@REM By unknown @echo off color 0A %~d1 cd %~p1 set _source_= set _dll_= :LOOP if "%1" == "" goto COMPILE if /i "%~x1"==".cs" goto SOURCE if /i "%~x1"==".dll" goto DLL goto SFT :SOURCE if "%_source_%"=="" goto S2 :S1 set _source_=%_source_% %~nx1 goto SFT :S2 set _source_=%~nx1 goto SFT :DLL if "%_dll_%"=="" goto D2 :D1 set _dll_=%_dll_%,%~nx1 goto SFT :D2 set _dll_=%~nx1 goto SFT :SFT shift goto LOOP :COMPILE set _compilerdir_=%WinDir%\MicroSoft.NET\Framework\v2.0.50727set _compiler_=%_compilerdir_%csc.exe /unsafe if "%_dll_%"=="" goto C2 :C1 %_compiler_% /r:%_dll_% %_source_% goto RESULT%errorlevel% :C2 %_compiler_% %_source_% goto RESULT%errorlevel% :RESULT1 echo ------------------------------------------- echo compileing %_source_% is failed! echo ------------------------------------------- pause goto END :END usage: directly drag a single of filename.cs on its merits; automatically renewable make-up filename.exe or filename.exe dll.only just to add " /t:library" after,drag the filename.exe on visual studio.net 200x Command Prompt.you will see the result.