How Do I create Windows Form file in VS and add the form to my VS project?

Question

C#, How Do I create Windows Form file in VS and add the form file to my VS project by using C# code?
I like to create a Windows Form file into my VS Win Form project by using C#. I have the path and the file name.
I need a Win Form with FileName.cs, FileName.Designer.cs, FileName.resx, and FileName (as you see it VS by adding a Win Form manually by using VS)
Rune Brattas

Answer 1

You cannot create a Form from code at run time. 
For one thing, the user running your application will, almost certainly, not have  a copy of Visual Studio to hand with which to build anything.  (Not that you actually need 'Studio at all; Notepad and csc.exe are all you actually
need), but that's another story).
You can do this with an awful lot of pain, using the innards of the compiler from iside your own program, compiling the new Form's source code on the fly and then executing the resulting assembly within your application.  IMHO, that's a simply terrifying
prospect especially as the code you will be compiling will be on someone else's machine and over which you will have absolutely no control.  If you're lucky, they'll spell something wrong and it won't compile.
The "usual" way to do this sort of thing is to create additional, "plug-in" forms as library assemblies and have your program load and execute these at run-time. 
Regards, Phill W.