form1.cs

Visual C#2005程序设计教程

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

namespace WinAppTest5_2提取
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            listBox1.Items.Clear();
            long x,  t, i=0;
            x = long.Parse(textBox1.Text);
            while (x > 0)
            {
                i++;
                t = x % 10;         /* 从个位开始，求出x中的每一位 */
                //y = y + t * n;      /* 变量y用来存放结果 */
                //n = n * 10;
                x = x / 10;
                listBox1.Items.Add("第"+i+"位的值为："+t);
            }
        }
    }
}