title: bind DataSource gridview + datatable to gridview
body: <p>I use asp.net and have <code>gridview</code>  control in aspx page. this gridview has not empty.</p>
  
  <p>I have table name in page and want bind table to gridview. so:</p>
  
  <pre><code>gvName.DataSource =  dtName;
  gvName.DataBind();
  </code></pre>
  
  <p>But with this code, Lost previous data in gridview. I went bind <code>gvName.DataSource + dtName</code> to <code>gvName</code>.</p>