Winform webbrowser 隐藏 html 元素

目的：用webbrowser打开网页，并隐藏网页上某个html元素

1.如果已知元素ID，比较好办

直接使用webbrowser1.Document.getElementById("id")获取元素，并修改属性

 HTMLDocument thedocument = WebBrowser.document.all;
 HTMLElement theelement = thedocument.getElementById(""); //这里找你要藏的东西的ID；
 theelement.setAttribute("visible",false);
 或者
 HtmlElement htm = webBrowser1.Document.GetElementById("控件ID");
 htm.OuterHtml = ""; 

2.未知元素ID，根据Name获得元素，然后筛选出所需元素隐藏

 HtmlElementCollection opts = webBrowser1.Document.GetElementsByTagName("table");
             if (opts.Count > )
             {
                 foreach (HtmlElement ele in opts)
                 {
                     if (ele.GetAttribute("class") == "a3")
                     {
                         //opts[0].InnerHtml = ""; /*低版本IE不适用*/
                         opts[].Style = "display:none";
                     }
                 }

             }

3.隐藏子元素

   HtmlElement ele = webBrowser1.Document.GetElementById("List");
                     HtmlElementCollection List= ele.Children[].Children;
                     if (List.Count > )
                     {
                         foreach (HtmlElement b in List)
                         {
                             if (b.Children[].GetAttribute("value") == "xxx")
                             {
                                 b.Style = "display:none";
                             }
                         }
                     }