title: Non-invocable member 'System.Web.HttpRequest.ServerVariables' cannot be used like a method
body: <p>I want to retrive value as below :</p>
  
  <pre><code>    string server = Request.ServerVariables("SERVER_NAME");
      //Declare the form being accessed ex: Default.aspx
      string url = Request.ServerVariables("URL");
      // Declare the query string in the URL
      string querystring = Request.ServerVariables("QUERY_STRING");
  </code></pre>
  
  <p>But I got a error :</p>
  
  <blockquote>
    <p>Non-invocable member 'System.Web.HttpRequest.ServerVariables' cannot be used like a method.</p>
  </blockquote>
  
  <p>Please help to find my mistake.Thanks.</p>