// Dynamic LINQ - stef

​

// @nuget: System.Linq.Dynamic.Core

// @nuget: Z.EntityFramework.Classic

​

using System;

using System.Collections.Generic;

using System.Linq;

using System.Linq.Dynamic.Core;

using System.Linq.Dynamic.Core.CustomTypeProviders;

using System.Xml;

using System.Xml.Linq;

public class Program

{   

    public static void Main()

    {

        var config = new ParsingConfig

        {

            CustomTypeProvider = new MyCustomTypeProvider()

        };

        var IPName = (XName) "IP";

        var OSName = (XName) "OS";

        var query = new[] 

            {

                new { OS = "Windows", IPAddress = "127.0.0.1" },

                new { OS = "Linux",   IPAddress = "127.0.0.2" }

            }

            .AsQueryable()

            .Select(config, "XElement(@0, new [] { OS, XAttribute(@1, IPAddress) })", OSName, IPName);

        foreach (var result in query)

        {

            Console.WriteLine(result.ToString());

        }

    }

    public class MyCustomTypeProvider : DefaultDynamicLinqCustomTypeProvider

    {

        public override HashSet<Type> GetCustomTypes() => new[] { typeof(XElement), typeof(XAttribute) }.ToHashSet();

    }

}