How to Compile the C-sharp programs through normal command prompt (cmd.exe) other than visual studio command prompt?

First of all open run window and type cmd and then press 'enter' or click 'ok' button. Then go to the folder or make a folder where you want to create and compile .cs file (C-Sharp source code).
For example:-
c:\Users\Administrator>d:
d:\>md C#Folder
d:\>cd C#Folder
d:\C#Folder>


Now create a batch file with the name CSCompiler.bat by writing the any one of the following commands
d:\C#Folder>copy con CSCompiler.bat
                    or
d:\C#Folder>edit CSCompiler.bat
and write the following code in it ----------------------

@echo off
if "%1" == "" goto x86
if not "%2" == "" goto usage

if /i %1 == x86       goto x86
if /i %1 == amd64     goto amd64
if /i %1 == x64       goto amd64
if /i %1 == ia64      goto ia64
if /i %1 == x86_amd64 goto x86_amd64
if /i %1 == x86_ia64  goto x86_ia64
goto usage

:x86
if not exist "C:\Program Files\Microsoft Visual Studio 10.0\VC\bin\vcvars32.bat" goto missing
call "C:\Program Files\Microsoft Visual Studio 10.0\VC\bin\vcvars32.bat"
cls
goto :eof

:amd64
if not exist "C:\Program Files\Microsoft Visual Studio 10.0\VC\bin\amd64\vcvars64.bat" goto missing
call "C:\Program Files\Microsoft Visual Studio 10.0\VC\bin\amd64\vcvars64.bat"
cls
goto :eof

:ia64
if not exist "C:\Program Files\Microsoft Visual Studio 10.0\VC\bin\ia64\vcvars64.bat" goto missing
call "C:\Program Files\Microsoft Visual Studio 10.0\VC\bin\ia64\vcvars64.bat"
cls
goto :eof

:x86_amd64
if not exist "C:\Program Files\Microsoft Visual Studio 10.0\VC\bin\x86_amd64\vcvarsx86_amd64.bat" goto missing
call "C:\Program Files\Microsoft Visual Studio 10.0\VC\bin\x86_amd64\vcvarsx86_amd64.bat"
cls
goto :eof

:x86_ia64
if not exist "C:\Program Files\Microsoft Visual Studio 10.0\VC\bin\x86_ia64\vcvarsx86_ia64.bat" goto missing
call "C:\Program Files\Microsoft Visual Studio 10.0\VC\bin\x86_ia64\vcvarsx86_ia64.bat"
cls
goto :eof

:usage
echo Error in script usage. The correct usage is:
echo     %0 [option]
echo where [option] is: x86 ^| ia64 ^| amd64 ^| x86_amd64 ^| x86_ia64
echo:
echo For example:
echo     %0 x86_ia64
goto :eof

:missing
echo The specified configuration type is missing.  The tools for the
echo configuration might not be installed.
goto :eof

------------------------ and save it.
Now run that bat file
d:\C#Folder>CSCompiler

And then you can create and compile your .cs file any where.