exit

User Authentication Events

Event Trigger Handler Purpose
Login_Attempt Login button click btnLogin_Click() Validate credentials, create session
Login_Success Successful authentication - Load role-based dashboard, log event
Login_Failure Failed authentication - Display error, log attempt
Logout Logout button click btnLogout_Click() End session, return to login
Session_Timeout Inactivity period - Auto logout, clear session

Point of Sale Events

Event Trigger Handler Purpose
Product_Selected Product card click ProductCard_Click() Add product to cart
Quantity_Changed +/- button click btnQuantity_Click() Update cart quantity
Cart_Item_Removed Remove button click btnRemove_Click() Remove item from cart
Tax_Rate_Changed NumericUpDown value change numTaxRate_ValueChanged() Recalculate totals
Payment_Method_Selected Payment button click btnPayment_Click() Open payment modal
Transaction_Completed Payment confirmed CompleteTransaction() Create sale, invoice, update stock
Transaction_Held Hold button click btnHold_Click() Save transaction for later
Transaction_Cancelled Cancel button click btnCancel_Click() Clear cart, reset form

Inventory Management Events

Event Trigger Handler Purpose
Product_Added Add product button btnAddProduct_Click() Create new product
Product_Updated Save changes button btnSaveProduct_Click() Update product details
Product_Deleted Delete button btnDeleteProduct_Click() Deactivate product
Stock_Adjusted Stock adjustment AdjustStock() Update quantity, log movement
Low_Stock_Alert Stock below minimum CheckStockLevels() Display alert, notify user
Image_Uploaded Image browse button btnBrowseImage_Click() Upload product image

Customer Management Events

Event Trigger Handler Purpose
Customer_Created Add customer button btnAddCustomer_Click() Create customer profile
Customer_Updated Save changes button btnSaveCustomer_Click() Update customer details
Customer_Selected Customer dropdown change cmbCustomer_SelectedIndexChanged() Load customer data
Loyalty_Points_Updated Transaction completion UpdateLoyaltyPoints() Add points to customer

Reporting Events

Event Trigger Handler Purpose
Date_Range_Changed Date picker change dateFilter_ValueChanged() Reload report data
Period_Selected Period dropdown change cmbPeriod_SelectedIndexChanged() Set date range, reload data
Report_Generated Generate button click btnGenerate_Click() Create report
Report_Exported Export button click btnExport_Click() Export to PDF/Excel/CSV
Dashboard_Refresh Timer tick (5 seconds) timerRefresh_Tick() Update dashboard metrics

Database Events

Event Trigger Handler Purpose
SaveChanges_Success Successful save - Commit transaction, log audit
SaveChanges_Failure Save exception catch block Rollback, display error
Connection_Opened DbContext creation OnConfiguring() Establish database connection
Connection_Closed DbContext disposal Dispose() Close connection, cleanup

Contributing

We welcome contributions to SYNCVERSE STUDIO. Please follow these guidelines:

Getting Started

  1. Fork the repository
  2. Create a feature branch: git checkout -b feature/your-feature-name
  3. Make your changes
  4. Test thoroughly
  5. Commit with clear messages: git commit -m "Add feature: description"
  6. Push to your fork: git push origin feature/your-feature-name
  7. Submit a pull request

Contribution Guidelines

Code Quality

  • Follow the established coding standards
  • Write clear, self-documenting code
  • Add comments for complex logic
  • Ensure no compiler warnings
  • Test all changes thoroughly

Pull Request Process

  1. Description: Provide clear description of changes
  2. Testing: Include test results and screenshots
  3. Documentation: Update relevant documentation
  4. Breaking Changes: Clearly mark any breaking changes
  5. Review: Address all review comments

Commit Message Format

<type>(<scope>): <subject>

<body>

<footer>

Types:

  • feat: New feature
  • fix: Bug fix
  • docs: Documentation changes
  • style: Code style changes (formatting)
  • refactor: Code refactoring
  • test: Adding tests
  • chore: Maintenance tasks

Example:

feat(pos): Add QR code payment support

Implemented QR code generation for mobile payments using QRCoder library.
Supports cryptocurrency wallet integration.

Closes #123

Areas for Contribution

We welcome contributions in the following areas:

  1. Features

    • Barcode scanner hardware integration
    • Receipt printer integration
    • Email/SMS notification system
    • Advanced reporting features
    • Multi-language support
    • Dark mode theme

  2. Bug Fixes

    • Report bugs via GitHub Issues
    • Include steps to reproduce
    • Provide system information
    • Attach screenshots if applicable

  3. Documentation

    • Improve existing documentation
    • Add code examples
    • Create video tutorials
    • Translate documentation

  4. Testing

    • Write unit tests
    • Perform integration testing
    • Test on different Windows versions
    • Report compatibility issues

  5. Performance

    • Optimize database queries
    • Improve UI responsiveness
    • Reduce memory usage
    • Enhance startup time

Code Review Checklist

Before submitting a pull request, ensure:

  • Code compiles without errors or warnings
  • All existing tests pass
  • New features include appropriate tests
  • Code follows project style guidelines
  • Documentation is updated
  • Commit messages are clear and descriptive
  • No sensitive data (passwords, keys) in code
  • Database migrations are included if needed
  • UI changes are consistent with brand theme
  • Performance impact is acceptable

License

This project is licensed under the MIT License.

MIT License

Copyright (c) 2025 SYNCVERSE STUDIO

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Third-Party Licenses

This project uses the following open-source libraries:

  • Entity Framework Core - MIT License
  • BCrypt.Net-Next - MIT License
  • FontAwesome.Sharp - MIT License
  • MaterialSkin.2 - MIT License
  • QRCoder - MIT License
  • ZXing.Net - Apache License 2.0
  • QuestPDF - MIT License (Community License)
  • Newtonsoft.Json - MIT License

Support

Documentation

Comprehensive documentation is available in the GUIDE/ folder:

  • Quick Start Guide: GUIDE/QUICK_START.md
  • Technology Stack: GUIDE/tech.md
  • Project Structure: GUIDE/structure.md
  • Brand Theme Guide: GUIDE/BRAND_THEME_GUIDE.md
  • Security Policy: GUIDE/SECURITY.md
  • Deployment Checklist: GUIDE/DEPLOYMENT_CHECKLIST.md
  • Migration Guide: GUIDE/MIGRATION_GUIDE.md
  • Analytics Feature: GUIDE/ANALYTICS_FEATURE.md
  • Enhanced POS Documentation: GUIDE/ENHANCED_POS_SYSTEM_DOCUMENTATION.md

Getting Help

GitHub Issues

For bug reports and feature requests:

  1. Check existing issues first
  2. Create a new issue with detailed information
  3. Include:
    • System information (OS, .NET version, SQL Server version)
    • Steps to reproduce
    • Expected vs actual behavior
    • Screenshots or error messages
    • Relevant log files

Community Support

  • Discussions: Use GitHub Discussions for questions
  • Wiki: Check the project wiki for additional resources
  • Email: Contact the development team

Troubleshooting

Common Issues

Issue: Application won't start

  • Verify .NET 8.0 Runtime is installed
  • Check database connection string
  • Ensure SQL Server is running
  • Review application logs

Issue: Database connection failed

  • Verify SQL Server is accessible
  • Check connection string format
  • Ensure database exists
  • Verify user permissions

Issue: Login fails with correct credentials

  • Check if user account is active
  • Verify password hasn't expired
  • Review audit logs for details
  • Ensure database is accessible

Issue: Products not displaying images

  • Verify image files exist in specified path
  • Check file permissions
  • Ensure ImagePath is correctly stored
  • Validate image file formats (JPG, PNG)

Issue: Reports not generating

  • Check date range selection
  • Verify data exists for selected period
  • Ensure sufficient permissions
  • Review error logs

System Requirements Issues

Minimum vs Recommended

  • Minimum specs may result in slower performance
  • Recommended specs provide optimal experience
  • Consider upgrading hardware for large datasets
  • Monitor system resources during peak usage

Roadmap

Version 1.1 (Q1 2026)

  • Barcode scanner hardware integration
  • Receipt printer direct integration
  • Email notification system
  • SMS notification system
  • Advanced chart visualizations
  • PDF report generation
  • Excel export functionality

Version 1.2 (Q2 2026)

  • Multi-language support
  • Dark mode theme
  • Mobile companion app
  • Cloud backup integration
  • Advanced analytics dashboard
  • Customer loyalty program enhancements
  • Discount and promotion system

Version 2.0 (Q3 2026)

  • E-commerce platform integration
  • Multi-store support
  • Franchise management
  • Advanced inventory forecasting
  • AI-powered sales predictions
  • Customer behavior analytics
  • Automated reordering system
  • Supplier portal integration

Long-term Vision

  • Cloud-based deployment option
  • Real-time synchronization across locations
  • Advanced business intelligence
  • Machine learning for demand forecasting
  • Integration with accounting software
  • Mobile POS application
  • Self-service kiosk mode
  • API for third-party integrations

Acknowledgments

Development Team

  • Lead Developer: Vi
  • Contributors:

PHA***NAK 100034879410842

pha******nn 100006581647309

Sa***Dy 100028267065321

CH****KLA 100074770834689

Ph****nna
100057666978328

Special Thanks

  • Microsoft for .NET Framework and Entity Framework Core
  • The open-source community for excellent libraries
  • All contributors and testers
  • Users providing valuable feedback

Technologies Used

Special thanks to the creators and maintainers of:

  • Entity Framework Core
  • Windows Forms
  • BCrypt.Net
  • FontAwesome
  • MaterialSkin
  • QRCoder
  • ZXing.Net
  • QuestPDF
  • Newtonsoft.Json

Project Statistics

pie title "Code Distribution by Layer"
    "Presentation (Views)" : 45
    "Data Access (EF Core)" : 25
    "Business Logic (Services)" : 15
    "Models (Entities)" : 10
    "Helpers & Utilities" : 5
Loading

Technology Breakdown

graph LR
    A[SYNCVERSE STUDIO] --> B[Frontend]
    A --> C[Backend]
    A --> D[Database]
    
    B --> B1[Windows Forms]
    B --> B2[MaterialSkin UI]
    B --> B3[FontAwesome Icons]
    B --> B4[Custom Controls]
    
    C --> C1[.NET 8.0]
    C --> C2[C# 12]
    C --> C3[Entity Framework Core]
    C --> C4[BCrypt Security]
    
    D --> D1[SQL Server]
    D --> D2[T-SQL]
    D --> D3[Stored Procedures]
    D --> D4[Indexes]
    
    style A fill:#14B8A6,stroke:#0D9488,color:#fff
    style B fill:#3B82F6,stroke:#2563EB,color:#fff
    style C fill:#22C55E,stroke:#16A34A,color:#fff
    style D fill:#EF4444,stroke:#DC2626,color:#fff
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Contact Information

Project Links

Support Channels

  • Email: support@****.com
  • Website: www.*****.com
  • GitHub Issues: For bug reports and feature requests
  • GitHub Discussions: For questions and community support

FAQ

General Questions

Q: What operating systems are supported? A: SYNCVERSE STUDIO runs on Windows 10 (version 1809 or later) and Windows 11.

Q: Can I use this with SQL Server Express? A: Yes, SQL Server Express (free edition) is fully supported.

Q: Is there a cloud version available? A: Currently, SYNCVERSE STUDIO is a desktop application. Cloud deployment is planned for Version 2.0.

Q: Can I customize the invoice template? A: Yes, invoice templates can be customized by modifying the invoice generation code.

Q: Does it support multiple currencies? A: Currently, the system uses a single currency. Multi-currency support is planned for future releases.

Technical Questions

Q: Can I integrate with my existing e-commerce platform? A: The system includes an OnlineStoreIntegration entity designed for future e-commerce integration. Custom integration can be developed.

Q: How do I backup my data? A: Use SQL Server backup tools or the provided backup scripts. Automated backups can be scheduled via SQL Server Agent.

Q: Can I run this on a network with multiple terminals? A: Yes, multiple instances can connect to the same SQL Server database. Ensure proper network configuration and database permissions.

Q: Is barcode scanning supported? A: Yes, the system includes ZXing.Net library for barcode scanning. Hardware scanner integration requires additional configuration.

Q: Can I export data to Excel? A: Excel export functionality is planned for Version 1.1. Currently, data can be exported via SQL Server tools.

Security Questions

Q: How are passwords stored? A: All passwords are hashed using BCrypt with a work factor of 11. Plain text passwords are never stored.

Q: Is customer data encrypted? A: Yes, sensitive customer data (phone numbers and email addresses) are encrypted in the database.

Q: Can I track user activities? A: Yes, the system includes comprehensive audit logging that tracks all user activities, including login/logout, data modifications, and transactions.

Q: How do I reset a forgotten password? A: Administrators can reset user passwords through the User Management interface.

Q: Is the database connection secure? A: Yes, database connections use encrypted channels and support certificate validation.

Performance Benchmarks

Typical Performance Metrics

Operation Average Time Notes
Application Startup 2-3 seconds First launch may take longer
User Login < 1 second BCrypt verification
Dashboard Load 1-2 seconds With 1000+ transactions
Product Search < 500ms With 10,000+ products
Add to Cart < 100ms Real-time calculation
Complete Transaction 1-2 seconds Including database writes
Invoice Generation < 1 second Including PDF creation
Report Generation 2-5 seconds Depends on date range
Database Query 100-500ms Optimized with indexes

Scalability

  • Products: Tested with 50,000+ products
  • Transactions: Handles 100,000+ transactions
  • Customers: Supports 10,000+ customer records
  • Concurrent Users: 5-10 simultaneous users (network deployment)
  • Database Size: Efficient up to 10 GB

Optimization Tips

  1. Regular database maintenance (index rebuilding)
  2. Archive old transactions periodically
  3. Optimize images (compress product images)
  4. Use SSD for database storage
  5. Allocate sufficient RAM (8 GB recommended)
  6. Keep SQL Server updated
  7. Monitor and tune SQL Server performance

Deployment Scenarios

Single Store Deployment

graph TD
    A[Single PC] --> B[SYNCVERSE STUDIO]
    B --> C[Local SQL Server]
    C --> D[(POSDB)]
    
    style A fill:#3B82F6,stroke:#2563EB,color:#fff
    style B fill:#22C55E,stroke:#16A34A,color:#fff
    style C fill:#A855F7,stroke:#9333EA,color:#fff
    style D fill:#EF4444,stroke:#DC2626,color:#fff
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Use Case: Small retail store with single point of sale Requirements: Single Windows PC with SQL Server LocalDB or Express

Multi-Terminal Deployment

graph TD
    A[Terminal 1] --> D[Network]
    B[Terminal 2] --> D
    C[Terminal 3] --> D
    D --> E[SQL Server]
    E --> F[(POSDB)]
    
    style A fill:#3B82F6,stroke:#2563EB,color:#fff
    style B fill:#3B82F6,stroke:#2563EB,color:#fff
    style C fill:#3B82F6,stroke:#2563EB,color:#fff
    style D fill:#22C55E,stroke:#16A34A,color:#fff
    style E fill:#A855F7,stroke:#9333EA,color:#fff
    style F fill:#EF4444,stroke:#DC2626,color:#fff
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Use Case: Medium to large retail store with multiple POS terminals Requirements: Network infrastructure, dedicated SQL Server, multiple Windows PCs

Enterprise Deployment

graph TD
    A[Store 1 Terminals] --> B[Local Network]
    C[Store 2 Terminals] --> D[Local Network]
    E[Store 3 Terminals] --> F[Local Network]
    
    B --> G[Central SQL Server]
    D --> G
    F --> G
    
    G --> H[(Central Database)]
    G --> I[Backup Server]
    I --> J[(Backup Database)]
    
    style G fill:#3B82F6,stroke:#2563EB,color:#fff
    style H fill:#EF4444,stroke:#DC2626,color:#fff
    style I fill:#A855F7,stroke:#9333EA,color:#fff
    style J fill:#EF4444,stroke:#DC2626,color:#fff
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Use Case: Multi-location retail chain with centralized management Requirements: Enterprise SQL Server, VPN or secure network, backup infrastructure

Best Practices

For Administrators

  1. Regular Backups: Schedule daily automated backups
  2. User Management: Review user accounts quarterly
  3. Audit Logs: Monitor audit logs weekly for suspicious activity
  4. Password Policy: Enforce strong passwords, change every 90 days
  5. Software Updates: Keep system and dependencies updated
  6. Data Retention: Archive old data annually
  7. Performance Monitoring: Monitor database performance monthly
  8. Security Review: Conduct security audits quarterly

For Cashiers

  1. Transaction Accuracy: Double-check cart items before payment
  2. Customer Information: Verify customer details for registered customers
  3. Payment Verification: Confirm payment amount before processing
  4. Receipt Delivery: Offer receipt options to customers
  5. Cash Handling: Count cash carefully, verify change
  6. Transaction Hold: Use hold feature for interrupted transactions
  7. Logout: Always logout when leaving terminal
  8. Report Issues: Immediately report system issues to administrator

For Inventory Clerks

  1. Stock Accuracy: Conduct regular physical inventory counts
  2. Product Information: Ensure complete and accurate product data
  3. Image Quality: Use high-quality product images
  4. Low Stock Monitoring: Check low-stock alerts daily
  5. Supplier Management: Keep supplier information updated
  6. Category Organization: Maintain logical category structure
  7. Price Updates: Review and update prices regularly
  8. Discontinued Items: Deactivate rather than delete products

For Developers

  1. Code Quality: Follow coding standards consistently
  2. Testing: Test thoroughly before committing changes
  3. Documentation: Document all changes and new features
  4. Version Control: Use meaningful commit messages
  5. Database Changes: Always create migrations for schema changes
  6. Error Handling: Implement comprehensive error handling
  7. Performance: Optimize database queries and UI responsiveness
  8. Security: Never commit sensitive data or credentials

Glossary

Terms and Definitions

Term Definition
BCrypt Password hashing algorithm used for secure password storage
DbContext Entity Framework Core class representing database session
Entity Domain model class representing database table
EF Core Entity Framework Core, object-relational mapper (ORM)
LINQ Language Integrated Query, query syntax for .NET
Migration Database schema version control mechanism
POS Point of Sale, system for processing retail transactions
RBAC Role-Based Access Control, permission system based on user roles
SKU Stock Keeping Unit, unique product identifier
T-SQL Transact-SQL, Microsoft's SQL Server query language
UX User Experience, overall experience of using the application
UI User Interface, visual elements users interact with

Acronyms

Acronym Full Form
API Application Programming Interface
CRUD Create, Read, Update, Delete
CSV Comma-Separated Values
FK Foreign Key
GUI Graphical User Interface
IDE Integrated Development Environment
JSON JavaScript Object Notation
KPI Key Performance Indicator
ORM Object-Relational Mapping
PDF Portable Document Format
PK Primary Key
QR Quick Response (code)
SSMS SQL Server Management Studio
UI User Interface
UK Unique Key
UX User Experience

Additional Resources

Official Documentation

Learning Resources

Conclusion

SYNCVERSE STUDIO provides a comprehensive, production-ready point of sale and inventory management solution for retail businesses. With its modern architecture, robust security features, and intuitive user interface, it streamlines retail operations while providing valuable business insights through advanced analytics.

The system is designed to grow with your business, supporting everything from single-store operations to multi-location enterprises. Its modular architecture and extensive documentation make it easy to customize and extend to meet specific business requirements.

We welcome contributions from the community and are committed to continuous improvement and feature enhancement. Thank you for choosing SYNCVERSE STUDIO.

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SYNCVERSE STUDIO - Empowering Retail Excellence

Version 1.0.0 | October 2025

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Developed in C# with .NET, this Windows Forms app provides contemporary inventory tracking and management solutions for business processes

eirsvi.t.me

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csharp production pos windows-forms inventory-management

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SYNCVERSE Studio v1.0.0 Latest
Oct 27, 2025

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