无法将此查询转换为lambda表达式

Question

我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表达式这个查询转换，但我得到如下错误。

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查询工作的罚款。

Answer 1

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();