C#编写的windows计算器-源代码

C#编写的windows计算器-源代码(1)

选择自 CSPRO 的 Blog
using System;
using System.Drawing;
using System.Windows;
using System.Windows.Forms;
using System.Collections;
using System.ComponentModel;
using System.Data;

namespace comput
{
    /// <summary>
    /// 这是一个计算器的简单实现。
    /// </summary>

    public class Form1 : System.Windows.Forms.Form
    {
        #region 控件声明
   
        private System.Windows.Forms.TextBox txtShow;
        private System.Windows.Forms.GroupBox groupBox1;
        private System.Windows.Forms.Button btn_rev;
        private System.Windows.Forms.Button btn_dot;
        private System.Windows.Forms.Button btn_add;
        private System.Windows.Forms.Button btn_equ;
        private System.Windows.Forms.Button btn_sign;
        private System.Windows.Forms.Button btn_sub;
        private System.Windows.Forms.Button btn_mul;
        private System.Windows.Forms.Button btn_0;
        private System.Windows.Forms.Button btn_3;
        private System.Windows.Forms.Button btn_2;
        private System.Windows.Forms.Button btn_1;
        private System.Windows.Forms.Button btn_6;
        private System.Windows.Forms.Button btn_5;
        private System.Windows.Forms.Button btn_4;