public FrmMain() { frmGrid = new FrmGridContainer(); IsMdiContainer = true; frmGrid.MdiParent = this; InitializeComponent(); WindowState = FormWindowState.Maximized; frmGrid.RegisterConditionalFormat(); frmGrid.Configure( query: GetData(), //Please don't do //totalRowCount: () => GetData().ToList().Count ;) totalRowCount: () => 50000, pageSize: 1000); frmGrid.Show(); }