This class is used to connect an event handler to an HttpApplication event. It is used transparently by the ASP.NET framework.

public delegate IAsyncResult BeginEventHandler(object sender, EventArgs e, AsyncCallback cb, object extraData);

Passed To

HttpApplication.{AddOnAcquireRequestStateAsync( ), AddOnAuthenticateRequestAsync( ), AddOnAuthorizeRequestAsync( ), AddOnBeginRequestAsync( ), AddOnEndRequestAsync( ), AddOnPostRequestHandlerExecuteAsync( ), AddOnPreRequestHandlerExecuteAsync( ), AddOnReleaseRequestStateAsync( ), AddOnResolveRequestCacheAsync( ), AddOnUpdateRequestCacheAsync( )}