Doesn't fire when calling a sub method by a event

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Dears,
I want to execute the sub method: TESTSub() when the Activated event of Form1 was triggered. But I found the line 'call TESTSub()' is not being executed.

Private Sub Form1_Activated(sender As Object, e As EventArgs) Handles MyBase.Activated
...
call TESTSub()
....
End sub

Private TESTSub()
...
End sub

What I have tried:

I used debug with step by step to check it, it just went through this line, but didn't execute the sub method. But in other events which can call the sub method. What is the problem? Thanks.

Posted 7-Jan-22 20:49pm

Hu Christian

Updated 7-Jan-22 21:20pm

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OriginalGriff · Accepted Answer · 2022-01-07T21:20:00

We can't tell - we can't run that code at all, so we can't tell what is happening - and you need the debugger to work out what might be going on. Remember that there are two "step" operations in most debuggers: "step into" and "step over" - if you use the later then it will appear not to enter called methods.

So put a breakpoint on the line before the call, another on the line after the call, a third at the start of TESTSub, and a fourth at the end.

Then use the debugger to find out how many of them get hit. Best guess is something is throwing an exception which you are catching elsewhere but with just that fragment of code there is no way we can tell at all!