Create README.md file

Create README.md file

README.md

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+# C# - ASP.NET .NET Core MVC - Simple CRUD Example Application with Repository and Unit of Work Pattern. [Year of Development: 2019 and 2020]
+
+About the application technologies and operation:
+
+### Technologies:
+- Programming Language: C#
+- FrontEnd Side: ASP.NET MVC - .NET Core 2.2
+- BackEnd Side: .NET Core 2.2
+- Descriptive Language: HTML5
+- Style Description Language: CSS (Bootstrap 4.3.1)
+- Database: SQLite In Memory Provider (Code First Database Migration)
+- Other used modul:
+    - ASP.NET Identity Core
+    - SQLite In Memory Provider
+
+### Application solution structure:
+- **SimpleCRUDExample**: 
+    - Includes the FrontEnd Side of the application.
+    - Includes IoC DI Registers, with separate configuration files.
+    - Includes Middlewares.
+- **Data.DataAccessLayer**:
+    - Includes the Database Context.
+    - Includes the Database Entities.
+- **Core.ApplicationCore**:
+    - Includes classes and interfaces required for Generic Repository Pattern.
+    - Includes classes and interfaces required for Unity of Work.
+    - Includes classes and interfaces required for BackEndException Handler.
+- **Core.Common**:
+    - Includes the DTOs used for the application.
+- **Business.Engine**:
+    - Includes the necessary classes and interfaces to implement Business Logic.
+    - Each Controller has it's own BL interface and class.
+
+### Installation/ Configuration:
+
+1. Restore necessary Packages on the selected project, run the following command in **PM Console**
+
+   ```
+   Update-Package -reinstall
+   ```
+     
+### About the application:
+
+The purpose of the web application is to list, create, modify an d delete Formula One Teams. The creation, modification and deletion are only possible after login!
+
+The Formula One team as an entity, has the following characteristics: Name, Year of Establishment, Number of World Championships Won and Have you paid the entry fee.
+
+#### The application shows the following:
+- How to implement **Generic Repository Pattern**.
+- How to implement **Generic Unit of Work Pattern**.
+- How to use **IoC Container** in **ASP.NET Core**.
+- How to implement **Middlewares** in **ASP.NET Core**.
+- How to separate **IoC Container Configurations** in **ASP.NET Core**.
+- How to implement and register and using **AutoMapper** in **ASP.NET Core**.