Hi friend u can create an exe file by using any one of the following methods.Try it and send me the reply.

Method 1:
The /target:exe option causes the compiler to create an executable (EXE), console application.
Each of the following command lines will compile in.cs, creating in.exe:

csc /target:exe in.cs
csc in.cs

Method 2:
The /target:winexe option causes the compiler to create an executable (EXE), Windows program.

Compile in.cs into a Windows program:

csc /target:winexe in.cs