C#WebBrowser中如何获取下拉列表中的值？

Question

  网页代码是这样的     <select name="DdlTypeId" id="DdlTypeId">
<option value="1">便携式心电</option>
<option value="2">无线血压</option>
<option value="3">无线血氧</option>
<option selected="selected" value="4">无线脂肪</option>
</select>
      
  请问如何获取到选中的值？ 就是有“selected”的“无线脂肪”;

Answer 1

遍历，看attribute中有selected属性，为selected的就是了。

Answer 2

HtmlElement s= null;
if (webBrowser1.Document.All[i].GetAttribute("value") == "")
{
  s= webBrowser1.Document.All[i];
  s.SetAttribute("checked", "checked");
}

Answer 3

 我是这样取的  
if (sender is WebBrowser)
                {
                   WebBrowser webbr =  (WebBrowser)sender;
                   HtmlElementCollection btn_Label = webbr.Document.GetElementsByTagName("span");                   if (webbr.Name.EndsWith("Equipment"))
                   {
                       HtmlElementCollection inputSqltem = webbr.Document.GetElementsByTagName("select");
                       foreach (HtmlElement eltems in inputSqltem)
                       {
                           if (eltems.GetAttribute("ID").ToString().Equals("DdlTypeId"))
                           {
                               temss = eltems.GetAttribute("selected").ToString();
                               break;
                           }
                       }
                   }      但是获取的temss老是空的。没有值啊。是不是写的不对？

Answer 4

int selectedIndex=Convert.ToInt32(heSelct.GetAttribute("selectedIndex"));
heSelct.GetElementsByTagName("option")[selectedIndex].OuterText;