Merging anonymous types

Question

How can I merge two anonymous types, so that the result contains the properties of both source objects?

var source1 = new
{
    foo = \"foo\",
    bar = \"ba         


        

Answer 1

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Dynamic;

namespace ConsoleApplication1
{
  class Program
  {
     static void Main(string[] args)
     {
        var source1 = new
        {
            foo = "foo",
            bar = "bar"
        };

        var source2 = new
        {
           baz = "baz"
        };

        dynamic merged = Merge(source1, source2);

        Console.WriteLine("{0} {1} {2}", merged.foo, merged.bar, merged.baz);
     }

     static MergedType Merge(T1 t1, T2 t2)
     {
        return new MergedType(t1, t2);
     }
  }

  class MergedType : DynamicObject
  {
     T1 t1;
     T2 t2;
     Dictionary members = new Dictionary(StringComparer.InvariantCultureIgnoreCase);

     public MergedType(T1 t1, T2 t2)
     {
        this.t1 = t1;
        this.t2 = t2;
        foreach (System.Reflection.PropertyInfo fi in typeof(T1).GetProperties())
        {
           members[fi.Name] = fi.GetValue(t1, null);
        }
        foreach (System.Reflection.PropertyInfo fi in typeof(T2).GetProperties())
        {
           members[fi.Name] = fi.GetValue(t2, null);
        }
     }

     public override bool TryGetMember(GetMemberBinder binder, out object result)
     {
        string name = binder.Name.ToLower();
        return members.TryGetValue(name, out result);
     }
  }
}