title: c# webbrowser winforms http basic authentication - prompt user to input password
body: <p>I'm working on a c# webclient using winforms. </p>
  
  <p>I need the webbrowser control to prompt the origin windows authentication popup, when navigating to the page like in IE. </p>
  
  <p>I've already read the solution to build a Popup for getting the credentials. In my case it doesn't work, because it should support multiple servers, which handle the authetication different. Some of them doesn't need the popup - because they handle it on their own way.</p>
  
  <p>Thank you in advance!</p>
  
  <p>EDIT: here's the code I use to navigate to the URL: </p>
  
  <pre><code>URL = "http://" + UserID+ ":" + Password + "@" + URL;
  webBrowser.Navigate(URL);
  </code></pre>
  
  <p>When UserID &amp; Password is empty there should appear the same dialog as in IE to enter the password and user.
  Does anyone know, how to force webbrowser-control to show this dialog? </p>