Run python script in VB.net on button click

Question

I want to run a Python script in cmd when a button is clicked in VB.Net. Do you need to call the Python script in a batch file? Or can you do it directly in VB?

I tried this

Dim ps As New ProcessStartInfo("cmd.exe")
    ps.Arguments = "C:\yourbatfile.bat"
    Process.Start(ps)

But that only opens the cmd window and doesn't execute the bat file.

I think the argument you sent is incorrect (usually you'd suffix it with /c or /k when running cmd), but why open cmd when you can just execute the batch file immediately? Process.Start("C:\yourbatfile.bat") — Visual Vincent
– Visual Vincent, Commented Aug 8, 2016 at 10:01

Laurel · Accepted Answer · 2016-08-09 01:00:44Z

2

Dim psi = New ProcessStartInfo("c:\python27\python.exe", "myPythonScript.py")
Dim proc = Process.Start(psi)
proc.WaitForExit()
If proc.ExitCode <> 0 then throw new Exception(" Script Failed")

edited Aug 9, 2016 at 1:00

Laurel

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answered Aug 8, 2016 at 10:03

FloatingKiwi

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2 Comments

Alley Way Over a year ago

I get this error with that code: 'System.Diagnostics.Assert' is not accessible in this context because it is 'Friend'.

FloatingKiwi Over a year ago

That was just to show you how to test the exit code to see if errors had occurred. I've changed it to throw an exception now.

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