void RefreshGrid(string term = null, string examPlaceID = "-1", int did = -1, string examDate = "-1", string examTime = "-1") { if (string.IsNullOrEmpty(ddl_Cities.SelectedValue) || ddl_Cities.SelectedValue?.ToString() == "-2") { ddl_ExamDate.SelectedValue = "-1"; ddl_Saat.SelectedValue = "-1"; RadG_AllDids.DataSource = new DataTable(); RadG_AllDids.DataBind(); } else { DataTable dt = new DataTable(); var dateexam = (string.IsNullOrEmpty(ddl_ExamDate.SelectedValue) || ddl_ExamDate.SelectedValue == "-1") ? "-1" : ddl_ExamDate.SelectedValue; var saatexam = (string.IsNullOrEmpty(ddl_Saat.SelectedValue) || ddl_Saat.SelectedValue == "-1") ? "-1" : ddl_Saat.SelectedValue; dt = EBusiness.GetAllDidsByInputFilters(term, int.Parse(examPlaceID), did, examDate, examTime); RadG_AllDids.DataSource = dt; RadG_AllDids.DataBind(); } }