@echo off
set E=%~n0.exe
set X=if exist
%X% %E% call:t %~n0.cs %E%
%X% %E% goto x
set D=C:\Windows\Microsoft.NET\Framework
set B=\csc.exe
set A=%D%64\
call:f
%X% %C% goto co
set A=%D%\
call:f
%X% %C% goto co
echo .NET Frameworkが必要です
goto x
:t
if "%~t1" gtr "%~t2" del %2
goto r
:f
set C=%A%v4.0.30319%B%
%X% %C% goto r
set C=%A%v3.5%B%
%X% %C% goto r
set C=%A%v2.0.50727%B%
:r
exit/b 0
:co
echo %C% %~n0.cs
%C% /nologo /target:winexe %~n0.cs
:x
%X% %E% start %E% %*