前言：環(huán)境是vs 2022

1、打開vs2022后，右邊導(dǎo)航欄選擇創(chuàng)建新項目。

?2、選擇Windows窗體應(yīng)用（.net? Framework）

?3、進入配置新項目界面（項目名稱和位置可自行修改）點擊創(chuàng)建

?4、窗體From1即為我們要要編輯的位置

?5、在窗體中添加對應(yīng)的工具

6、并在對應(yīng)的屬性窗口為其修改對應(yīng)的屬性

以按鈕1為例可修改Name為b1（方便在代碼界面查錯）? text為1?

?

?7、以下為代碼界面內(nèi)容

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

namespace lzk_WindowsFormsApp2
{
    public partial class Form1 : Form
    {
        Boolean flag = true;
        double x = 0;
        double y = 0;
        bool dot = false;
        string sign = "";
        public Form1()
        {
            InitializeComponent();
        }

        private void button3_Click(object sender, EventArgs e)//為c處按鈕
        {
            textBox1.Text = "0";
            x = y = 0;
            flag = true;
            dot = false;
            sign = "";
           
        }

        private void button1_Click(object sender, EventArgs e)//為ce處代碼
        {
            if(flag == false)
            {
                textBox1.Text = "";
                dot = false;
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void BackSpase_Click(object sender, EventArgs e)
        {
            if (flag == true) return;
            if (textBox1.Text.EndsWith("."))
                dot = false;
            string s = textBox1.Text;
            textBox1.Text = s.Remove(s.Length - 1);
            if (textBox1.Text.Length == 0 || textBox1.Text.Equals("-"))
                textBox1.Text = "";
        }

        private void b1_Click(object sender, EventArgs e)
        {
            Button b = sender as Button;
            if (flag == true || textBox1.Text.Equals("o"))
            {
                textBox1.Text = b.Text;
                flag = false;
            }
            else
                textBox1.Text += b.Text;
        }

        private void jia_Click(object sender, EventArgs e)
        {
            Button bt = sender as Button;
            flag = true;
            dot = false;
            if (textBox1.Text.EndsWith("."))
            {//如果最后一位是小數(shù)點，則刪除
                String s = textBox1.Text;
                textBox1.Text = s.Remove(s.Length - 1);
            }
            x = double.Parse(textBox1.Text);
            sign = bt.Text;//保存計算符號
        }

        private void bdot_Click(object sender, EventArgs e)
        {
            if (dot == true) return;
            if (flag == true)
            {
                textBox1.Text = "0";
                flag = false;
            }
            else textBox1.Text += ".";
            dot = true;
        }

        private void deng_Click(object sender, EventArgs e)
        {
            if (sign.Equals("") || flag == true) return;
            flag = true;
            dot = false;
            if (textBox1.Text.EndsWith("."))
            {
                string s = textBox1.Text;
                textBox1.Text = s.Remove(s.Length - 1);
            }
            y = double.Parse(textBox1.Text);
            switch (sign)
            {
                case "+": x = y + x; break;
                case "-": x = x - y; break;
                case "*": x = x * y; break;
                case "/": x = x / y; break;
            }
            textBox1.Text = x.ToString();
            sign = "";
        }

        private void neg_Click(object sender, EventArgs e)
        {
            if(flag == true || textBox1.Text.Equals("0")) return;
            if (textBox1.Text.Contains("-"))
                textBox1.Text = textBox1.Text.Substring(1);
            else textBox1.Text = "-" + textBox1.Text;
        }
    }
}

8、其他的3456789按鈕可以按住shift全部選中在右邊屬性窗口選擇事件，在事件欄中的Click中選擇繼承b1的按鈕處的代碼。

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