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itaykaldi's avatar
itaykaldi
Contributor
12 years ago
Solved

handle run time error

hey, i created keyword test, in the keyword test i call to some script with try and catch. the script throw exception, but the keyword script doens't handle it. the test stop and show run tim...
vgangavarapu198's avatar
vgangavarapu198
Occasional Contributor
10 years ago
Hi Ravi,

Is it possible to use "On Error Resume Next " for 10 times within the same function...
Is there any other alternative for On Error... in VA Script...
The reason why I am asking you is , I have function with 10 lines of code . I need to check on each line of code if it has error or not...

Please help ...
Colin_McCrae's avatar
Colin_McCrae
Community Hero
10 years ago

In VBScript, think of it as a switch.

 

"On Error Resume Next" - switches error handling off. If something fails once set, it will just keep going.

 

With it switched off, error codes will still be captured. You can check the value of "Err.Number" - the code should indicate the naurture of the error, but you need to handle it with your own code when running this way. (List of error codes: http://ss64.com/vb/syntax-errors.html )

 

"On Error Goto 0" - switches it back on.

 

If you switch error handling off, you need to make sure your code is robust and/or you include your own error handling. If you just let it plough merrily on no matter what, without doing any sort of validation or error handling yourself, you can produce some very stange results ....

  • vgangavarapu198's avatar
    vgangavarapu198
    Occasional Contributor
    10 years ago

    Thank you for the explaination about On Error...

     

    If i have the situation like below.

     

    Function ()

      Code Line 1

      Code Line 2

      Code Line 3

      Code Line 4

      Code Line 5

      Code Line 6

    End Function

     

    I am expecting run time errors in all lines. Do I need to write On Error before each line ?

    • Colin_McCrae's avatar
      Colin_McCrae
      Community Hero
      10 years ago

      No.

       

      But I have no idea what you're trying to do.

       

      Changing it to:

       

      Function ()

  On Error Resume Next

  Code Line 1

  Code Line 2

  Code Line 3

  Code Line 4

  Code Line 5

  Code Line 6

  On Error Goto 0

End Function

       

      Will cause it to run over all those lines and keep going - regardless of any errors.

       

      But I'm not sure what good this is doing you? Why are you expecting errors? If you are expecting them, what are you trying to do with them. If you want to handle them in any sort of meaningful way, you'll need to do a lot more than this!

       

      If every line from 1 to 6 all caused an error, the error number will be updated each time a new error happens. So at the end of the six lines, all you will have is the error code for the last one and a load of code that doesn't work, but keeps going.

       

      All it seems like you're doing is forcing it to keep working over bad code. I have no idea why ....

      • vgangavarapu198's avatar
        vgangavarapu198
        Occasional Contributor
        10 years ago

        All I am expecting is , Is there anything for "Run time errors" to trigger automatically like On Log Error Event