This is preaty handy for catching page errors and writing them down in log file which is automaticaly deleted if he reaches defined file size.
Imports
System.IO
Public Shared Sub PageErr(ByVal ErrorMessage As String, ByVal UserIPAddress As String, _
ByVal URLRefferer As String, ByVal PathToLogFile As String, _ByVal FileMaxSize As Integer, ByVal FileName As String)
Dim fileExists As Boolean = My.Computer.FileSystem.FileExists(PathToLogFile & FileName)
If fileExists = False Then
TryMy.Computer.FileSystem.WriteAllText(PathToLogFile & FileName, "File created: " & DateTime.Now.ToString, False)
My.Computer.FileSystem.WriteAllText(PathToLogFile & FileName, _vbCrLf & vbCrLf & "/**************************** " & DateTime.Now.ToString & " ********************************/" & _
vbCrLf &
"Error level: Page level" & _vbCrLf & "Error message: " & ErrorMessage & _
vbCrLf &
"URL refferer: " & URLRefferer & _vbCrLf & "Users' IP: " & UserIPAddress, True)
Catch ex As Exception
End Try
ElseDim fileSize As Long = My.Computer.FileSystem.GetFileInfo(PathToLogFile & FileName).Length()
If fileSize >= FileMaxSize Then
TryMy.Computer.FileSystem.DeleteFile(PathToLogFile & FileName, FileIO.UIOption.OnlyErrorDialogs, FileIO.RecycleOption.DeletePermanently)
My.Computer.FileSystem.WriteAllText(PathToLogFile & FileName, "File created: " & DateTime.Now.ToString, False)My.Computer.FileSystem.WriteAllText(PathToLogFile & FileName, _
vbCrLf & vbCrLf &
"/**************************** " & DateTime.Now.ToString & " ********************************/" & _vbCrLf & "Error level: Page level" & _
vbCrLf &
"Error message: " & ErrorMessage & _vbCrLf & "URL refferer: " & URLRefferer & _
vbCrLf &
"Users' IP: " & UserIPAddress, True)Catch ex As Exception
End Try
ElseMy.Computer.FileSystem.WriteAllText(PathToLogFile & FileName, _
vbCrLf & vbCrLf &
"/**************************** " & DateTime.Now.ToString & " ********************************/" & _vbCrLf & "Error level: Page level" & _
vbCrLf &
"Error message: " & ErrorMessage & _vbCrLf & "URL refferer: " & URLRefferer & _
vbCrLf &
"Users' IP: " & UserIPAddress, True)
End If
End If
End Sub
Just pass the aguments and make sure that aspnet user has apropriate read write permissions over the folder where you are going to store the log file
Hope it helps