Question

System.Diagnostics.Process proc0 = new System.Diagnostics.Process(); proc0.StartInfo.FileName = 'cmd'; proc0.StartInfo.WorkingDirectory = Path.Combine(curpath, 'snd'); proc0.StartInfo.Arguments = omgwut; 

And now for some background…

string curpath = System.IO.Path.GetDirectoryName(Application.ExecutablePath); 

omgwut is something like this:

copy /b a.wav + b.wav + … + y.wav + z.wav output.wav

And nothing happens at all. So obviously something’s wrong. I also tried ‘copy’ as the executable, but that doesn’t work.

Answer 1

Try the prefixing your arguments to cmd with /C, effectively saying cmd /C copy /b t.wav ...

According to cmd.exe /? using

/C <command>

Carries out the command specified by string and then terminates

For your code, it might look something like

// ..  proc0.StartInfo.Arguments = '/C ' + omgwut; 

Notes:

• A good way to test whether your command is going to work is to actually try it from a command prompt. If you try to do cmd.exe copy ... you’ll see that the copy doesn’t occur.
• There are limits to the length of the arguments you can pass as arguments. From MSDN: ‘The maximum string length is 2,003 characters in .NET Framework applications and 488 characters in .NET Compact Framework applications.’
• You can bypass the shelling out to command by using the System.IO classes to open the files and manually concatenate them.