c#窗体简易计算器（初级版）

迈不过友情╰ 2021-09-22 12:40 479阅读 0赞

![201806101638085][]

我是一个初学者，从这些简单的开始做起。

把简单的练熟，便是成功了一小步。

下面是代码完整版，可以实现简单的运算，可以实现连续的运算。但是有些细节没考虑。

希望大神们帮我指正。

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 简易计算器
    {
        public partial class Frm_Main : Form
        {
            int a = 0, b = 0;                     //储存输入数字的整型
            int total=0;                            //用于储存结果
            int m = 1;                               //用于乘法第一项乘以1
            string s;                                  //用来储存输入的每个数
            string d;                                 //用来辨别进行何种运算
            bool c=false;   
            public Frm_Main()
            {
                InitializeComponent();
            }
    
            private void button1_Click(object sender, EventArgs e)
            {
                if (c == true)
                {
                    textBox1.Text = "";
                    c = false;
                }
                s += "1";
                textBox1.Text += "1";
            }
    
            private void button2_Click(object sender, EventArgs e)
            {
                if (c == true)
                {
                    textBox1.Text = "";
                    c = false;
                }
                s += "2";
                textBox1.Text += "2";
            }
    
            private void button3_Click(object sender, EventArgs e)
            {
                if (c == true)
                {
                    textBox1.Text = "";
                    c = false;
                }
                s += "3";
                textBox1.Text += "3";
            }
    
            private void button4_Click(object sender, EventArgs e)
            {
                if (c == true)
                {
                    textBox1.Text = "";
                    c = false;
                }
                s += "4";
                textBox1.Text += "4";
            }
    
            private void button5_Click(object sender, EventArgs e)
            {
                if (c == true)
                {
                    textBox1.Text = "";
                    c = false;
                }
                s += "5";
                textBox1.Text += "5";
    
            }
    
            private void button6_Click(object sender, EventArgs e)
            {
                if (c == true)
                {
                    textBox1.Text = "";
                    c = false;
                }
                s += "6";
                textBox1.Text += "6";
            }
    
            private void button7_Click(object sender, EventArgs e)
            {
                if (c == true)
                {
                    textBox1.Text = "";
                    c = false;
                }
                s += "7";
                textBox1.Text += "7";
            }
    
            private void button8_Click(object sender, EventArgs e)
            {
                if (c == true)
                {
                    textBox1.Text = "";
                    c = false;
                }
                s += "8";
                textBox1.Text += "8";
            }
    
            private void button9_Click(object sender, EventArgs e)
            {
                if (c == true)
                {
                    textBox1.Text = "";
                    c = false;
                }
                s += "9";
                textBox1.Text += "9";
            }
    
            private void button12_Click(object sender, EventArgs e)           //实现加法
            {
                if (c == true)
                {
                    textBox1.Text = "";
                    c = false;
                }
                d = "+";
                a = int.Parse(s);
                total += a;
                textBox1.Text += "+";
                s = "";
            }
    
            private void button11_Click(object sender, EventArgs e)                //清空
            {
                textBox1.Text = ""; 
                s = "";
                total = 0;
            }
    
            private void button14_Click(object sender, EventArgs e)                // 实现减法
            {
                if (c == true)
                {
                    textBox1.Text = "";
                    c = false;
                }
                d = "-";
                a = int.Parse(s);
                if (textBox1.Text ==a.ToString())                                                 //判断是不是第一个数
                    total = a;
                else
                    total -= a;          
                textBox1.Text += "-";
                s = "";
            }
    
            private void button16_Click(object sender, EventArgs e)                //实现除法
            {
                if (c == true)
                {
                    textBox1.Text = "";
                    c = false;
                }
                d = "/";
                a = int.Parse(s);    
                if (textBox1.Text == a.ToString())                                             //判断是不是第一个数
                    total = a;
                else
                    total /= a;
                textBox1.Text += "/";
                s = "";
            }
    
            private void button15_Click(object sender, EventArgs e)                //实现乘法
            {
                if (c == true)
                {
                    textBox1.Text = "";
                    c = false;
                }
                d = "*";
                a = int.Parse(s);
                m*= a;
                total+= m;
                textBox1.Text += "*";
                s = "";
            }
            private void button13_Click(object sender, EventArgs e)                    //输出结果
            {
                switch(d)
                {
                    case "+":
                        b = int.Parse(s);
                        total += b;
                        textBox1.Text += "=";
                        textBox1.Text += total.ToString();
                        break;
                    case "*":
                        b = int.Parse(s);
                        total *= b;
                        textBox1.Text += "=";
                        textBox1.Text += total.ToString();
                        m = 1;
                        break;
                    case "-":
                        b = int.Parse(s);
                        total -= b;
                        textBox1.Text += "=";
                        textBox1.Text += total.ToString();
                        break;
                    case "/":
                        b = int.Parse(s);
                        total /= b;
                        textBox1.Text += "=";
                        textBox1.Text += total.ToString();
                        break;
                }          
            }
    
            private void button10_Click(object sender, EventArgs e)
            {
                if (c == true)
                {
                    textBox1.Text = "";
                    c = false;
                }
                s += "0";
                textBox1.Text += "0";
            }
        }
    }

欢迎指正，以及提出更多建议。谢谢！

[201806101638085]: /images/20210920/27613930b0b343e5be4620f2a3d5c956.png