This article describes the types of files in C# and Visual Basic.NET projects.

C# application consists of the following files:

• .cs - Source code C# files (classes, Windows forms, user controls etc)
• .Designer.cs - Auto-generated C# files (written by Visual Studio Forms Designer to implement actions performed by dragging/dropping controls)
• .xsd - XML files for DataSet classes generation
• .csproj - C# project files
• .csproj.vspscc - Version control file for C# projects