。NET执行BAT，DLL

Process.Start(@"D:\Root\***\***\bin\Debug\***.bat");
Process.Start("cmd.exe","/c  regsvr32  "+path) 
***.bat内容：

regsvr32 /s/u %windir%\system32\***.dll
del ***.dll %windir%\system32\***.dll
copy jmail.dll %windir%\system32
regsvr32 /s %windir%\system32\***.dll