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[C#] Process.start ends with exit code 2


Problem


When I execute an external program with Process.start, it does not work as expected and exits with exit code 2 (no exceptions).


Cause


I passed the path of the executable file as a command line argument, but there was a space in the path. The command line argument is regarded as another argument after the blank.



solution


Command line arguments are not separated by spaces when enclosed in "". You need to prefix "" to make "a string.

System.Diagnostics.ProcessStartInfo psi =
    new System.Diagnostics.ProcessStartInfo();

psi.FileName = "python.exe";
psi.Arguments = @"""C:\my folder\test.py"""; //here

System.Diagnostics.Process.Start(psi);


Lastly


I was addicted to such a mediocre mistake ...

When I name the folder myself, I can't put a space, but the installation destination of visual studio has a space.

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