Below is just a simple HTTPModule -

Imports System Imports System.Web Imports System.Diagnostics Public Class SampleModule : Implements IHttpModule Public Sub Dispose() Implements IHttpModule.Dispose End Sub Public Sub Init(ByVal application As HttpApplication) Implements IHttpModule.Init AddHandler application.BeginRequest, AddressOf Me.OnBeginRequest End Sub Public Sub OnBeginRequest(ByVal sender As Object, ByVal e As EventArgs) Dim app As HttpApplication = CType(sender, HttpApplication) Dim browscap As HttpBrowserCapabilities = app.Request.Browser If browscap.Browser = "Netscape" Then 'w00t ElseIf browscap.Browser = "IE" Then 'EEK! Else 'wha? End If End Sub End Class

As you can see, this class implements all of the required methods, it also adds a handler for one of it's events. The event handling is usually the way that you time your events correctly as shoving it in the Init method isn't the most effective way.

Currently it doesn't do anything but check the browser and print the name of the browser to the screen.

The next thing you have to do is add it to the web.config of the application like -

<httpModule> <add name="SampleModle" type="HttpModHan.SampleModule, HttpModHan" /> </httpModule>

<add name="A Name" type="Class, Assembly" />

It should look like -

When running.