C#——简单的计算器（仿Windows 10计算器）

问题描述

运用WPF技术，模仿Windows 10系统中计算机器（Calculator）程序，开发一个类似程序。

问题分析

注： 

• MS：记忆当前显示的数字（Memory Save）
• MC：清除记忆的数字（Memory Clean）
• MR：显示记忆的数字（Memory Recall）
• M-：记忆的数字减去当前数字，并保存
• M+：记忆的数字加上当前数字，并保存

解决方案 

创建WPF应用

 

UI设计

 Metro风格来美化：https://www.cnblogs.com/ouyangkai/p/12759466.html

App.xaml 

 MainWindow.xaml

    
        
            
                
            
        
        
        
            
                
                    
                    
                    
                    
                
            
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
        
            
                
                    历史记录
                
                
                    
                        

                        
                    
                    
                        全部清空
                    
                
            
            
                
                
            
        

        
            
        
    

逻辑设计 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using MahApps.Metro.Controls;
using System.Windows.Controls.Primitives;

namespace Homework19
{
    /// 

    /// MainWindow.xaml 的交互逻辑
    /// 
    public partial class MainWindow : MetroWindow
    {
        public MainWindow()
        {
            InitializeComponent();
            B_MC.IsEnabled = false;
            B_M__1.IsEnabled = false;
            B_M__.IsEnabled = false;
            B_MR.IsEnabled = false;
            
        }

        //temp用于临时存储操作数，oper存储最近一次的运算符
        private double temp, op1, op2, memory, result;
        private string history=null,oper = null;
        //next用来表示是否要输入新的操作数
        private bool next;

        //连续计算时先计算前面的结果
        private void Aut()
        {
            op2 = Convert.ToDouble(Out_1.Text);
            switch (oper)
            {
                case "+":
                    result = op1 + op2;
                    break;
                case "-":
                    result = op1 - op2;
                    break;
                case "×":
                    result = op1 * op2;
                    break;
                case "÷":
                    result = op1 / op2;
                    break;
                default:
                    break;

            }
            Out_1.Text = Convert.ToString(result);
            //Out_2.Text = Convert.ToString(result);
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            //目标
            this.contextMenu.PlacementTarget = this.btnMenu;
            //位置
            this.contextMenu.Placement = PlacementMode.Top;
            //显示菜单
            this.contextMenu.IsOpen = true;
        }
        private void B_NUM_Click(object sender, RoutedEventArgs e)
        {
            Button numBtn = sender as Button;
            string numstr = numBtn.Content.ToString();
            if (numstr != "0")
            {
                if (Out_1.Text == "0" || next)
                {
                    Out_1.Text = numstr;
                    if (next)
                    {
                        next = false;
                    }
                }
                else
                    Out_1.Text += numstr;
            }
            else {
                if (Out_1.Text != "0")
                {
                    Out_1.Text += "0";
                }
                if (next)
                {
                    Out_1.Text = "0";
                    next = false;
                }
            }
        }

        private void B_C_Click(object sender, RoutedEventArgs e)
        {
            Out_1.Text = "0";
            Out_2.Text = "";
            oper = null;
        }

        private void B_CE_Click(object sender, RoutedEventArgs e)
        {
            Out_1.Text = "0";
            Out_2.Text = "";
            oper = null;
        }
        
        private void operater_Button_Click(object sender, RoutedEventArgs e)
        {
            Button operaterBtn = sender as Button;
            string operater = operaterBtn.Content.ToString();
            Out_2.Text += Out_1.Text + operater;
            if (oper != null)
            {
                Aut();
            }
            op1 = Convert.ToDouble(Out_1.Text);
            oper = operater;
            next = true;
        }

        private void B_delete_Click(object sender, RoutedEventArgs e)
        {
            if (!next)
            {
                if (Out_1.Text.Length == 1)
                {
                    Out_1.Text = "0";
                }
                else
                {
                    Out_1.Text = Out_1.Text.Substring(0, Out_1.Text.Length - 1);
                }
            }
        }

        private void B_reciprocal_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                temp = Convert.ToDouble(Out_1.Text);
                temp = 1 / temp;
                Out_1.Text = Convert.ToString(temp);
            }
            catch (Exception ee)
            {
                Out_1.Text = "除数不能为0";
            }
        }

        private void B_sq_Click(object sender, RoutedEventArgs e)
        {
            temp = Convert.ToDouble(Out_1.Text);
            temp = Math.Pow(temp, 2);
            Out_1.Text = Convert.ToString(temp);
        }

        private void B_cu_Click(object sender, RoutedEventArgs e)
        {
            temp = Convert.ToDouble(Out_1.Text);
            temp = Math.Pow(temp, 3);
            Out_1.Text = Convert.ToString(temp);
        }

        private void B_radical_Click(object sender, RoutedEventArgs e)
        {
            temp = Convert.ToDouble(Out_1.Text);
            temp = Math.Pow(temp, 0.5);
            Out_1.Text = Convert.ToString(temp);
        }

        private void B_per_Click(object sender, RoutedEventArgs e)
        {
            temp = Convert.ToDouble(Out_1.Text);
            temp = temp / 100;
            Out_1.Text = Convert.ToString(temp);
        }

        private void B_MR_Click(object sender, RoutedEventArgs e)
        {
            Out_1.Text = Convert.ToString(memory);
        }

        private void B_M__1_Click(object sender, RoutedEventArgs e)
        {
            memory += Convert.ToDouble(Out_1.Text);
        }

        private void B_M___Click(object sender, RoutedEventArgs e)
        {
            memory -= Convert.ToDouble(Out_1.Text);
        }

        private void B_MC_Click(object sender, RoutedEventArgs e)
        {
            memory = 0;
            B_MC.IsEnabled = false;
            B_M__1.IsEnabled = false;
            B_M__.IsEnabled = false;
            B_MR.IsEnabled = false;
        }

        private void B_MS_Click(object sender, RoutedEventArgs e)
        {
            memory = Convert.ToDouble(Out_1.Text);
            B_MC.IsEnabled = true;
            B_M__1.IsEnabled = true;
            B_M__.IsEnabled = true;
            B_MR.IsEnabled = true;
        }

        private void clear_Btn_Click(object sender, RoutedEventArgs e)
        {
            historyPanel.Children.Clear();
        }

        private void B_eq_Click(object sender, RoutedEventArgs e)
        {
            op2 = Convert.ToDouble(Out_1.Text);
            switch (oper)
            {
                case "+":
                    result = op1 + op2;
                    break;
                case "-":
                    result = op1 - op2;
                    break;
                case "×":
                    result = op1 * op2;
                    break;
                case "÷":
                    result = op1 / op2;
                    break;
                default:
                    break;

            }
            oper = null;
            history = Out_2.Text + Out_1.Text + "=";
            Out_1.Text = Convert.ToString(result);
            Out_2.Text = "";
            Add_History(history, Convert.ToString(result));
        }

        private void B_opp_Click(object sender, RoutedEventArgs e)
        {
            temp = Convert.ToDouble(Out_1.Text);
            if (temp != 0)
            {
                temp = 0 - temp;
            }
            Out_1.Text = Convert.ToString(temp);
        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            Out_1.Text += ".";
        }

        private void Add_History(string cal, string result){
            Border border = new Border();
            border.CornerRadius = new CornerRadius(5);
            border.Background = new SolidColorBrush(Colors.White);
            border.BorderBrush = new SolidColorBrush(Colors.LightGray);
            border.BorderThickness = new Thickness(1);
            border.Height = 100;
            Grid gird = new Grid();
            TextBlock textBlock1 = new TextBlock();
            textBlock1.HorizontalAlignment = HorizontalAlignment.Left; 
            textBlock1.Margin = new Thickness(10, 10, 0, 0); 
            textBlock1.TextWrapping = TextWrapping.Wrap;
            textBlock1.Text = cal;
            textBlock1.VerticalAlignment = VerticalAlignment .Top;
            textBlock1.Width = 260;
            textBlock1.Height = 28;
            textBlock1.TextAlignment = TextAlignment.Right;
            textBlock1.FontSize = 24;
            TextBlock textBlock2 = new TextBlock();
            textBlock2.HorizontalAlignment = HorizontalAlignment.Left;
            textBlock2.Margin = new Thickness(10, 30, 0, 0);
            textBlock2.TextWrapping = TextWrapping.Wrap;
            textBlock2.Text = result;
            textBlock2.VerticalAlignment = VerticalAlignment.Top;
            textBlock2.Width = 260;
            textBlock2.Height = 64;
            textBlock2.TextAlignment = TextAlignment.Right;
            textBlock2.FontSize = 54;
            textBlock2.FontFamily = new FontFamily("Microsoft YaHei");
            gird.Children.Add(textBlock1);
            gird.Children.Add(textBlock2);
            border.Child = gird;
            historyPanel.Children.Add(border);
        }
    }
}

运行结果

 

参考项目

Windows 10 计算器 C++源代码 

https://github.com/Microsoft/calculator

仿Windows 10 计算器 C#源代码 

https://github.com/BuXianShan/Calculator

参考文章

https://blog.csdn.net/weixin_43272781/article/details/106750837

https://blog.csdn.net/qq_43479622/article/details/91599602

https://blog.csdn.net/OneWord233/article/details/80755284

https://www.cnblogs.com/lonelyxmas/p/12117453.html

https://blog.csdn.net/weixin_42009898/article/details/80921151

https://www.cnblogs.com/ouyangkai/p/12759466.html