网页浏览器控制c＃只调用下次第一次不工作

我想从网站中提取一些数据，但submitbutton只调用第一次在文档中完成event.after加载第一次提交的页面文档完成事件不执行我的代码是网页浏览器控制c＃只调用下次第一次不工作

private void b_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) 
    { 
     WebBrowser b = sender as WebBrowser; 
     string response = ""; 
     response = b.DocumentText; 
     HtmlElement links = b.Document.GetElementById("btn1"); 
     links.InvokeMember("click"); 
     checkTrafiicButtonClick = true; 
     MessageBox.Show(""); 
     ***// upto these working and loading second page after that i want to fill data 
      and want to submit but down line is not working and it should be work after  
      loading the page that i submitted how can i do these*** 

     HtmlElement tfrno = b.Document.GetElementById("TrfNo"); 
     tfrno.SetAttribute("value", "50012079"); 
     HtmlElement submitButon = b.Document.GetElementById("submitBttn"); 
     submitButon.InvokeMember("click"); 

    }

来源

2013-02-13 dfgv

不BTN1点击加载新一页？ – VladL 2013-02-13 12:06:28

是第一页btn1点击执行和第二页loadig，但我想填写第二页的输入框，并要提交 – dfgv 2013-02-13 12:10:50

只需添加一个变量，以跟踪你的网页。 – 2013-02-13 13:20:23

根据您的评论，您的代码将无法正常工作。第一次点击后，webbroser启动异步页面加载。你应该做以下几点：

private void b_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) 
    { 
     WebBrowser b = sender as WebBrowser; 
    if(b.Url.AbsoluteUri == "mydomain.com/page1.html") 
    { 
     string response = ""; 
     response = b.DocumentText; 
     HtmlElement links = b.Document.GetElementById("btn1"); 
     links.InvokeMember("click"); 
     checkTrafiicButtonClick = true; 
     MessageBox.Show(""); 
     return; 
    } 
     ***// upto these working and loading second page after that i want to fill data 
      and want to submit but down line is not working and it should be work after  
      loading the page that i submitted how can i do these*** 
    if(b.Url.AbsoluteUri == "mydomain.com//page2.htm") 
    { 
     HtmlElement tfrno = b.Document.GetElementById("TrfNo"); 
     tfrno.SetAttribute("value", "50012079"); 
     HtmlElement submitButon = b.Document.GetElementById("submitBttn"); 
     submitButon.InvokeMember("click"); 
     return; 
    } 
    }

还要注意，该页面的某些部分可以从不同的源iframe被加载，例如，所以你必须检查适当uri

来源

2013-02-13 12:35:28 VladL

是的，实际上是第二页的一些数据从iframe的一些另一个url llr如何检查帧加载是否完成？ – dfgv 2013-02-13 13:21:34

@eldhose DocumentCompleted将针对每个加载的url启动。然后使用fiddler分配帧的地址并检查它是否已经被加载。 – VladL 2013-02-13 13:39:53

网页浏览器控制c＃只调用下次第一次不工作

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