Описание тега resgen
ResGen.Exe
ResGen (Resource File Generator) is a .NET Framework Tools. It is installed with Visual Studio. It can normally be found in "C:\Program Files\Microsoft SDKs\Windows\v7.0A\bin\ResGen.exe".
Resgen is used in the command prompt. It is also possible to use it in code with: Process.Start() (C#)
Resgen.exe can performs the following conversions:
Converts .txt files to.resources or.resx files.
Converts .resources files to text or.resx files.
Converts .resx files to text or.resources files.
A.resx file created by the ResXResourceWriter class cannot be used directly by a.NET Framework application. Before adding this file to your application, run it through Resgen.exe to convert it to a.resources file. In order for Resgen.exe to be able to parse your input, it is critical that your.txt and.resx files follow the correct format.