capture runtime errors, how?

[m.path]

hi everybody!

i'm developing a vb app that is distributed on a product cd that is given to all customers of a very big company. that's why this app should be safe enough that it works on all well and not-well working systems of all that customers.

'till today we've tested the app on many computers and got most different errors from automation errors (by the way: what's that???), errors that a control (mediaplayer) used in the main form does not exist on the target system and so on...

my Q: how can i protect my application (actually it's an intro that plays an mpeg and then starts the html product pages) by capturing occuring run time errors and continuing with starting the browser for the html product pages in this case?



thank you VERY much for your help!!!


matthias path

You can use Error Handling.

'This statement will ignore the error and continue execution of the program
On Error Resume Next

'This statement will goto ERRH when an Error occurs. Form there, you can handle it however you want.
On Error Goto ERRH

'<--Code Here-->

Exit Sub

ERRH:
'Handle the Error here

[ttingen]

I was going to reply with the same thing you posted, Megatron, but it almost seemed too obvious.

m.path,

If you know the error codes you can handle them anyway you want to in the error handler.

On Error Goto ErrHandler

ErrHandler:
   If Err.Number = <YOUR RUN TIME ERROR> Then
        'do whatever you want
   Else
        'do whatever
   End if

you can record the errors like this

Private Sub Command1_Click()
    On Error GoTo DoStuff

    'code code code

    Exit Sub

DoStuff:
    Dim FF As Integer
    FF = FreeFile
    Open "c:\errlog.txt" For Append As FF
        Print #FF, "The Error " & Err.Number & "  " & Err.Description
    Close FF
End Sub

[steve65]

For a new person starting out. What is the best way of trying to determine all the possible errors that could occur? Just handle each error as it is made know to you by testing or an end user or include all possible errors known to the vb world. If it is the later is there a listing of the most common errors and typical ways of handling them?

Thanks

[ttingen]

Steve65,

About the only way is trial and error.

Run time error lists in MSDN:
http://msdn.microsoft.com/library/de...ableerrors.htm

[steve65]

Thanks