using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Data.SqlClient;



namespace WindowsFormsApplication3

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }



        private void Form1_Load(object sender, EventArgs e)

        {

            // popolo dizionario

            var dict = new Dictionary<int, bool>();

            dict.Add(3, true);

            dict.Add(5, false);



            //ottengo lista tutte le chiavi

            List<int> keys = new List<int>(dict.Keys);

            foreach (int key in keys)

            {

                MessageBox.Show(key.ToString());

            }





           }            

	       

	 }             

    

}