RFC Generator Web Application A complete ASP.NET MVC web application that generates Mexican RFC (Registro Federal de Contribuyentes) codes according to official SAT specifications. Features Core Functionality

RFC Generation: Automatically generates RFC codes based on user's personal information following official Mexican tax authority rules CRUD Operations: Complete Create, Read, Update, Delete functionality for RFC records Database Management: Full database integration with SQL Server and stored procedures Search Functionality: Advanced search across names, dates, and RFC codes with partial matching Duplicate Detection: Visual highlighting of duplicate RFC entries in red text

RFC Generation Rules Implementation The application implements all official RFC generation rules including:

Basic Structure: First 4 letters from surnames and name + 6-digit birth date (YYMMDD) Special Character Handling: Automatic replacement of Ñ characters with "X" Compound Names: Proper handling of names like "MARIA LUISA" or "JOSE CARLOS" Compound Surnames: Uses only the first word of multi-word surnames Missing Data: Assigns "X" for missing apellido materno or missing vowels Inappropriate Words: Filters and replaces offensive 4-letter combinations with "X" Complete Exception Handling: Implements all edge cases per SAT specifications

User Interface

Clean Bootstrap Design: Responsive web interface using Bootstrap framework Multi-page Workflow: Separate views for generation, editing, deletion, and database browsing Form Validation: Client and server-side validation for required fields Success/Error Messages: User feedback for all operations using TempData Confirmation Dialogs: Safe deletion with confirmation screens

Technical Architecture

3-Layer Architecture: Presentation (MVC), Business Logic, Data Access separation Entity Framework: Structured data models with Ent_Rfc entity Stored Procedures: Database operations through SQL Server stored procedures Exception Handling: Comprehensive error handling throughout the application MVC Pattern: Clean separation of concerns following ASP.NET MVC best practices

Technology Stack

Framework: ASP.NET MVC 5 Language: C# Database: SQL Server Frontend: HTML5, CSS3, Bootstrap Data Access: ADO.NET with SqlConnection Architecture: 3-Layer (Presentation, Business, Data)

Note: This application is for educational purposes and generates RFC codes according to publicly available specifications. For official RFC registration, consult the Mexican Tax Authority (SAT).