Table Software

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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 table

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            string str = "";

            int n = Convert.ToInt32(textBox1.Text);

            for (int i = 1; i <= 10; i++)

            {

                int s = 0;

                s=n* i;

                str = str + n.ToString() + " X " + i.ToString() + " = " + (n * i) + "\n";               

                richTextBox1.Text = str;

            }

        }

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)

        {

            if (!(e.KeyChar >= 48 && e.KeyChar <= 57 || e.KeyChar==8))

            {

                e.Handled = true;

            }

        }

        private void button3_Click(object sender, EventArgs e)

        {

            textBox1.Text = "";

            richTextBox1.Text = "";

        }

        private void button2_Click(object sender, EventArgs e)

        {

            Close();

        }

    }

}

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