C#-Windows计算器

文章目录

系统功能描述
系统功能分析及实现
- （1）主窗体Form1.cs文件中的代码
- （2）主窗体Form2.cs文件中的代码
- （3）Program.cs代码

系统功能描述

Windows计算器是利用C#程序设计编写一个简易计算器程序，可以进行简单的加、减、乘、除运算，还可以实现对三角函数，对数、指数等高级运算的功能。
整个系统的功能结构图如图所示：

根据功能结构图，用户可以在窗体应用程序中，添加计算器窗体，建立windows应用程序的框架。因此，通过添加两个窗体控件Form1和Form2，分别用来表示科学计算器和普通计算器。然后用户添加Button控件，建立程序的主要界面。最后在每个按钮的代码段中，分别添加事件触发的处理代码。控件textBox1，显示输入的信息和显示处理后的结果。

系统功能分析及实现

控件表示用户和程序之间的图形化连接。控件可以提供或处理数据、接受用户输入、对事件做出响应或执行连接用户和应用程序的其他功能。窗体中的控件有很多，工具箱中的Windows窗体里包含了所有的windows标准控件。通过在属性窗口改变控件的属性可以改变控件的外观和特性。本项目需要用到以下控件：
(1) 按钮控件(Button)：在Form1窗体中，添加30个Button控件，其中有10个数字按钮，16个运算按钮，一个用于计算的等号按钮，2个用于清空的按钮。在Form2窗体中，添加17个Button控件，其中有10个数字按钮，4个运算按钮，一个用于计算的等号按钮，一个用于清空的按钮。
(2) 文本框控件(TextBox)：Form1和Form2分别添加一个TextBox控件，用于显示计算结果。
(3) 菜单栏控件(MenuStrip)：在Form1和Form2中分别添加MenuStrip控件，并修改该控件中的ToolStripMenuItem菜单项的Text属性为机型转换。该控件可以实现两个窗体之间的相互转换。

（1）主窗体Form1.cs文件中的代码

using System;
using System.Windows.Forms;
namespace Windows计算器
{public partial class Form1 : Form{private string Op;private double Op1;private double Op2;private double result;public Form1(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){}//数字键1private void BtNumber1_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "1";Op1 = System.Convert.ToDouble(textBox1.Text);            }//数字键2private void BtNumber2_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "2";Op1 = System.Convert.ToDouble(textBox1.Text);    }//数字键3private void BtNumber3_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "3";Op1 = System.Convert.ToDouble(textBox1.Text);   }//数字键4private void BtNumber4_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "4";Op1 = System.Convert.ToDouble(textBox1.Text);    }//数字键5private void BtNumber5_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "5";Op1 = System.Convert.ToDouble(textBox1.Text);    }//数字键6private void BtNumber6_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "6";Op1 = System.Convert.ToDouble(textBox1.Text);   }//数字键7private void BtNumber7_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "7";Op1 = System.Convert.ToDouble(textBox1.Text);   }//数字键8private void BtNumber8_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "8";Op1 = System.Convert.ToDouble(textBox1.Text);    }//数字键9private void BtNumber9_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "9";Op1 = System.Convert.ToDouble(textBox1.Text);    }//数字键0private void BtNumber0_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "0";Op1 = System.Convert.ToDouble(textBox1.Text);   }//加功能private void BtAdd_Click(object sender, EventArgs e){Op = "+";Op2 = Op1;textBox1.Text = "";}//减功能private void BtSubtract_Click(object sender, EventArgs e){Op = "-";Op2 = Op1;textBox1.Text = "";}//乘功能private void BtMult_Click(object sender, EventArgs e){Op = "*";Op2 = Op1;textBox1.Text = "";}//除功能private void BtDivision_Click(object sender, EventArgs e){Op = "/";Op2 = Op1;textBox1.Text = "";}  //%private void BtRemedial_Click(object sender, EventArgs e){Op = "%";Op2 = Op1;textBox1.Text = "";}//Del功能private void BtDel_Click(object sender, EventArgs e){if (textBox1.Text.Length >= 1){textBox1.Text = textBox1.Text.Substring(0, textBox1.Text.Length - 1);}if (textBox1.Text.Length == 0){ textBox1.Text = "";}             }//小数点功能private void BtComma_Click(object sender, EventArgs e){if (textBox1.Text.IndexOf(".") < 0)textBox1.Text += ((Button)sender).Text;else{}}//等于功能private void BtDebgyu_Click(object sender, EventArgs e){switch (Op){case "+":result = Op2 + Op1;break;case "-":result = Op2 - Op1;break;case "*":result = Op2 * Op1;break;case "/":if (Op2 == 0){Console.WriteLine("错误，被除数不能为0！");}else{result = Op2 / Op1;}break;case "%":result = Op2 % Op1;break;case "^":int m; double n;m = 1; n = Op2;while (m + 1 <= Op1){n = n * Op2;m++;}result = n;break;}textBox1.Text = System.Convert.ToString(result);}//sin功能private void Btsin_Click(object sender, EventArgs e){Convert.ToDouble(Op1);textBox1.Text = System.Convert.ToString(Math.Sin(Op1 * Math.PI / 180));}//con功能private void Btcos_Click(object sender, EventArgs e){Convert.ToDouble(Op1);textBox1.Text = System.Convert.ToString(Math.Cos(Op1 * Math.PI / 180));}//tan功能private void Bttan_Click(object sender, EventArgs e){Convert.ToDouble(Op1);textBox1.Text = System.Convert.ToString(Math.Tan(Op1 * Math.PI / 180));}//阶乘功能private void BtFactorial_Click(object sender, EventArgs e){int i, j;i = 1; j = 1;while (i <= Op1){j *= i;i++;}textBox1.Text = System.Convert.ToString(j);}//平方功能private void BtSquare_Click(object sender, EventArgs e){textBox1.Text = System.Convert.ToString(Op1 * Op1);}//立方功能private void BtCube_Click(object sender, EventArgs e){textBox1.Text = System.Convert.ToString(Op1 * Op1 * Op1);}//πprivate void BtPI_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + Math.PI;Op1 = System.Convert.ToDouble(textBox1.Text);}//清屏功能private void BtClear_Click(object sender, EventArgs e){textBox1.Text = "";Op = "";Op1 = 0;Op2 = 0;result = 0;}//幂运算private void BtPower_Click(object sender, EventArgs e){Op = "^";Op2 = Op1;textBox1.Text = "";}//10^xprivate void BtIndex_Click(object sender, EventArgs e){int a, b;a = 1; b = 1;while (a <= Op1){b *= 10;a++;}textBox1.Text = System.Convert.ToString(b);}//Logprivate void BtLog_Click(object sender, EventArgs e){textBox1.Text = System.Convert.ToString(Math.Log10(Op1));}//lnprivate void BtLn_Click(object sender, EventArgs e){textBox1.Text = System.Convert.ToString(Math.Log(Op1));}private void 机型转换ToolStripMenuItem_Click(object sender, EventArgs e){Form2 stu = new Form2();this.Hide();stu.ShowDialog();this.Close();}}
}

（2）主窗体Form2.cs文件中的代码

using System;
using System.Windows.Forms;
namespace Windows计算器
{public partial class Form2 : Form{private string Op;private double Op1;private double Op2;private double result;public Form2(){InitializeComponent();}private void Form2_Load(object sender, EventArgs e){}private void BtNumber1_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "1";Op1 = System.Convert.ToDouble(textBox1.Text);}private void BtNumber2_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "2";Op1 = System.Convert.ToDouble(textBox1.Text);}private void BtNumber3_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "3";Op1 = System.Convert.ToDouble(textBox1.Text);}private void BtNumber4_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "4";Op1 = System.Convert.ToDouble(textBox1.Text);}private void BtNumber5_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "5";Op1 = System.Convert.ToDouble(textBox1.Text);}private void BtNumber6_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "6";Op1 = System.Convert.ToDouble(textBox1.Text);}private void BtNumber7_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "7";Op1 = System.Convert.ToDouble(textBox1.Text);}private void BtNumber8_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "8";Op1 = System.Convert.ToDouble(textBox1.Text);}private void BtNumber9_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "9";Op1 = System.Convert.ToDouble(textBox1.Text);}private void BtNumber0_Click(object sender, EventArgs e){textBox1.Text = textBox1.Text + "0";Op1 = System.Convert.ToDouble(textBox1.Text);}private void BtComma_Click(object sender, EventArgs e){if (textBox1.Text.IndexOf(".") < 0)textBox1.Text += ((Button)sender).Text;else{}}private void BtDebgyu_Click(object sender, EventArgs e){switch (Op){case "+":result = Op2 + Op1;break;case "-":result = Op2 - Op1;break;case "*":result = Op2 * Op1;break;case "/":result = Op2 / Op1;break;               }textBox1.Text = System.Convert.ToString(result);}private void BtAdd_Click(object sender, EventArgs e){Op = "+";Op2 = Op1;textBox1.Text = "";}private void BtSubtract_Click(object sender, EventArgs e){Op = "-";Op2 = Op1;textBox1.Text = "";}private void BtMult_Click(object sender, EventArgs e){Op = "*";Op2 = Op1;textBox1.Text = "";}private void BtDivision_Click(object sender, EventArgs e){Op = "/";Op2 = Op1;textBox1.Text = "";}private void BtClear_Click(object sender, EventArgs e){textBox1.Text = "";Op = "";Op1 = 0;Op2 = 0;result = 0;}private void 机型转换ToolStripMenuItem_Click(object sender, EventArgs e){Form1 stu = new Form1();this.Hide();stu.ShowDialog();this.Close();}}
}

（3）Program.cs代码

using System;
using System.Windows.Forms;
namespace Windows计算器
{static class Program{/// <summary>/// 应用程序的主入口点。/// </summary>[STAThread]static void Main(){Application.EnableVisualStyles();Application.SetCompatibleTextRenderingDefault(false);Application.Run(new Form1());}}
}