irenecct

May i know did u include any library in your source code?

Yeah, U'll need to include this 2 libraries in your source code

<div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">Imports System.Net</div> <div style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;" id="_mcePaste">Imports System.IO</div>

Imports System.Net

Imports System.IO

You may refers to my previous post on this thread for a sample code with the libraries include. Hope it is helpful