Question

I have this LINQ query:

 var returnList = from TblItemEntity item in itemList
                     join TblClientEntity client in clientList
                     on item.ClientNo equals client.ClientNumber
                     join TblJobEntity job in jobList
                     on item.JobNo equals job.JobNo
                     where item.ClientNo == txtSearchBox.Text //Is this filter wrong?
                     orderby client.CompanyName
                     select new { FileId = item.FileId, CompanyName = client.CompanyName, LoanStatus = item.LoanStatus, JobNo = job.JobNo, JobFinancialYE = job.JobFinancialYE, VolumeNo = item.VolumeNo };

Why doesn’t this return anything?

P/S : All of them are of string datatype.

Answer 1

Have you tried to remove parts of the join to figure out where the problem is and then add those removed parts back again one after one? Start with:

var returnList = from TblItemEntity item in itemList
                 where item.ClientNo == txtSearchBox.Text //Is this filter wrong?
                 select new { FileId = item.FileId };

Since you’re doing inner joins there could be that one of the joins filters out all the items.

EDIT: When debugging don’t expand the return type, the select new {FileId = item.FileId} is all you need to debug.