/win32res (C# Compiler Options)
The /win32res option inserts a Win32 resource in the output file.
The resource file that you want to add to your output file.
A Win32 resource file can be created with the Resource Compiler. The Resource Compiler is invoked when you compile a Visual C++ program; a .res file is created from the .rc file.
A Win32 resource can contain version or bitmap (icon) information that would help identify your application in the File Explorer. If you do not specify /win32res, the compiler will generate version information based on the assembly version.
To set this compiler option in the Visual Studio development environment
Open the project's Properties page.
Click the Application property page.
Click on the Resource File button and choose a file by using the combo box.
Compile in.cs and attach a Win32 resource file rf.res to produce in.exe:
csc /win32res:rf.res in.cs