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Posted 20 Aug 2004

User Friendly ASP.NET Exception Handling

, 20 Dec 2004
A flexible framework for user-friendly ASP.NET exception handling, and automatically notifying developers of problems before users do.
Imports System.Web

''' <summary>
''' Implements ASP unhandled exception manager as a HttpModule
''' </summary>
''' <remarks>
''' to use:
'''    1) place ASPUnhandledException.dll in the \bin folder
'''    2) add this section to your Web.config under the &lt;system.web&gt; element:
'''         &lt;httpModules&gt;
'''	 	        &lt;add name="ASPUnhandledException" 
'''                 type="ASPUnhandledException.UehHttpModule, ASPUnhandledException" /&gt;
'''		    &lt;/httpModules&gt;
'''  Jeff Atwood
''' </remarks>
Public Class UehHttpModule
    Implements IHttpModule

    Public Sub Init(ByVal Application As System.Web.HttpApplication) Implements System.Web.IHttpModule.Init
        AddHandler Application.Error, AddressOf OnError
    End Sub

    Public Sub Dispose() Implements System.Web.IHttpModule.Dispose
    End Sub

    Protected Overridable Sub OnError(ByVal sender As Object, ByVal args As EventArgs)
        Dim app As HttpApplication = CType(sender, HttpApplication)
        Dim ueh As New Handler
    End Sub
End Class

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About the Author

Web Developer
United States United States
My name is Jeff Atwood. I live in Berkeley, CA with my wife, two cats, and far more computers than I care to mention. My first computer was the Texas Instruments TI-99/4a. I've been a Microsoft Windows developer since 1992; primarily in VB. I am particularly interested in best practices and human factors in software development, as represented in my recommended developer reading list. I also have a coding and human factors related blog at

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