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I have created a script using Python2.7 and compiled it using pyinstaller into an exe of the same name, in this case "GeneralStats.py" turns into "GeneralStats.exe" using --onefile and -w arguments.

When called with C# I use:

var pythonDirectory = (Directory.GetCurrentDirectory());
var filePathExe1 = Path.Combine(pythonDirectory + "\\Python\\GeneralStats.exe");
Process.Start(filePathExe1);

When called outside of C#, so in my local files I can run the .exe and the result is a text file with lots of values in (Running correctly).

However, when ran with C# in this format, I get an error that "GeneralStats returned -1!"

Which I have had issues with before, but it was a simple python error that when I returned to my code and ran it, I would receive an error that I overlooked. This time my python code returns no errors and works outside of C#.

Any ideas of why this could be? I can provide any code or file directories necessary, please just ask if you feel it would help with debugging.

EDIT:

Solved by removing:

var filePathExe1 = Path.Combine(pythonDirectory + "\\Python\\GeneralStats.exe");
Process.Start(filePathExe1);

And replacing with:

ProcessStartInfo _processStartInfo = new ProcessStartInfo();
_processStartInfo.WorkingDirectory = Path.Combine(pythonDirectory + "\\Python");
_processStartInfo.FileName = @"GeneralStats.exe";
_processStartInfo.CreateNoWindow = true;
Process myProcess = Process.Start(_processStartInfo);
Annika Zero
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1 Answers1

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You need to set the working directory for the Process - it is probably trying to load files from its working directory but isn't finding them.

See, e.g. this:

Use the ProcessStartInfo.WorkingDirectory property to set it prior to starting the process. If the property is not set, the default working directory is %SYSTEMROOT%\system32.

Set it to the path where GeneralStats.exe is.

Wai Ha Lee
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