title: detailsview: automatic invoke insert or edit mode
body: <p>Table structure is as follows:</p>
  
  <pre><code>id int identity
  firstname varchar(100) 
  lastname varchar(100)
  </code></pre>
  
  <p>I have an detailsview control that displays/inserts/updates firstname lastname on profile.aspx page. </p>
  
  <p>If customer lands on this page with id in querystring then I want it to load that record into detailsview via sqldatasource and have edit button enabled.</p>
  
  <p>If customer lands on this page with out id in querystring then I want it to display blanks for first/lastname record into detailsview via sqldatasource and have insert button enabled.</p>
  
  <p>How do I accomplish that???</p>
  
  <p>Please help...</p>