title: simulate click button after opening webpage
body: <p>I have a requirement where I open a webpage using </p>
  
  <pre><code>WebRequest wr = WebRequest.Create(uri);
  </code></pre>
  
  <p>This webpage has a download button which needs to be clicked to download a zip file to my local directory. I do not know the URL for this download button, if i mouse over it it just shows the .aspx address. </p>
  
  <p>Now how can I simulate this click so I can download the file?</p>