在C#里面写一个计算器的代码谁能告诉我一下。
作者&投稿：以奚 （若有异议请与网页底部的电邮联系）
你好： 代码如下，希望对你有帮助！ private void 平方根_Click(object sender, EventArgs e) { double i = Convert.ToDouble(textBox1.Text); //将文本框的值转换为Double型 textBox1.Text = Math.Sqrt(i).ToString(); //将计算结果转换为字符串输入文本框中 } private void 平方_Click(object sender, EventArgs e) { double i = Convert.ToDouble(textBox1.Text); textBox1.Text = (i*i).ToString(); }
http://www.cnblogs.com/linshuangxi/p/3417068.html
这个网址有完整的代码，如果你想学习怎么做，它也有步骤
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices;
using System.IO;
namespace 计算器
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.Button button4;
private System.Windows.Forms.Button button5;
private System.Windows.Forms.Button button6;
private System.Windows.Forms.Button button7;
private System.Windows.Forms.Button button8;
private System.Windows.Forms.Button button9;
private System.Windows.Forms.Button button11;
private System.Windows.Forms.Button button12;
private System.Windows.Forms.Button button13;
private System.Windows.Forms.Button button14;
private System.Windows.Forms.Button button15;
private System.Windows.Forms.Button button16;
private System.Windows.Forms.Button button17;
private System.Windows.Forms.Button button10;
private System.Windows.Forms.Button button18;
private System.Windows.Forms.Button button19;
private AxWMPLib.AxWindowsMediaPlayer axWindowsMediaPlayer1;
private System.Windows.Forms.PictureBox pictureBox1;
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
this.textBox1 = new System.Windows.Forms.TextBox();
this.label1 = new System.Windows.Forms.Label();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.button4 = new System.Windows.Forms.Button();
this.button5 = new System.Windows.Forms.Button();
this.button6 = new System.Windows.Forms.Button();
this.button7 = new System.Windows.Forms.Button();
this.button8 = new System.Windows.Forms.Button();
this.button9 = new System.Windows.Forms.Button();
this.button11 = new System.Windows.Forms.Button();
this.button12 = new System.Windows.Forms.Button();
this.button13 = new System.Windows.Forms.Button();
this.button14 = new System.Windows.Forms.Button();
this.button15 = new System.Windows.Forms.Button();
this.button16 = new System.Windows.Forms.Button();
this.button17 = new System.Windows.Forms.Button();
this.button10 = new System.Windows.Forms.Button();
this.button18 = new System.Windows.Forms.Button();
this.button19 = new System.Windows.Forms.Button();
this.axWindowsMediaPlayer1 = new AxWMPLib.AxWindowsMediaPlayer();
this.pictureBox1 = new System.Windows.Forms.PictureBox();
((System.ComponentModel.ISupportInitialize)(this.axWindowsMediaPlayer1)).BeginInit();
this.SuspendLayout();
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(112, 32);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(240, 29);
this.textBox1.TabIndex = 0;
this.textBox1.Text = "";
//
// label1
//
this.label1.Font = new System.Drawing.Font("楷体_GB2312", 15F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
this.label1.Location = new System.Drawing.Point(24, 40);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(72, 40);
this.label1.TabIndex = 1;
this.label1.Text = "结果";
//
// button1
//
this.button1.Location = new System.Drawing.Point(24, 168);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(40, 32);
this.button1.TabIndex = 3;
this.button1.Text = "1";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(88, 168);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(40, 32);
this.button2.TabIndex = 4;
this.button2.Text = "2";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.Location = new System.Drawing.Point(152, 168);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(40, 32);
this.button3.TabIndex = 5;
this.button3.Text = "3";
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// button4
//
this.button4.Location = new System.Drawing.Point(24, 216);
this.button4.Name = "button4";
this.button4.Size = new System.Drawing.Size(40, 32);
this.button4.TabIndex = 6;
this.button4.Text = "4";
this.button4.Click += new System.EventHandler(this.button4_Click);
//
// button5
//
this.button5.Location = new System.Drawing.Point(88, 216);
this.button5.Name = "button5";
this.button5.Size = new System.Drawing.Size(40, 32);
this.button5.TabIndex = 7;
this.button5.Text = "5";
this.button5.Click += new System.EventHandler(this.button5_Click);
//
// button6
//
this.button6.Location = new System.Drawing.Point(152, 216);
this.button6.Name = "button6";
this.button6.Size = new System.Drawing.Size(40, 32);
this.button6.TabIndex = 8;
this.button6.Text = "6";
this.button6.Click += new System.EventHandler(this.button6_Click);
//
// button7
//
this.button7.Location = new System.Drawing.Point(24, 264);
this.button7.Name = "button7";
this.button7.Size = new System.Drawing.Size(40, 32);
this.button7.TabIndex = 9;
this.button7.Text = "7";
this.button7.Click += new System.EventHandler(this.button7_Click);
//
// button8
//
this.button8.Location = new System.Drawing.Point(88, 264);
this.button8.Name = "button8";
this.button8.Size = new System.Drawing.Size(40, 32);
this.button8.TabIndex = 10;
this.button8.Text = "8";
this.button8.Click += new System.EventHandler(this.button8_Click);
//
// button9
//
this.button9.Location = new System.Drawing.Point(152, 264);
this.button9.Name = "button9";
this.button9.Size = new System.Drawing.Size(40, 32);
this.button9.TabIndex = 11;
this.button9.Text = "9";
this.button9.Click += new System.EventHandler(this.button9_Click);
//
// button11
//
this.button11.Location = new System.Drawing.Point(152, 320);
this.button11.Name = "button11";
this.button11.Size = new System.Drawing.Size(40, 32);
this.button11.TabIndex = 13;
this.button11.Text = "=";
this.button11.Click += new System.EventHandler(this.button11_Click);
//
// button12
//
this.button12.Location = new System.Drawing.Point(152, 120);
this.button12.Name = "button12";
this.button12.Size = new System.Drawing.Size(40, 32);
this.button12.TabIndex = 14;
this.button12.Text = "/";
this.button12.Click += new System.EventHandler(this.button12_Click);
//
// button13
//
this.button13.Location = new System.Drawing.Point(208, 120);
this.button13.Name = "button13";
this.button13.Size = new System.Drawing.Size(40, 32);
this.button13.TabIndex = 15;
this.button13.Text = "*";
this.button13.Click += new System.EventHandler(this.button13_Click);
//
// button14
//
this.button14.Location = new System.Drawing.Point(208, 168);
this.button14.Name = "button14";
this.button14.Size = new System.Drawing.Size(40, 32);
this.button14.TabIndex = 16;
this.button14.Text = "-";
this.button14.Click += new System.EventHandler(this.button14_Click);
//
// button15
//
this.button15.Location = new System.Drawing.Point(208, 216);
this.button15.Name = "button15";
this.button15.Size = new System.Drawing.Size(40, 32);
this.button15.TabIndex = 17;
this.button15.Text = "+";
this.button15.Click += new System.EventHandler(this.button15_Click);
//
// button16
//
this.button16.Location = new System.Drawing.Point(24, 120);
this.button16.Name = "button16";
this.button16.Size = new System.Drawing.Size(104, 32);
this.button16.TabIndex = 18;
this.button16.Text = "播放音乐";
this.button16.Click += new System.EventHandler(this.button16_Click);
//
// button17
//
this.button17.Location = new System.Drawing.Point(208, 264);
this.button17.Name = "button17";
this.button17.Size = new System.Drawing.Size(40, 88);
this.button17.TabIndex = 19;
this.button17.Text = "C";
this.button17.Click += new System.EventHandler(this.button17_Click);
//
// button10
//
this.button10.Location = new System.Drawing.Point(24, 320);
this.button10.Name = "button10";
this.button10.Size = new System.Drawing.Size(56, 32);
this.button10.TabIndex = 20;
this.button10.Text = "0";
this.button10.Click += new System.EventHandler(this.button10_Click);
//
// button18
//
this.button18.Location = new System.Drawing.Point(304, 312);
this.button18.Name = "button18";
this.button18.Size = new System.Drawing.Size(80, 40);
this.button18.TabIndex = 21;
this.button18.Text = "关闭";
this.button18.Click += new System.EventHandler(this.button18_Click);
//
// button19
//
this.button19.Location = new System.Drawing.Point(88, 320);
this.button19.Name = "button19";
this.button19.Size = new System.Drawing.Size(40, 32);
this.button19.TabIndex = 24;
this.button19.Text = ".";
this.button19.Click += new System.EventHandler(this.button19_Click);
//
// axWindowsMediaPlayer1
//
this.axWindowsMediaPlayer1.Enabled = true;
this.axWindowsMediaPlayer1.Location = new System.Drawing.Point(272, 80);
this.axWindowsMediaPlayer1.Name = "axWindowsMediaPlayer1";
this.axWindowsMediaPlayer1.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axWindowsMediaPlayer1.OcxState")));
this.axWindowsMediaPlayer1.Size = new System.Drawing.Size(112, 168);
this.axWindowsMediaPlayer1.TabIndex = 25;
this.axWindowsMediaPlayer1.Enter += new System.EventHandler(this.axWindowsMediaPlayer1_Enter);
//
// pictureBox1
//
this.pictureBox1.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("pictureBox1.BackgroundImage")));
this.pictureBox1.Location = new System.Drawing.Point(272, 184);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(112, 104);
this.pictureBox1.TabIndex = 28;
this.pictureBox1.TabStop = false;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(10, 22);
this.BackColor = System.Drawing.SystemColors.Control;
this.ClientSize = new System.Drawing.Size(408, 398);
this.Controls.Add(this.pictureBox1);
this.Controls.Add(this.axWindowsMediaPlayer1);
this.Controls.Add(this.button19);
this.Controls.Add(this.button18);
this.Controls.Add(this.button10);
this.Controls.Add(this.button17);
this.Controls.Add(this.button16);
this.Controls.Add(this.button15);
this.Controls.Add(this.button14);
this.Controls.Add(this.button13);
this.Controls.Add(this.button12);
this.Controls.Add(this.button11);
this.Controls.Add(this.button9);
this.Controls.Add(this.button8);
this.Controls.Add(this.button7);
this.Controls.Add(this.button6);
this.Controls.Add(this.button5);
this.Controls.Add(this.button4);
this.Controls.Add(this.button3);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.label1);
this.Controls.Add(this.textBox1);
this.Font = new System.Drawing.Font("楷体_GB2312", 14.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
this.Name = "Form1";
this.Text = "计算器";
((System.ComponentModel.ISupportInitialize)(this.axWindowsMediaPlayer1)).EndInit();
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void button1_Click(object sender, System.EventArgs e)
{
Button btn=(Button)sender;
textBox1.Text+=btn.Text;
}
private void button2_Click(object sender, System.EventArgs e)
{
Button btn=(Button)sender;
textBox1.Text+=btn.Text;
}
private void button3_Click(object sender, System.EventArgs e)
{
Button btn=(Button)sender;
textBox1.Text+=btn.Text;
}
private void button4_Click(object sender, System.EventArgs e)
{
Button btn=(Button)sender;
textBox1.Text+=btn.Text;
}
private void button5_Click(object sender, System.EventArgs e)
{
Button btn=(Button)sender;
textBox1.Text+=btn.Text;
}
private void button6_Click(object sender, System.EventArgs e)
{
Button btn=(Button)sender;
textBox1.Text+=btn.Text;
}
private void button7_Click(object sender, System.EventArgs e)
{
Button btn=(Button)sender;
textBox1.Text+=btn.Text;
}
private void button8_Click(object sender, System.EventArgs e)
{
Button btn=(Button)sender;
textBox1.Text+=btn.Text;
}
private void button9_Click(object sender, System.EventArgs e)
{
Button btn=(Button)sender;
textBox1.Text+=btn.Text;
}
private void button10_Click(object sender, System.EventArgs e)
{
Button btn=(Button)sender;
textBox1.Text+=btn.Text;
}
private void button19_Click(object sender, System.EventArgs e)
{
Button btn=(Button)sender;
textBox1.Text+=btn.Text;
}
private void button12_Click(object sender, System.EventArgs e)
{
Button btn=(Button)sender;
textBox1.Text=textBox1.Text+" "+btn.Text+" ";
}
private void button13_Click(object sender, System.EventArgs e)
{
Button btn=(Button)sender;
textBox1.Text=textBox1.Text+" "+btn.Text+" ";
}
private void button14_Click(object sender, System.EventArgs e)
{
Button btn=(Button)sender;
textBox1.Text=textBox1.Text+" "+btn.Text+" ";
}
private void button15_Click(object sender, System.EventArgs e)
{
Button btn=(Button)sender;
textBox1.Text=textBox1.Text+" "+btn.Text+" ";
}
private void button16_Click(object sender, System.EventArgs e)
{
FileDialog ofDialog=new OpenFileDialog();
ofDialog.AddExtension=true;
ofDialog.CheckFileExists=true;
ofDialog.CheckPathExists=true;
ofDialog.Filter="VCD文件(*.dat)|*.dat|Audio文件(*.avi)|*.avi|WAV文件(*.wav)|*.wav|MP3文件(*.mp3)|*.mp3|所有文件(*.*)|*.*";
ofDialog.FilterIndex=4;
if(ofDialog.ShowDialog()==DialogResult.OK)
{
this.axWindowsMediaPlayer1.URL=ofDialog.FileName;
}
}
private void button17_Click(object sender, System.EventArgs e)
{
textBox1.Text="";
}
private void button18_Click(object sender, System.EventArgs e)
{
Application.Exit();
}
private void button11_Click(object sender,System.EventArgs e)
{
Single r=0;
string t=textBox1.Text;
int space = t.IndexOf(' ');
string S1=t.Substring(0,space);
char op=Convert.ToChar(t.Substring(space+1,1));
string S2=t.Substring(space+3);
Single arg1=Convert.ToSingle(S1);
Single arg2=Convert.ToSingle(S2);
switch(op)
{
case '+':
r=arg1+arg2;
break;
case '-':
r=arg1-arg2;
break;
case '*':
r=arg1*arg2;
break;
case '/':
if(arg2==0)
textBox1.Text="error!";
else
r=arg1/arg2;
break;
}
textBox1.Text=r.ToString();
}
private void axWindowsMediaPlayer1_Enter(object sender, System.EventArgs e)
{
}
}
}
刚学C#的时候做过一个计算器的～很简单，学编程的最好先不要看源码～自己做做试试看嘛～实在不行再参考一下～要源码的话，很多百度，狗狗一搜一大把～
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米脂县15290516953： 用C# 制作一个简单加减成除计算器的代码 - ？
资命阿莫： using System; using System.Collections.Generic; using System.Text; namespace shangJi { class Opreation { 加法 public float Add(float num1, float num2) { return num1 + num2; } 减法 public float Sub(float num1, float num2) { return num1 - num2;...
米脂县15290516953： 请问用C#制作计算器的程序代码是什么?急用.谢谢？
资命阿莫： 这个已经有计算功能了,但记事本还没有,给你急用.因为C没有专门的字符串类型:有事再联系405719864// C语言计算器.cpp : Defines the entry point for the console application.///*注意!本程序用C编写,在VC++6.0中运行通过,如果要有记...
米脂县15290516953： 求用C#编写的简易计算器的代码？
资命阿莫： 其实在C#中和Java中的代码都是一样的 using... ..... ////在窗体上放三个 文本框 txt1\txt2\txt3----控件的名字 一个下拉列表框 slt1---控件的名字 一个Button按钮--btnRst pulic static void main(string args[]) { ..... .... 自动生成的 } public void btnRstClick(...
米脂县15290516953： C#语言编写一个简单的加减计算器 - ？
资命阿莫： Console.Write(＂请输入第一个数字:＂); double num1 = Convert.toDouble(Console.ReadLine()); Console.Write(＂请输入运算符(+、-、*、/):＂); string p = Console.ReadLine(); Console.Write(＂请输入第二个数字:＂); double ...
米脂县15290516953： 速求!怎样用C#编写一个简单的计算器??? - ？
资命阿莫： 在运行里输入calc然后模仿:1会基本的c#写winform程序2 用一个static 变量记录最后一个按钮的输入符号3当2之后输入数字后只要接收运算符号就计算并显示如果你只是想要一个计...
米脂县15290516953： 用C#编写一个简易计算器,麻烦把程序写出来. - ？
资命阿莫： 同学,给你写了一个方法,你自己设计窗体写到单击事件里去吧.这里不建议用switch语句,因为这样写会很繁琐,代码可读性很差.private float getpersonalpay(float salary) { int temp=(salary-3500) / 1500; if(temp { return (salary-3500)*3; } else if(...
米脂县15290516953： 用c#语言编写一个计算器,只实现加减乘除.哪位朋友能帮忙解答一下!感激不尽! - ？
资命阿莫： /* 计算器算法 当每次安1~9的数字按键,调用一个anniu方法,在aniu方法 用是否输入运算符来判断是否是输入的是 第一个第二个值,中间在判断是否是小数的数值算法.普通值的算法是 a=a*10+i; i为传入的参数的值 小数值的算法是 a=a+i/s; s=...
