From the Visual Studio menu select File | New | Project. In the left panel of the New Project dialog, select Visual C# | Windows, and in the right panel select Windows Application. Name the new project and solution. Browse to (or create) a folder to contain it, and click OK.
Visual Studio will build a directory structure for your new solution and project, will create Form1.cs, Form1.Designer.cs and Form1.resx in the project folder, and will display Form1.cs in design view.

Create a project