Binding data to datagrid header template on button click

[Santosh]

Dear all i want to bind data to the controls in the datagrid header
template on button click event which is not in the datagrid . i am
writting following code but it gives an error.
can any one tell me what is the solution behind them.

private void search_Click(ob ject sender, System.EventArg s e)
{
selectQuery();
}
private void selectQuery()
{
try
{

strcondition="s elect * from Student"
DataView dv ;
dv =
VS.DAC.PDMO.Gen eralDesMng.Sear chSectionsLines ByDistrict(strc ondition);
if (dv.Count 0)
{
Label number_Label =
(Label)searchRe sult_DataGrid.F indControl("num Header_Label");
number_Label.Te xt=
dv[0]["NumUnit"].ToString();
Label capacity_Label =
(Label)searchRe sult_DataGrid.F indControl("cap Header_Label");
capacity_Label. Text
=dv[0]["CapUnit"].ToString();
Label address_Label =
(Label)searchRe sult_DataGrid.F indControl("add rHeader_Label") ;
address_Label.T ext=dv[0]["AddrUnit"].ToString();
}
searchResult_Da taGrid.DataSour ce = dv;
searchResult_Da taGrid.DataBind ();
}
catch(Exception ex)
{
Response.Write( "<script
language=Javasc riptalert('"+
ex.Message.ToSt ring()+"') ;</script>");
}
}