用C#实现简易计算器(Windows)
通过对C#的学习,总想编个小程序试试,今天终于如愿所偿.刚开始想的时候是挺简单的,但到后来遇到的困难越来越大.关键是不知道怎么实现对数据的存储,因为只是用到一个textBox来输入数据,显示结果.
曾想在网上找到源代码,不过都没找到,有过放弃的想法,但后来一想自己的第一个程序就这么快就放弃,以后怎么学习,到最后终于把它实现了.虽然很多不足,不过对于自己的第一个程序还是比较满意的.
在本程序是用Windows应用程序实现的,用textBox,button来共同实现.
具体界面如下:
具体代码实现如下:
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace SimpleCalculator
{
/// <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.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 button0;
private System.Windows.Forms.Button buttonDot;
private System.Windows.Forms.Button buttonEqu;
private System.Windows.Forms.Button buttonPlus;
private System.Windows.Forms.Button buttonSub;
private System.Windows.Forms.Button buttonMul;
private System.Windows.Forms.Button buttonDiv;
private System.Windows.Forms.Button buttonce;
private System.Windows.Forms.Button buttonSqr;
private System.Windows.Forms.Button buttonRec;
private System.Windows.Forms.Button buttonDel;
private System.Windows.Forms.Button buttonOFF;
private System.Windows.Forms.Button buttonLOG;
private System.Windows.Forms.Button buttonEXP;
private System.Windows.Forms.Button buttonABS;
private System.Windows.Forms.Button buttonPlusAndMul;
private System.Windows.Forms.Button buttonSquare;
/// <summary>
/// 必需的设计器变量。
/// </summary>
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()
{
this.textBox1 = new System.Windows.Forms.TextBox();
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.button0 = new System.Windows.Forms.Button();
this.buttonDot = new System.Windows.Forms.Button();
this.buttonEqu = new System.Windows.Forms.Button();
this.buttonPlus = new System.Windows.Forms.Button();
this.buttonSub = new System.Windows.Forms.Button();
this.buttonMul = new System.Windows.Forms.Button();
this.buttonDiv = new System.Windows.Forms.Button();
this.buttonce = new System.Windows.Forms.Button();
this.buttonPlusAndMul = new System.Windows.Forms.Button();
this.buttonSquare = new System.Windows.Forms.Button();
this.buttonSqr = new System.Windows.Forms.Button();
this.buttonRec = new System.Windows.Forms.Button();
this.buttonDel = new System.Windows.Forms.Button();
this.buttonOFF = new System.Windows.Forms.Button();
this.buttonLOG = new System.Windows.Forms.Button();
this.buttonEXP = new System.Windows.Forms.Button();
this.buttonABS = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// textBox1
//
this.textBox1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(224)), ((System.Byte)(224)), ((System.Byte)(224)));
this.textBox1.Location = new System.Drawing.Point(24, 16);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(176, 21);
this.textBox1.TabIndex = 0;
this.textBox1.Text = "";
this.textBox1.TextAlign = System.Windows.Forms.HorizontalAlignment.Right;
//
// button1
//
this.button1.BackColor = System.Drawing.Color.Wheat;
this.button1.Location = new System.Drawing.Point(48, 72);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(32, 24);
this.button1.TabIndex = 1;
this.button1.Text = "1";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.BackColor = System.Drawing.Color.Wheat;
this.button2.Location = new System.Drawing.Point(80, 72);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(32, 24);
this.button2.TabIndex = 2;
this.button2.Text = "2";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.BackColor = System.Drawing.Color.Wheat;
this.button3.Location = new System.Drawing.Point(112, 72);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(32, 24);
this.button3.TabIndex = 3;
this.button3.Text = "3";
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// button4
//
this.button4.BackColor = System.Drawing.Color.Wheat;
this.button4.Location = new System.Drawing.Point(48, 96);
this.button4.Name = "button4";
this.button4.Size = new System.Drawing.Size(32, 24);
this.button4.TabIndex = 4;
this.button4.Text = "4";
this.button4.Click += new System.EventHandler(this.button4_Click);
//
// button5
//
this.button5.BackColor = System.Drawing.Color.Wheat;
this.button5.Location = new System.Drawing.Point(80, 96);
this.button5.Name = "button5";
this.button5.Size = new System.Drawing.Size(32, 24);
this.button5.TabIndex = 5;
this.button5.Text = "5";
this.button5.Click += new System.EventHandler(this.button5_Click);
//
// button6
//
this.button6.BackColor = System.Drawing.Color.Wheat;
this.button6.Location = new System.Drawing.Point(112, 96);
this.button6.Name = "button6";
this.button6.Size = new System.Drawing.Size(32, 24);
this.button6.TabIndex = 6;
this.button6.Text = "6";
this.button6.Click += new System.EventHandler(this.button6_Click);
//
// button7
//
this.button7.BackColor = System.Drawing.Color.Wheat;
this.button7.Location = new System.Drawing.Point(48, 120);
this.button7.Name = "button7";
this.button7.Size = new System.Drawing.Size(32, 24);
this.button7.TabIndex = 7;
this.button7.Text = "7";
this.button7.Click += new System.EventHandler(this.button7_Click);
//
// button8
//
this.button8.BackColor = System.Drawing.Color.Wheat;
this.button8.Location = new System.Drawing.Point(80, 120);
this.button8.Name = "button8";
this.button8.Size = new System.Drawing.Size(32, 24);
this.button8.TabIndex = 8;
this.button8.Text = "8";
this.button8.Click += new System.EventHandler(this.button8_Click);
//
// button9
//
this.button9.BackColor = System.Drawing.Color.Wheat;
this.button9.Location = new System.Drawing.Point(112, 120);
this.button9.Name = "button9";
this.button9.Size = new System.Drawing.Size(32, 24);
this.button9.TabIndex = 9;
this.button9.Text = "9";
this.button9.Click += new System.EventHandler(this.button9_Click);
//
// button0
//
this.button0.BackColor = System.Drawing.Color.Wheat;
this.button0.Location = new System.Drawing.Point(48, 144);
this.button0.Name = "button0";
this.button0.Size = new System.Drawing.Size(32, 24);
this.button0.TabIndex = 10;
this.button0.Text = "0";
this.button0.Click += new System.EventHandler(this.button0_Click);
//
// buttonDot
//
this.buttonDot.BackColor = System.Drawing.Color.Wheat;
this.buttonDot.Location = new System.Drawing.Point(80, 144);
this.buttonDot.Name = "buttonDot";
this.buttonDot.Size = new System.Drawing.Size(32, 24);
this.buttonDot.TabIndex = 11;
this.buttonDot.Text = ".";
this.buttonDot.Click += new System.EventHandler(this.buttonDot_Click);
//
// buttonEqu
//
this.buttonEqu.BackColor = System.Drawing.Color.Wheat;
this.buttonEqu.Location = new System.Drawing.Point(176, 120);
this.buttonEqu.Name = "buttonEqu";
this.buttonEqu.Size = new System.Drawing.Size(32, 48);
this.buttonEqu.TabIndex = 12;
this.buttonEqu.Text = "=";
this.buttonEqu.Click += new System.EventHandler(this.buttonEqu_Click);
//
// buttonPlus
//
this.buttonPlus.BackColor = System.Drawing.Color.Wheat;
this.buttonPlus.Location = new System.Drawing.Point(144, 72);
this.buttonPlus.Name = "buttonPlus";
this.buttonPlus.Size = new System.Drawing.Size(32, 24);
this.buttonPlus.TabIndex = 13;
this.buttonPlus.Text = "+";
this.buttonPlus.Click += new System.EventHandler(this.buttonPlus_Click);
//
// buttonSub
//
this.buttonSub.BackColor = System.Drawing.Color.Wheat;
this.buttonSub.Location = new System.Drawing.Point(144, 96);
this.buttonSub.Name = "buttonSub";
this.buttonSub.Size = new System.Drawing.Size(32, 24);
this.buttonSub.TabIndex = 14;
this.buttonSub.Text = "-";
this.buttonSub.Click += new System.EventHandler(this.buttonSub_Click);
//
// buttonMul
//
this.buttonMul.BackColor = System.Drawing.Color.Wheat;
this.buttonMul.Location = new System.Drawing.Point(144, 120);
this.buttonMul.Name = "buttonMul";
this.buttonMul.Size = new System.Drawing.Size(32, 24);
this.buttonMul.TabIndex = 15;
this.buttonMul.Text = "*";
this.buttonMul.Click += new System.EventHandler(this.buttonMul_Click);
//
// buttonDiv
//
this.buttonDiv.BackColor = System.Drawing.Color.Wheat;
this.buttonDiv.Location = new System.Drawing.Point(144, 144);
this.buttonDiv.Name = "buttonDiv";
this.buttonDiv.Size = new System.Drawing.Size(32, 24);
this.buttonDiv.TabIndex = 16;
this.buttonDiv.Text = "/";
this.buttonDiv.Click += new System.EventHandler(this.buttonDiv_Click);
//
// buttonce
//
this.buttonce.BackColor = System.Drawing.Color.Tomato;
this.buttonce.Location = new System.Drawing.Point(176, 72);
this.buttonce.Name = "buttonce";
this.buttonce.Size = new System.Drawing.Size(32, 48);
this.buttonce.TabIndex = 17;
this.buttonce.Text = "ON/C";
this.buttonce.Click += new System.EventHandler(this.buttonce_Click);
//
// buttonPlusAndMul
//
this.buttonPlusAndMul.BackColor = System.Drawing.Color.Wheat;
this.buttonPlusAndMul.Location = new System.Drawing.Point(112, 144);
this.buttonPlusAndMul.Name = "buttonPlusAndMul";
this.buttonPlusAndMul.Size = new System.Drawing.Size(32, 24);
this.buttonPlusAndMul.TabIndex = 18;
this.buttonPlusAndMul.Text = "+/-";
this.buttonPlusAndMul.Click += new System.EventHandler(this.buttonPlusAndMul_Click);
//
// buttonSquare
//
this.buttonSquare.BackColor = System.Drawing.Color.Wheat;
this.buttonSquare.Location = new System.Drawing.Point(16, 72);
this.buttonSquare.Name = "buttonSquare";
this.buttonSquare.Size = new System.Drawing.Size(32, 24);
this.buttonSquare.TabIndex = 19;
this.buttonSquare.Text = "X*X";
this.buttonSquare.Click += new System.EventHandler(this.buttonSquare_Click);
//
// buttonSqr
//
this.buttonSqr.BackColor = System.Drawing.Color.Wheat;
this.buttonSqr.Location = new System.Drawing.Point(16, 96);
this.buttonSqr.Name = "buttonSqr";
this.buttonSqr.Size = new System.Drawing.Size(32, 24);
this.buttonSqr.TabIndex = 20;
this.buttonSqr.Text = "Sqrt";
this.buttonSqr.Click += new System.EventHandler(this.buttonSqr_Click);
//
// buttonRec
//
this.buttonRec.BackColor = System.Drawing.Color.Wheat;
this.buttonRec.Location = new System.Drawing.Point(16, 120);
this.buttonRec.Name = "buttonRec";
this.buttonRec.Size = new System.Drawing.Size(32, 24);
this.buttonRec.TabIndex = 21;
this.buttonRec.Text = "1/X";
this.buttonRec.Click += new System.EventHandler(this.buttonRec_Click);
//
// buttonDel
//
this.buttonDel.BackColor = System.Drawing.Color.Wheat;
this.buttonDel.Location = new System.Drawing.Point(16, 144);
this.buttonDel.Name = "buttonDel";
this.buttonDel.Size = new System.Drawing.Size(32, 24);
this.buttonDel.TabIndex = 22;
this.buttonDel.Text = "→";
this.buttonDel.Click += new System.EventHandler(this.buttonDel_Click);
//
// buttonOFF
//
this.buttonOFF.BackColor = System.Drawing.Color.Tomato;
this.buttonOFF.Location = new System.Drawing.Point(112, 48);
this.buttonOFF.Name = "buttonOFF";
this.buttonOFF.Size = new System.Drawing.Size(96, 24);
this.buttonOFF.TabIndex = 27;
this.buttonOFF.Text = "OFF";
this.buttonOFF.Click += new System.EventHandler(this.buttonOFF_Click);
//
// buttonLOG
//
this.buttonLOG.BackColor = System.Drawing.Color.Wheat;
this.buttonLOG.Location = new System.Drawing.Point(16, 48);
this.buttonLOG.Name = "buttonLOG";
this.buttonLOG.Size = new System.Drawing.Size(32, 24);
this.buttonLOG.TabIndex = 28;
this.buttonLOG.Text = "LOG";
this.buttonLOG.Click += new System.EventHandler(this.buttonLOG_Click);
//
// buttonEXP
//
this.buttonEXP.BackColor = System.Drawing.Color.Wheat;
this.buttonEXP.Location = new System.Drawing.Point(48, 48);
this.buttonEXP.Name = "buttonEXP";
this.buttonEXP.Size = new System.Drawing.Size(32, 24);
this.buttonEXP.TabIndex = 29;
this.buttonEXP.Text = "EXP";
this.buttonEXP.Click += new System.EventHandler(this.buttonEXP_Click);
//
// buttonABS
//
this.buttonABS.BackColor = System.Drawing.Color.Wheat;
this.buttonABS.Location = new System.Drawing.Point(80, 48);
this.buttonABS.Name = "buttonABS";
this.buttonABS.Size = new System.Drawing.Size(32, 24);
this.buttonABS.TabIndex = 30;
this.buttonABS.Text = "ABS";
this.buttonABS.Click += new System.EventHandler(this.buttonABS_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.BackColor = System.Drawing.Color.Wheat;
this.ClientSize = new System.Drawing.Size(224, 182);
this.Controls.Add(this.buttonABS);
this.Controls.Add(this.buttonEXP);
this.Controls.Add(this.buttonLOG);
this.Controls.Add(this.buttonOFF);
this.Controls.Add(this.buttonDel);
this.Controls.Add(this.buttonRec);
this.Controls.Add(this.buttonSqr);
this.Controls.Add(this.buttonSquare);
this.Controls.Add(this.buttonPlusAndMul);
this.Controls.Add(this.buttonce);
this.Controls.Add(this.buttonDiv);
this.Controls.Add(this.buttonMul);
this.Controls.Add(this.buttonSub);
this.Controls.Add(this.buttonPlus);
this.Controls.Add(this.buttonEqu);
this.Controls.Add(this.buttonDot);
this.Controls.Add(this.button0);
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.textBox1);
this.Name = "Form1";
this.Text = "简易计算器";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);
}
#endregion
private double data1=0.0;
private double data2=0.0;
private bool flag=false;
private bool flag1=false;
private int Operator=0;
private int Operator1=0;
private void Form1_Load(object sender, System.EventArgs e)
{
}
#region DataButtonClick
private void DataButtonClick(int temp)
{
if(flag)
{
if(flag1)
{
textBox1.Text="";
flag1=false;
}
data2=double.Parse(textBox1.Text+temp.ToString());
textBox1.Text=data2.ToString();
}
else
{
data1=double.Parse(textBox1.Text+temp.ToString());
textBox1.Text=data1.ToString();
}
}
private void button0_Click(object sender, System.EventArgs e)
{
DataButtonClick(0);
}
private void button1_Click(object sender, System.EventArgs e)
{
DataButtonClick(1);
}
private void button2_Click(object sender, System.EventArgs e)
{
DataButtonClick(2);
}
private void button3_Click(object sender, System.EventArgs e)
{
DataButtonClick(3);
}
private void button4_Click(object sender, System.EventArgs e)
{
DataButtonClick(4);
}
private void button5_Click(object sender, System.EventArgs e)
{
DataButtonClick(5);
}
private void button6_Click(object sender, System.EventArgs e)
{
DataButtonClick(6);
}
private void button7_Click(object sender, System.EventArgs e)
{
DataButtonClick(7);
}
private void button8_Click(object sender, System.EventArgs e)
{
DataButtonClick(8);
}
private void button9_Click(object sender, System.EventArgs e)
{
DataButtonClick(9);
}
#endregion
#region OperatorButtonClick
private void OperatoButtonClick()
{
switch (Operator)
{
case 1:
data1+=data2;
break;
case 2:
data1-=data2;
break;
case 3:
data1*=data2;
break;
case 4:
if(data2==0)
{
textBox1.Text="!无法被0除";
}
data1/=data2;
break;
case 5:
data1=data1;
break;
default:
data1=double.Parse(textBox1.Text.ToString());
break;
}
textBox1.Text=data1.ToString();
flag=true;
flag1=true;
}
//"+"的运算
private void buttonPlus_Click(object sender, System.EventArgs e)
{
OperatoButtonClick();
Operator=1;
Operator1=1;
}
//"-"的运算
private void buttonSub_Click(object sender, System.EventArgs e)
{
OperatoButtonClick();
Operator=2;
Operator1=2;
}
//"*"的运算
private void buttonMul_Click(object sender, System.EventArgs e)
{
OperatoButtonClick();
Operator=3;
Operator1=3;
}
//"/"的运算
private void buttonDiv_Click(object sender, System.EventArgs e)
{
OperatoButtonClick();
Operator=4;
Operator1=4;
}
//"="的运算
private void buttonEqu_Click(object sender, System.EventArgs e)
{
//连续两次输入"="
if(Operator==5)
{
if(Operator1==1)
data1+=data2;
else if(Operator1==2)
data1-=data2;
else if(Operator1==3)
data1*=data2;
else if(Operator1==4)
data1/=data2;
textBox1.Text=data1.ToString();
flag=true;
flag1=true;
}
else
OperatoButtonClick();
Operator=5;
}
#endregion
//复位
private void buttonce_Click(object sender, System.EventArgs e)
{
textBox1.Text="";
data1=data2=0.0;
flag=false;
flag1=false;
}
private void buttonDot_Click(object sender, System.EventArgs e)
{
char [] str=textBox1.Text.ToCharArray();
for(int i=0;i<str.Length;i++)
if(str[i]=='.')
{
textBox1.Text="#########";
this.Close();
}
textBox1.Text=textBox1.Text+buttonDot.Text;
}
private void buttonSquare_Click(object sender, System.EventArgs e)
{
data1=data1*data1;
textBox1.Text=data1.ToString();
}
private void buttonSqr_Click(object sender, System.EventArgs e)
{
if(data1<0)
textBox1.Text="!负数不能求平方根";
data1=Math.Sqrt(data1);
textBox1.Text=data1.ToString();
}
private void buttonRec_Click(object sender, System.EventArgs e)
{
if(data1==0)
textBox1.Text="0不可以求倒数";
data1=1/data1;
textBox1.Text=data1.ToString();
}
private void buttonDel_Click(object sender, System.EventArgs e)
{
string str =textBox1.Text;
textBox1.Text="";
for(int i=0;i<str.Length-1;i++)
{
char ch=str[i];
textBox1.Text =textBox1.Text+ch.ToString();
}
}
private void buttonPlusAndMul_Click(object sender, System.EventArgs e)
{
data1=0-data1;
textBox1.Text=data1.ToString();
}
private void buttonOFF_Click(object sender, System.EventArgs e)
{
this.Close();
}
private void buttonLOG_Click(object sender, System.EventArgs e)
{
if(data1<0)
textBox1.Text="!负数不能计算对数";
textBox1.Text=Convert.ToString(Math.Log(data1));
}
private void buttonEXP_Click(object sender, System.EventArgs e)
{
textBox1.Text=Convert.ToString(Math.Exp(data1));
}
private void buttonABS_Click(object sender, System.EventArgs e)
{
textBox1.Text=Convert.ToString(Math.Abs(data1));
}
}
}
本程序可以实现简单的加,减,乘,除 ,平方求倒,LOG,EXP等简单的操作,同样通过Math可以实现其他的.
由于水平有限,本程序有不少的不足和缺点,望多多指教!
下载用运行文件请到https://files.cnblogs.com/zhaozhan/SimpleCalculator1.rar
