Linq声明OrderBy在DataRow集合上不起作用

Question

I have the following business entities and I want to apply LINQ on this.

public class DTPackage
{

    private int _packageID;

    private DTContract _flightComponent;
    private HotelAvailability.HotelCollectionRow _hotelComponent;
    .........
    #region Public Properties
}

public partial class HotelCollectionRow : global::System.Data.DataRow 
{

    private global::System.Data.DataColumn columnSortByEngine;
    private global::System.Data.DataColumn columnDistanceFromLocation;
    private global::System.Data.DataColumn columnSortByDistanceFromLocationGroup;
    private global::System.Data.DataColumn columnIsCommissionBased;
    private global::System.Data.DataColumn columnSortByRank;
    private global::System.Data.DataColumn columnSortByInternalRating;
}

I have written following query but it's not working.

My Query

 List<DTPackage> filterPackageList = null;
 var query = filterPackageList.AsEnumerable()
             .OrderByDescending(m => m.HotelComponent.DistanceFromLocation);

filterPackageList is full of data.

Answer 1

I think that you should try the below solution

var query = filterPackageList.AsEnumerable()
           .OrderByDescending(m => m.HotelComponent.DistanceFromLocation).ToList();