title: How to disable a row in gridview?
body: <p>In have to disable a row in which chechbox is checked.I have tried it in RowDataBound event by using following code but it shows error <code>Object reference not set to an instance of an object</code>.</p>
  
  <pre><code>  CheckBox cbAttachClrReq = (CheckBox)gvEntity.FindControl("chkAdd");
  
    if (cbAttachClrReq.Checked)
    {
        this.gvEntity.Rows[e.Row.RowIndex].Enabled = false;
    }
  </code></pre>