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Visual Basic (Microsoft) Versions 5/6 FAQ

Error Trapping

How can I trap errors and write them to a log file? by Michael42
Posted: 13 Feb 03

Global Variable:
mNL$ = Chr$(13) & Chr$(10)


Sub mySub1()
   On Error Goto err_mySub1
   'Your Code for current sub or function

    Exit Sub


err_mySub1:
    Screen.MousePointer = DEFAULT
    sLogError Error, Err
    
    Select Case Err
        Case 3021 'No Current Record
            Resume Next
        Case Else
            mRetVal% = MsgBox("SubName999" & mNL & mNL & Error & mNL$ & mNL$ & "Error number: " & Str$(Err), MB_ICONINFORMATION, "Internal Error")
            Resume Next
    End Select
    Return


Sub sLogError (pErrMsg As String, pErrNumber As Long)
   On Error Resume Next
   
   'Write Error To Error Log
   Dim mLogFile As Integer
   mLogFile% = FreeFile
   Open app.Path & "\Error.log" For Append As #mLogFile%
   Print #mLogFile%, "<<<<<<<<<< " & Date$ & " - " & Time$ & " >>>>>>>>>>" & mNL
   Print #mLogFile%, pErrMsg$ & mNL$ & mNL$ & "Error number: " & Str$(pErrNumber)
   Close #mLogFile%

End Sub

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