using System;

using System.Collections.Generic;

​

public class Program {

    public static void Main() {

        var dicionario = new Dictionary<string, MyObject> {

            ["item1"] = new MyObject("item1", "valor1", 1, 1.1),

            ["item2"] = new MyObject("item2", "valor2", 2, 2.2),

            ["item3"] = new MyObject("item3", "valor3", 3, 3.3)

        };

        Console.WriteLine(dicionario["item2"].Value);

    }

}

​

public class MyObject {

    public string Name {get; set;}

    public string Value {get; set;}

    public int Prop1 {get; set;}

    public double Prop2 {get; set;}

​

    public MyObject (string name, string valueParam, int prop1, double prop2){

        this.Name = name;

        this.Value = valueParam;

        this.Prop1 = prop1;

        this.Prop2 = prop2;

    }

}