Question

Object is simple, it’s a rate of pay:

public class RateOfPay
{
    public decimal Rate { get; set; }
    public DateTime Start { get; set; }
    public DateTime? End { get; set; }
}

and I’m trying to get it like this:

IEnumerable<T> rates = GetRates(); 
/*  
    actual collection is DevExpress XPCollection<RateOfPay> 
    which implements IEnumerable<T>
*/

var rate = from r in rates where r.End == null select r; // err here

It’s odd because the intellisense works fine on r, but it’s saying that r is an IEnumerable collection?

What am I missing?

Answer 1

It is a collection, it’s an IEnumerable().Where(rate => rate.End == null) which is all rates that match that criteria.

You’re missing the .FirstOrDefault() on your IEnumerable, can’t tell you the statement query syntax though..

Should look like

var rate = rates.FirstOrDefault(r => r.End == null);