add a search button on datagridview in c sharp.

OnClicked event of search button
* Get the record no from the textbox
* Write LInQ to fetch the result set based on record no
* Map the result of LInQ into DataSource property of datagridview control

private void mySearchButton_Click(object sender, System.EventArgs e)
{
   int recordNo = Convert.ToInt32(textbox1.text);
   var query = from table in dbtable
               where dbkey == recordNo
               select table;
   datagridview1.datasource = query.ToList();
}