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;



namespace mytest

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }



        private void Form1_Load(object sender, EventArgs e)

        {

            System.Text.StringBuilder sb = new System.Text.StringBuilder();

            sb.Append("uno ");

            sb.Append("due ");

            sb.Append("tree");

            string str = sb.ToString();



            MessageBox.Show(str);





        }

    }

}