C#中没有id 没有name C#怎么点击按钮

HTML按钮元素

<input type="submit" value="确定" class="dialogbtn"

 

C# 执行代码

1 HtmlDocument doc = webBrowser1.Document;

2             HtmlElementCollection coll = doc.GetElementsByTagName("input");

3             foreach (HtmlElement item in coll)

4             {

5                 if (item.GetAttribute("value") == "确定")

6                 {

7                     item.InvokeMember("click");

8                 }

9             }