public DateTime get_thoi_diem_can_hoan_thanh(string time) { string v_output = ""; CStoredProc v_cstore = new CStoredProc("pr_get_thoi_diem_can_hoan_thanh"); v_cstore.addNVarcharInputParam("@string_time", time); SqlParameter v_result = v_cstore.addDatetimeOutputParam("@thoi_diem_can_hoan_thanh", v_output); v_cstore.ExecuteCommand(this); return((DateTime)v_result.Value); }