public DataTable Professor_urm_Sel_DepartmentID(string DepartmentID, string SubDepartmentID) { Staffdal t = new Staffdal(); DataSet ds = new DataSet(); DataTable dt = new DataTable(); if (SubDepartmentID == "#") { ds = t.Professor_urm_Sel_DepartmentID(DepartmentID, null); } else { ds = t.Professor_urm_Sel_DepartmentID(DepartmentID, SubDepartmentID); } if (ds.Tables.Count > 0) { dt = ds.Tables[0]; } return(dt); }