Question

not able to get this, can someone help for this LINQ query?

select col1, 
(select col2 from tbl2 where tbl2.ID=tbl1.tbl2ID) as [col2] 
from tbl1  

scenario is like this

I want all records from Jobs table, Jobs has sectorID column, I also want SectorName. Also it has CountryID and CityID and I need CountryName and CityName too.

Answer 1

You need to do some joining. Not knowing your structure, something like the following might work.

Create a simple view model to hold your information:

public class JobView
{
    public int JobId { get; set; }
    public string JobName { get; set; }
    //Add any other fields you may need here
    public string SectorName { get; set; }
    public string CityName { get; set; }
    public string CountryName { get; set; }
    public string CityName { get; set; }

}

Then populate a list based on what you need

List<JobView> retVal = (from job in Jobs
                join sector in Sectors on job.SectorId equals sector.Id
                join country in Countries on job.CountryId equals country.Id
                join city in Cities on job.CityId equals city.Id
                select new JobView { 
                                JobId = job.Id,
                                JobName = job.JobName,
                                SectorName = sector.SectorName,
                                CountryName = country.CountryName,
                                CityName = city.CityName }).ToList();
    }

Any additional fields defined in JobView simply need to be populated during the select.