Private Function BeginProcessRequest ( _
    context As HttpContext, _
    cb As AsyncCallback, _
    extraData As Object _
) As IAsyncResult Implements IHttpAsyncHandler.BeginProcessRequest

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)

IAsyncResult IHttpAsyncHandler.BeginProcessRequest(
    HttpContext context,
    AsyncCallback cb,
    Object extraData
)

private:
virtual IAsyncResult^ BeginProcessRequest(
    HttpContext^ context, 
    AsyncCallback^ cb, 
    Object^ extraData
) sealed = IHttpAsyncHandler::BeginProcessRequest

JScript does not support explicit interface implementations.