mshtml拷贝图片文件

private Image GetWebImage(WebBrowser WebCtl, HtmlElement ImgeTag)
        {
            HTMLDocument doc = (HTMLDocument)WebCtl.Document.DomDocument;
            HTMLBody body = (HTMLBody)doc.body;
            IHTMLControlRange rang = (IHTMLControlRange)body.createControlRange();
            IHTMLControlElement Img = (IHTMLControlElement)ImgeTag.DomElement; //图片地址  

            Image oldImage = Clipboard.GetImage();
            rang.add(Img);
            rang.execCommand("Copy", false, null);  //拷贝到内存  
            Image numImage = Clipboard.GetImage();
            try
            {
                Clipboard.SetImage(oldImage);
            }
            catch
            {
            }

            return numImage;
        }