form1.cs

来自「Visual C#2005程序设计教程」· CS 代码 · 共 35 行

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication５_10九九表
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            label1.Text = "";
            string s = "";
            int sum;
            for (int i = 1; i < 10; i = i + 1)
            {
                s = "";
                for (int k = 1; k <= i; k = k + 1)
                {
                    sum = k * i;
                    s = s + k.ToString() + "×" + i.ToString() + "=" + sum.ToString() + ";";
                }
                label1.Text += s + "\n";   // 显示并换行
            }
        }
    }
}