C#编写简单窗体计算器

来源：互联网发布：运行windows窗口管理器编辑：程序博客网时间：2024/06/01 08:52

说起来话长......

大一学习了一年C++了，一直想做一个 GUI的简单计算器，但是在经历各种折磨之后决定放弃。。。。。

因为偶然的机会开始接触学习C#，或许因为有C++的基础，感觉上手还算容易！

在自学窗体后，又突然想起了曾经这个美妙的想法！话不多说，说做就做，在借鉴几篇博客之后，结果如下。

由于本人水平有限，大神莫见笑。

效果图：

C#实现简单计算器，代码如下：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace Calculator{    public partial class Form1 : Form    {        private double num1 = 0; // 第一操作数        private double num2 = 0; // 第二操作数        private double num3 = 0; // 两操作数结果        private string sign; // 运算符号        private bool flag = true; // 检查是否为第一操作数        public void Input_1(string s)        {            textBox1.Text += s;            num1 = Convert.ToDouble(textBox1.Text);        }        public void Input_2(string s)        {            textBox1.Text += s;            num2 = Convert.ToDouble(textBox1.Text);        }        public Form1()        {            InitializeComponent();        }        private void Form1_Load(object sender, EventArgs e)        {            label1.Text = "是的！这只是一个垃圾计算器,他还有BUG！";            linkLabel1.Links[0].LinkData = "http://www.lhldev.cn";        }        private void button1_Click(object sender, EventArgs e)        {            if (flag)            {                Button b = (Button)sender;                Input_1(b.Text);            }            else            {                Button b = (Button)sender;                Input_2(b.Text);            }        }        private void button2_Click(object sender, EventArgs e)        {            if (flag)            {                Button b = (Button)sender;                Input_1(b.Text);            }            else            {                Button b = (Button)sender;                Input_2(b.Text);            }        }        private void button3_Click(object sender, EventArgs e)        {            if (flag)            {                Button b = (Button)sender;                Input_1(b.Text);            }            else            {                Button b = (Button)sender;                Input_2(b.Text);            }        }        private void button4_Click(object sender, EventArgs e)        {            if(flag)            {                Button b = (Button)sender;                Input_1(b.Text);            }            else            {                Button b = (Button)sender;                Input_2(b.Text);            }        }        private void button5_Click(object sender, EventArgs e)        {            if (flag)            {                Button b = (Button)sender;                Input_1(b.Text);            }            else            {                Button b = (Button)sender;                Input_2(b.Text);            }        }        private void button6_Click(object sender, EventArgs e)        {            if(flag)            {                Button b = (Button)sender;                Input_1(b.Text);            }            else            {                Button b = (Button)sender;                Input_2(b.Text);            }        }        private void button7_Click(object sender, EventArgs e)        {            if(flag)            {                Button b = (Button)sender;                Input_1(b.Text);            }            else            {                Button b = (Button)sender;                Input_2(b.Text);            }        }        private void button8_Click(object sender, EventArgs e)        {            if(flag)            {                Button b = (Button)sender;                Input_1(b.Text);            }            else            {                Button b = (Button)sender;                Input_2(b.Text);            }        }        private void button9_Click(object sender, EventArgs e)        {            if(flag)            {                Button b = (Button)sender;                Input_1(b.Text);            }            else            {                Button b = (Button)sender;                Input_2(b.Text);            }        }        private void button10_Click(object sender, EventArgs e) // 0        {            if(textBox1.Text!="")            {                if(flag)                {                    Button b = (Button)sender;                    Input_1(b.Text);                }                else                {                    Button b = (Button)sender;                    Input_2(b.Text);                }            }        }        private void button13_Click(object sender, EventArgs e)        {            sign = "+";            textBox1.Text = "";            flag = false;        }        private void button14_Click(object sender, EventArgs e)        {            sign = "-";            textBox1.Text = "";            flag = false;        }        private void button15_Click(object sender, EventArgs e)        {            sign = "*";            textBox1.Text = "";            flag = false;        }        private void button19_Click(object sender, EventArgs e)        {            sign = "/";            textBox1.Text = "";            flag = false;        }        private void button23_Click(object sender, EventArgs e)        {            sign = "ln";            textBox1.Text = "";            flag = false;        }        private void button22_Click(object sender, EventArgs e)        {            sign = "pow";            textBox1.Text = "";            flag = false;        }        private void button21_Click(object sender, EventArgs e)        {            sign = "sqrt";            textBox1.Text = "";            flag = false;        }        private void button20_Click(object sender, EventArgs e)        {            sign = "%";            textBox1.Text = "";            flag = false;        }        private void button18_Click(object sender, EventArgs e) // 相反数        {            sign = "bw";            textBox1.Text = "";            flag = false;        }        private void button11_Click(object sender, EventArgs e)  //小数点        {            if(textBox1.Text=="")            {                textBox1.Text = "0.";            }            else if(textBox1.Text.IndexOf(".")>=0)            {                MessageBox.Show("已经添加小数点l！", "提示");            }            else            {                textBox1.Text += ".";            }        }        private void button12_Click(object sender, EventArgs e)  // =        {            flag = true;            switch(sign)            {                case "+":                    num3 = num1 + num2;                    break;                case "-":                    num3 = num1 - num2;                    break;                case "*":                    num3 = num1 * num2;                    break;                case "/":                    {                        textBox1.Text = "";                        if(num2==0)                        {                            textBox1.Clear();                            MessageBox.Show("除数不能为0", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);                            break;                        }                        else                        {                            num3 = num1 / num2;                            break;                        }                    }                case "%":                    {                        textBox1.Text = "";                        if (num2 == 0)                        {                            textBox1.Clear();                            MessageBox.Show("除数不能为0", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);                            break;                        }                        else                        {                            num3 = num1 % num2;                            break;                        }                    }                case "bw":                    num3 = 1 / num1;                    break;                case "pow":                    num3 = Math.Pow(num1, 2);                    break;                case "ln":                    num3 = Math.Log(num1,Math.E);                    break;                case "sqrt":                    num3 = Math.Sqrt(num1);                    break;            }            textBox1.Text = num3.ToString();            num1 = num3;        }        private void button17_Click(object sender, EventArgs e)  // C         {             textBox1.Text = textBox1.Text.Substring(0, textBox1.Text.Length - 1); //字符串剪切            if(flag)            {                num1 = double.Parse(textBox1.Text);            }            else            {                num2 = double.Parse(textBox1.Text);            }        }        private void button16_Click(object sender, EventArgs e)  // CE        {            textBox1.Text = "";            num1 = 0;            num2 = 0;            num3 = 0;        }        private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)        {            System.Diagnostics.Process.Start(e.Link.LinkData.ToString());        }    }}

如有bug  还望指教！

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