Building A True Error Handler
- by Kevin Pirnie
I am trying to build an error handler for my desktop application. The code Is in the class ZipCM.ErrorManager listed below.
What I am finding is that the outputted file is not giving me the correct info for the StackTrace.
Here is how I am trying to use it:
Try
'... Some stuff here!
Catch ex As Exception
Dim objErr As New ZipCM.ErrorManager
objErr.Except = ex
objErr.Stack = New System.Diagnostics.StackTrace(True)
objErr.Location = "Form: SelectSite (btn_SelectSite_Click)"
objErr.ParseError()
objErr = Nothing
End Try
Here is the class:
Imports System.IO
Namespace ZipCM
Public Class ErrorManager
Public Except As Exception
Public Location As String
Public Stack As System.Diagnostics.StackTrace
Public Sub ParseError()
Dim objFile As New StreamWriter(Common.BasePath & "error_" & FormatDateTime(DateTime.Today, DateFormat.ShortDate).ToString().Replace("\", "").Replace("/", "") & ".log", True)
With objFile
.WriteLine("-------------------------------------------------")
.WriteLine("-------------------------------------------------")
.WriteLine("An Error Occured At: " & DateTime.Now)
.WriteLine("-------------------------------------------------")
.WriteLine("LOCATION:")
.WriteLine(Location)
.WriteLine("-------------------------------------------------")
.WriteLine("FILENAME:")
.WriteLine(Stack.GetFrame(0).GetFileName())
.WriteLine("-------------------------------------------------")
.WriteLine("LINE NUMBER:")
.WriteLine(Stack.GetFrame(0).GetFileLineNumber())
.WriteLine("-------------------------------------------------")
.WriteLine("SOURCE:")
.WriteLine(Except.Source)
.WriteLine("-------------------------------------------------")
.WriteLine("MESSAGE:")
.WriteLine(Except.Message)
.WriteLine("-------------------------------------------------")
.WriteLine("DATA:")
.WriteLine(Except.Data.ToString())
End With
objFile.Close()
objFile = Nothing
End Sub
End Class
End Namespace
What is happenning is the .GetFileLineNumber() is getting the line number from 'objErr.Stack = New System.Diagnostics.StackTrace(True)' inside my Try..Catch block. In fact, it's the exact line number that is on.
Any thoughts of what is going on here, and how I can catch the real line number the error is occuring on?
