Double Click event for a Row in a Grid View

1. First while on OnRowDataBound Method of your GridView insert the following:

if (e.Row.RowType == DataControlRowType.DataRow)
{
  for (int i = 0; i < (e.Row.Cells.Count); i++)
{
     e.Row.Attributes.Add("ondblclick", "Javascript:rowDblClick();");
  }
}
2. Write a javascript method in your aspx page.

  function rowDblClick(){ 
        alert("done!");
 
      }
 Thats it you are done !