protected void uiButtonSearch_Click(object sender, EventArgs e) { Sector r = new Sector(); r.SearchPAXSectors(uiTextBoxSearch.Text, !string.IsNullOrEmpty(uiTextBoxFromDate.Text) ? DateTime.ParseExact(uiTextBoxFromDate.Text, "dd/MM/yyyy", null) : DateTime.ParseExact("01/01/1900", "dd/MM/yyyy", null) , !string.IsNullOrEmpty(uiTextBoxToDate.Text) ? DateTime.ParseExact(uiTextBoxToDate.Text, "dd/MM/yyyy", null) : DateTime.MaxValue); r.Sort = "SectorDate Desc"; uiRadGrid.DataSource = r.DefaultView; uiRadGrid.DataBind(); }