using System;

using System.Linq.Expressions;

public class Program

{

    public static void Main()

    {

        var foo = Expression.MemberInit(

            Expression.New(typeof(Foo)),

            Expression.Bind(typeof(Foo).GetProperty("Bar"), Expression.Constant("bar")),

            Expression.Bind(typeof(Foo).GetProperty("Baz"), Expression.Constant(5)));

        var lambda = Expression.Lambda<Func<Foo>>(foo).Compile();

        lambda().Dump();

    }

}

​

public class Foo

{

    public string Bar { get; set; }

    public int Baz { get; set; }

}