无法在lambda表达式中转换此查询
本文关键字:转换 查询 表达式 lambda | 更新日期: 2023-09-27 17:58:19
我一直坚持将此查询转换为lambda表达式。
SELECT Timesheet_Detail_Id, Date, Proj_Id, Task_Id, Ticket_No, Description, Hours, IsBillable, Billing_Hrs, Link_To, Status_Id, Timesheet_Id, flag, Remarks, EntryDate
FROM dbo.Timesheet_details
WHERE (Link_To = 7) OR
(Link_To =
(SELECT User_Id FROM dbo.User_Details
WHERE(Leader_User_Id = 7)))
我的尝试:-
int linkto=Convert.ToInt32(Session["login_user_Id"]);
var list=de.User_Details.Where(y => y.Leader_User_Id==linkto).Select(y => y.User_Id);
lvTimesheet.DataSource = de.TimeSheetDetailViews.Where(x => x.Link_To == linkto || x.Link_To == list).ToList();
我想在Lambda表达式中转换这个查询,但我得到了如下错误。
错误列表
Error 39 Cannot convert lambda expression to type 'string' because it is not a delegate type D:'Govinda'OfficeProjects'InfosenseTimeSheet'InfoSenseTimeSheet'InfoSenseTimeSheetWeb'ViewMyTimesheetList.aspx.cs 16 64 D:'...'InfoSenseTimeSheetWeb'
Error 40 Delegate 'System.Func<InfosenseTimeSheetModel.TimeSheetDetailView,int,bool>' does not take 1 arguments D:'Govinda'OfficeProjects'InfosenseTimeSheet'InfoSenseTimeSheet'InfoSenseTimeSheetWeb'ViewMyTimesheetList.aspx.cs 16 64 D:'...'InfoSenseTimeSheetWeb'
Error 41 Operator '==' cannot be applied to operands of type 'decimal' and 'System.Linq.IQueryable<decimal>' D:'Govinda'OfficeProjects'InfosenseTimeSheet'InfoSenseTimeSheet'InfoSenseTimeSheetWeb'ViewMyTimesheetList.aspx.cs 16 92 D:'...'InfoSenseTimeSheetWeb'
注:-
Sql查询运行良好。
我得到了答案
int linkto=Convert.ToInt32(Session["login_user_Id"]);
var list=de.User_Details.Where(y => y.Leader_User_Id==linkto).Select(y => y.User_Id);
lvTimesheet.DataSource = de.TimeSheetDetailViews.Where(x => x.Link_To == linkto || list.Contains(x.Link_To)).ToList();