title: Auto type a keyword in a website's textbox and submit
body: <p>I have a project about automatic accessing to website: www.alexa.com and take the results( traffic rank, page rank)  of a website (inputed in a textbox) to C# code.
  Would you tell me how to type a website address in textbox of www.alexa.com page, and press submit automaticaly ? Then how can I take the result???
  Please!!!
  First, I have a function to access to www.alexa.com page:</p>
  
  <pre><code>public void LauchBr()
          {
              string URL = "http://www.alexa.com";
  
              try
              {
                  System.Diagnostics.Process.Start(URL);
              }
              catch
              (
              System.ComponentModel.Win32Exception noBrowser)
              {
                  if (noBrowser.ErrorCode == -2147467259)
                      MessageBox.Show(noBrowser.Message);
              }
              catch (System.Exception other)
              {
                  MessageBox.Show(other.Message);
              }
          }
  </code></pre>