problem with sorting a datagrid

[Newbie]

Hi!

I am trying to let the user sort a column by clicking on the column header
but not having any success. Pls. help.

I have a BoundColumn and used the Data Field value for the SortExpression
value.

I dont know what to put inside the event handler:

private void DataGrid_SortCo mmand(object source,
System.Web.UI.W ebControls.Data GridSortCommand EventArgs e)
{

}

Thanks in advance.