Question

I’ve created an object that contains another collection in one of it properties.

This is the main object:

public class MeterPrevReadInfo
{
    public int JobMeterID { get; set; }
    public string PreviousJobReference { get; set; }
    public FuelType MeterFuelType { get; set; }
    public List<MeterPrevReadRegInfo> Regs { get; set; }
    public DateTime DateMeterRead { get; set; }
}

This is the child object:

public class MeterPrevReadRegInfo
{
    public string RegisterID { get; set; }
    public string MeterRead { get; set; }
}

I need to bind this object to a repeater control, I would like to show the DateMeterRead property and all the MeterRead properties in the repeater.

Is this possible using Linq? I could easily do it using a t-sql query from the database, but I just figured it should be possible to do this in memory without the overhead of another trip to the database.

Answer 1

sure this is possible. It looks like you want something like this:

 List<MeterPrevReadInfo> list = ...;

 var result = from item in list
              from info in item.Regs
              select new {item.DateMeterRead, info.MeterRead};

This query defines a list of anonymous objects with the two properties you want.