title: how to get values in GridView using C#
body: <p>How can I access a value in a GridView, in this case i have a <code>target_date</code> in there and would like to get that value and convert it to string. Here is what I have:</p>
  
  <pre><code>foreach (GridViewRow gr in GridView1.Rows)
  {
     CheckBox cb = (CheckBox)gr.FindControl("chkItem");
     if (cb.Checked)
     {
        string strTargetDate = "???"; // TODO
     }
  }
  </code></pre>