C#实现计算器窗体程序
作者:羽路星尘
这篇文章主要为大家详细介绍了C#实现计算器窗体程序,文中示例代码介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们可以参考一下
本文实例为大家分享了C#实现计算器窗体程序的具体代码,供大家参考,具体内容如下
功能设计
1、计算器中,添加 0-9 共十个数字键。
2、计算器中,增添 加、减、乘、除、等于五个功能键。
3、计算器中,增加四个功能键:x2,sqrt,log, ln 四个键,分别计算求平方,开方。
实现代码
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 test3_1 { public partial class Form1 : Form { double result = 0; //存储计算结果 double number = 0; //存储输入的数字 bool exist_value = false; //判断文本框中是否有值 string operation; //存储输入的运算符 /* * 初始化 */ public Form1() { InitializeComponent(); } /* * 数字键触发事件实现 */ private void Seven_Click(object sender, EventArgs e) { if (exist_value == true) { textBox1.Text = ""; exist_value = false; } textBox1.Text += "7"; } private void Eight_Click(object sender, EventArgs e) { if (exist_value == true) { textBox1.Text = ""; exist_value = false; } textBox1.Text += "8"; } private void Nine_Click(object sender, EventArgs e) { if (exist_value == true) { textBox1.Text = ""; exist_value = false; } textBox1.Text += "9"; } private void Four_Click(object sender, EventArgs e) { if (exist_value == true) { textBox1.Text = ""; exist_value = false; } textBox1.Text += "4"; } private void Five_Click(object sender, EventArgs e) { if (exist_value == true) { textBox1.Text = ""; exist_value = false; } textBox1.Text += "5"; } private void Six_Click(object sender, EventArgs e) { if (exist_value == true) { textBox1.Text = ""; exist_value = false; } textBox1.Text += "6"; } private void One_Click(object sender, EventArgs e) { if (exist_value == true) { textBox1.Text = ""; exist_value = false; } textBox1.Text += "1"; } private void Two_Click(object sender, EventArgs e) { if (exist_value == true) { textBox1.Text = ""; exist_value = false; } textBox1.Text += "2"; } private void Three_Click(object sender, EventArgs e) { if (exist_value == true) { textBox1.Text = ""; exist_value = false; } textBox1.Text += "3"; } private void Zero_Click(object sender, EventArgs e) { if (exist_value == true) { textBox1.Text = ""; exist_value = false; } textBox1.Text += "0"; } /* * 功能键触发事件 */ private void 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 { exist_value = true; number = double.Parse(textBox1.Text); operation = "+"; } } private void Sub_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 { exist_value = true; number = double.Parse(textBox1.Text); operation = "-"; } } private void Mul_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 { exist_value = true; number = double.Parse(textBox1.Text); operation = "*"; } } private void Div_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 { exist_value = true; number = double.Parse(textBox1.Text); operation = "/"; } } private void Squ_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 { exist_value = true; number = double.Parse(textBox1.Text); operation = "x^2"; } } private void 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 { exist_value = true; number = double.Parse(textBox1.Text); operation = "sqrt"; } } private void 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 { exist_value = true; number = double.Parse(textBox1.Text); operation = "log"; } } private void 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 { exist_value = true; number = double.Parse(textBox1.Text); operation = "ln"; } } private void Del_Click(object sender, EventArgs e) { textBox1.Text = ""; } private void Equ_Click(object sender, EventArgs e) { switch (operation) { case "+": result = number + double.Parse(textBox1.Text); break; case "-": result = number - double.Parse(textBox1.Text); break; case "*": result = number * double.Parse(textBox1.Text); break; case "/": { double temp=double.Parse(textBox1.Text); if (temp != 0) result = number / temp; else MessageBox.Show("除数不能为零", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); break; } case "x^2": result = number * number; break; case "sqrt": result = Math.Sqrt(number); break; case "log": result = Math.Log10(number); break; case "ln": result = Math.Log(number); break; } textBox1.Text = result + ""; exist_value = true; } } }
界面设计
运行结果
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。