'Usage
Dim instance As HttpApplication
Dim context As HttpContext
Dim cb As AsyncCallback
Dim extraData As Object
Dim returnValue As IAsyncResult
returnValue = CType(instance, IHttpAsyncHandler).BeginProcessRequest(context, _
cb, extraData)
'Declaration
Private Function BeginProcessRequest ( _
context As HttpContext, _
cb As AsyncCallback, _
extraData As Object _
) As IAsyncResult Implements IHttpAsyncHandler.BeginProcessRequest