拦截POST数据C＃webbrowser winform [英] Intercept POST data C# webbrowser winform

问题描述

我正在尝试抓一个网页。使用C＃和WinForms。我可以将页面加载到WebBrowser中，调用表单的post方法，并获得结果。我想更改日期并重新提交表单。不幸的是，选择日期的控件是一个只读控件，由很多不容易访问的ajax代码（axd文件）驱动。



我以为它会最好在它进入服务器之前尝试拦截POST数据并更改日期字符串。



我似乎无法找到获取帖子的方法数据发送到服务器之前。有没有办法抓住它，修改它，然后发送它的方式？



我尝试过：

 public void CompletedHander（对象发送者，
 WebBrowserDocumentCompletedEventArgs e）
 {
 WebBrowser wb =（（WebBrowser）sender）; 
 
 HtmlElement button = wb.Document.GetElementById（ctl00 $ WebSplitter1 $ tmpl1 $ ContentPlaceHolder1 $ HeaderBTN1 $ btnRetrieve）; 
 if（button！= null）
 {
 _pushed = true; 
 button.InvokeMember（click）; 
} 
} 
 

解决方案

WebSplitter1

tmpl1

ContentPlaceHolder1

I am trying to scrape a web page. Using C# and WinForms. I can load the page into a WebBrowser, invoke the post method for a form, and get the results. I'd like to then change the date and resubmit the form. Unfortunately the control for picking the date is a read only control driven by a lot of ajax code (axd files) that aren't easily accessible.

I thought it would be better to try to intercept the POST data before it goes to the server and change the date string.

I can't seem to find a way to get the post data before it is sent to the server. Is there some way to grab it, modify it, and then send it on it's way?

What I have tried:

public void CompletedHander(object sender,
      WebBrowserDocumentCompletedEventArgs e)
{
      WebBrowser wb = ((WebBrowser)sender);

      HtmlElement button = wb.Document.GetElementById("ctl00$WebSplitter1$tmpl1$ContentPlaceHolder1$HeaderBTN1$btnRetrieve");
      if (button != null)
      {
           _pushed = true;
           button.InvokeMember("click");
      }
}

解决方案

WebSplitter1

tmpl1

ContentPlaceHolder1

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