using System;
    using System.Collections.Generic;
    using System.Data;
    using System.Drawing;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.Windows.Forms;

    namespace_2Program_TowNumber_Addition
    {
        public partial class Form1 : Form 
        {
            public Form1()
            {
                InitializeComponent();
            }
            private void button1_Click (object sender, EventArgs e)
            {    
                    int a,b,c;

                    a = Convert.ToInt16(texBox1.Text);
                    b = Convert.ToInt16(textBox2.Text);

                    c=a+b;

                    textBox3.Text=c.ToString();                   
            }
        }
    }