本文共 7290 字，大约阅读时间需要 24 分钟。

首先上效果图

可能很多地方处理得并没有很好，刚上这个C#窗口课反正是一脸蒙蔽。就被布置了个写计算器的作业。可能老师对我的理解能力太自信了，我是真的写哪写什么都没搞懂，写哪会显示出什么都不知道，反正胡搞毛搞交作业。本来是不太乐意交trash的人，但这我是真没懂。

不过既然发了，那观众照着这个一定是可以做出我这图上的效果的。看别的博客真是个不断踩坑的过程。

界面控件的名称和属性设置

拖动控件摆出计算器样式，按上面的表格设置控件名称和属性值，再直接复制下面的代码到From.cs文件，你的计算器就完成了。当然，之后你也可以修改一些文字大小、颜色背景之类的样式，或者添加控件让它变得更美观。

• 以防有零基础的或者有还没学会的，在设计视图里双击控件，就可以进入控件操作编写代码

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 Calculator{    public partial class Form1 : Form    {        double a = 0;        double b = 0;        bool c = false;//判断文本框中是否有值        string d;            public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            if (c == true)            {                textBox1.Text = "";                c = false;            }            textBox1.Text += "1";        }        private void button2_Click(object sender, EventArgs e)        {            if (c == true)         //有值的话置为空            {                textBox1.Text = "";                c = false;            }            textBox1.Text += "2";        }        private void button3_Click(object sender, EventArgs e)        {            if (c == true)            {                textBox1.Text = "";                c = false;            }            textBox1.Text += "3";        }        private void button6_Click(object sender, EventArgs e)        {            if (c == true)            {                textBox1.Text = "";                c = false;            }            textBox1.Text += "4";        }        private void button5_Click(object sender, EventArgs e)        {            if (c == true)            {                textBox1.Text = "";                c = false;            }            textBox1.Text += "5";        }        private void button4_Click(object sender, EventArgs e)        {            if (c == true)            {                textBox1.Text = "";                c = false;            }            textBox1.Text += "6";        }        private void button9_Click(object sender, EventArgs e)        {            if (c == true)            {                textBox1.Text = "";                c = false;            }            textBox1.Text += "7";        }        private void button8_Click(object sender, EventArgs e)        {            if (c == true)            {                textBox1.Text = "";                c = false;            }            textBox1.Text += "8";        }        private void button7_Click(object sender, EventArgs e)        {            if (c == true)            {                textBox1.Text = "";                c = false;            }            textBox1.Text += "9";        }        private void button12_Click(object sender, EventArgs e)        {            if (c == true)            {                textBox1.Text = "";                c = false;            }            textBox1.Text += "0";        }        private void button_add_Click(object sender, EventArgs e)        {            if (textBox1.Text == "") { MessageBox.Show("请先输入值再计算！", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }            else            {                c = true; b = double.Parse(textBox1.Text);                d = "+";            }        }        private void button_subtract_Click(object sender, EventArgs e)        {            if (textBox1.Text == "") { MessageBox.Show("请先输入值再计算！", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }            else            {                c = true; b = double.Parse(textBox1.Text);                d = "-";            }        }        private void button_multiply_Click(object sender, EventArgs e)        {            if (textBox1.Text == "") { MessageBox.Show("请先输入值再计算！", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }            else            {                c = true; b = double.Parse(textBox1.Text);                d = "*";            }        }        private void button15_Click(object sender, EventArgs e)        {        }        private void button_divide_Click(object sender, EventArgs e)        {            if (textBox1.Text == "") { MessageBox.Show("请先输入值再计算！", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }            else            {                c = true; b = double.Parse(textBox1.Text);                d = "/";            }        }        private void button11_Click(object sender, EventArgs e)        {            textBox1.Text = "";        }        private void button14_Click(object sender, EventArgs e)        {            if (textBox1.Text == "") { MessageBox.Show("请先输入值再计算！", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }            else            {                c = true;                b = double.Parse(textBox1.Text);                d = "x^2";            }        }        private void button_sqrt_Click(object sender, EventArgs e)        {            if (textBox1.Text == "") { MessageBox.Show("请先输入值再计算！", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }            else            {                c = true;                b = double.Parse(textBox1.Text);                d = "sqrt";            }        }        private void button_log_Click(object sender, EventArgs e)        {            if (textBox1.Text == "") { MessageBox.Show("请先输入值再计算！", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }            else            {                c = true;                b = double.Parse(textBox1.Text);                d = "log";            }        }        private void button_ln_Click(object sender, EventArgs e)        {            if (textBox1.Text == "") { MessageBox.Show("请先输入值再计算！", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }            else            {                c = true;                b = double.Parse(textBox1.Text);                d = "ln";            }        }        private void button17_Click(object sender, EventArgs e)        {            switch (d)            {                case "+": a = b + double.Parse(textBox1.Text); break;                case "-": a = b - double.Parse(textBox1.Text); break;                case "*": a = b * double.Parse(textBox1.Text); break;                case "/": a = b / double.Parse(textBox1.Text); break;                case "x^2": a = b * b; break;                case "sqrt": a = Math.Sqrt(b); break;                case "log": a = Math.Log10(b); break;                case "ln": a = Math.Log(b); break;            }            textBox1.Text = a + "";            c = true;        }    }}

这个代码的意思大致是，b保存第一个数字，textBox1.Text录入新输入的数字，d保存运算操作，a输出运算结果，c判断输入是否正确。

这篇可能是我写的最阿巴阿巴的博客了，希望大家都能学好吧！

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