public static void DataGrid1_UpdateCommand (object source, DataGridCommandEventArgs e)
{
DataGrid DataGrid1 = (DataGrid) source;
MyDataSource ds = new MyDataSource ();
TextBox edittedName = (TextBox) e.Item.Cells [1].Controls [0];
ds.UpdateItem (e.Item.DataSetIndex, Int32.Parse (e.Item.Cells [0].Text), edittedName.Text);
DataGrid1.EditItemIndex = -1;
DataGrid1.DataBind ();
}