public void grdContingency_UpdateCommand(object sender, DataGridCommandEventArgs e)
{
String DetailId = "";
DetailId = grdContingency.DataKeys[Convert.ToInt32(e.Item.ItemIndex)].ToString();
Whitfieldcore _wc = new Whitfieldcore();
_wc.UpdateContingencyRecord(Convert.ToInt32(ViewState["EstNum"].ToString()), Convert.ToInt32(DetailId), ((TextBox)(e.Item.FindControl("txtqty"))).Text.ToString(), ((TextBox)(e.Item.FindControl("txtcost"))).Text.ToString());
grdContingency.EditItemIndex = -1;
grdContingency.ShowFooter = true;
BindContingency(Convert.ToInt32(ViewState["EstNum"].ToString()));
}