C# WPF 프로그래밍 계산기(Calculator) 프로그램 만들기 - layout 추가(계산 과정, 히스토리 기능 추가)

Language/C# WPF Programming / / 2019. 5. 8.
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안녕하세요, 츄르 사려고 코딩하는 집사, 코집사입니다.

이번 글은 계산기를 만들었던 것에 계산 과정과 히스토리 기능을 추가했습니다.

이 글을 다음으로, 여러 연산 계산과 우선순위에 따른 계산을 추가하려고 합니다.

 

1. XAML 소스 코드

<Window x:Class="cal.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:local="clr-namespace:cal"

mc:Ignorable="d"

Title="MainWindow" Height="704.93" Width="700">

<Grid HorizontalAlignment="Left" Width="700" Margin="0,0,-5,-1">

<Grid.RowDefinitions>

<RowDefinition Height="200"/>

<RowDefinition Height="75"/>

<RowDefinition Height="75"/>

<RowDefinition Height="75"/>

<RowDefinition Height="75"/>

<RowDefinition Height="75"/>

<RowDefinition Height="75"/>

</Grid.RowDefinitions>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="100"/>

<ColumnDefinition Width="100"/>

<ColumnDefinition Width="100"/>

<ColumnDefinition Width="100"/>

<ColumnDefinition Width="390"/>

</Grid.ColumnDefinitions>

<ListView x:Name="liststate"

BorderBrush="Gray"

Grid.Column="4"

Grid.RowSpan="7" Margin="0,0,110,-8">

 

</ListView>

<Label x:Name="result2"

Grid.ColumnSpan="4"

Grid.Row="0"

HorizontalContentAlignment="Right"

VerticalContentAlignment="Top"

FontSize="30"

Foreground="Gray"/>

<Label x:Name="resultLabel"

Content="0"

Grid.ColumnSpan="4"

Grid.Row="0"

HorizontalContentAlignment="Right"

VerticalContentAlignment="Bottom"

FontSize="100"/>

 

<!-- 숫자 버튼 0 -->

<Button x:Name="ZeroButton"

Grid.Column="0"

Grid.Row="6"

Content="0"

Margin="5,5,5,-13"

Grid.ColumnSpan="2"

Foreground="white"

Background="Gray"

FontSize="30"

Click="numberButton_Click"/>

 

<!-- 숫자 버튼 1 -->

<Button x:Name="OneButton"

Grid.Column="0"

Grid.Row="5"

Content="1"

Foreground="white"

Background="Gray"

Margin="5,5,5,5"

FontSize="30"

Click="numberButton_Click"/>

 

<!-- 숫자 버튼 2 -->

<Button x:Name="TwoButton"

Grid.Column="1"

Grid.Row="5"

Content="2"

Foreground="white"

Background="Gray"

Margin="5,5,5,5"

FontSize="30"

Click="numberButton_Click"/>

 

<!-- 숫자 버튼 3 -->

<Button x:Name="ThreeButton"

Grid.Column="2"

Grid.Row="5"

Content="3"

Foreground="white"

Background="Gray"

Margin="5,5,5,5"

FontSize="30"

Click="numberButton_Click"/>

 

<!-- 숫자 버튼 4 -->

<Button x:Name="FourButton"

Grid.Column="0"

Grid.Row="4"

Content="4"

Foreground="white"

Background="Gray"

Margin="5,5,5,5"

FontSize="30"

Click="numberButton_Click"/>

 

<!-- 숫자 버튼 5 -->

<Button x:Name="FiveButton"

Grid.Column="1"

Grid.Row="4"

Content="5"

Foreground="white"

Background="Gray"

Margin="5,5,5,5"

FontSize="30"

Click="numberButton_Click"/>

 

<!-- 숫자 버튼 6 -->

<Button x:Name="SixButton"

Grid.Column="2"

Grid.Row="4"

Content="6"

Foreground="white"

Background="Gray"

Margin="5,5,5,5"

FontSize="30"

Click="numberButton_Click"/>

 

<!-- 숫자 버튼 7 -->

<Button x:Name="SevenButton"

Grid.Column="0"

Grid.Row="3"

Content="7"

Foreground="white"

Background="Gray"

Margin="5,5,5,5"

FontSize="30"

Click="numberButton_Click"/>

 

<!-- 숫자 버튼 8 -->

<Button x:Name="EightButton"

Grid.Column="1"

Grid.Row="3"

Content="8"

Foreground="white"

Background="Gray"

FontSize="30"

Margin="5,5,5,5"

Click="numberButton_Click"/>

 

<!-- 숫자 버튼 9 -->

<Button x:Name="NineButton"

Grid.Column="2"

Grid.Row="3"

Content="9"

Foreground="white"

Background="Gray"

Margin="5,5,5,5"

FontSize="30"

Click="numberButton_Click"/>

 

<!--연산버튼 AC-->

<Button x:Name="AcButton"

Grid.Column="0"

Grid.Row="2"

Content="AC"

FontSize="30"

Margin="5,5,5,5"

Click="AcButton_Click"/>

 

<!-- 연산버튼 Plus/Minus -->

<Button x:Name="PlusMinusButton"

Grid.Column="1"

Grid.Row="2"

Content="+/-"

FontSize="30"

Margin="5,5,5,5"

Click="PlusMinusButton_Click"/>

 

<!-- 연산버튼 Percent -->

<Button x:Name="PercentButton"

Grid.Column="2"

Grid.Row="2"

Content="%"

FontSize="30"

Margin="5,5,5,5"

Click="PercentButton_Click"/>

 

<!-- 연산버튼 Divide -->

<Button x:Name="DivideButton"

Grid.Column="3"

Grid.Row="2"

Content="/"

Background="Green"

Margin="5,5,5,5"

FontSize="30"

Click="operationButton_Click"/>

 

<!-- 연산버튼 Multiple -->

<Button x:Name="MultipleButton"

Grid.Column="3"

Grid.Row="3"

Content="*"

Background="Green"

Margin="5,5,5,5"

FontSize="30"

Click="operationButton_Click"/>

 

<!-- 연산버튼 Minus -->

<Button x:Name="MinusButton"

Grid.Column="3"

Grid.Row="4"

Content="-"

Background="Green"

Margin="5,5,5,5"

FontSize="30"

Click="operationButton_Click"/>

 

<!-- 연산버튼 Plus -->

<Button x:Name="PlusButton"

Grid.Column="3"

Grid.Row="5"

Content="+"

Background="Green"

Margin="5,5,5,5"

FontSize="30"

Click="operationButton_Click"/>

 

<!-- 연산버튼 Dot -->

<Button x:Name="DotButton"

Grid.Column="2"

Grid.Row="6"

Content="."

Foreground="white"

Background="Gray"

FontSize="30"

Margin="5,5,5,-13"

Click="DotButton_Click"/>

 

<!-- 연산버튼 Equl -->

<Button x:Name="EqulButton"

Grid.Column="3"

Grid.Row="6"

Content="="

Background="Green"

Margin="5,5,5,-13"

FontSize="30"

Click="EqulButton_Click"/>

 

<!-- 연산버튼 Delete -->

<Button x:Name="DelButton"

Grid.Column="0"

Grid.Row="1"

Content="Del"

Margin="5,5,5,5"

FontSize="30"

Click="ExtraFunction_Click"/>

 

<!-- 연산버튼 Sqrt -->

<Button x:Name="SqrtButton"

Grid.Column="1"

Grid.Row="1"

Content="Sqrt"

Margin="5,5,5,5"

FontSize="30"

Click="ExtraFunction_Click"/>

 

<!-- 연산버튼 X^2 -->

<Button x:Name="XXButton"

Grid.Column="2"

Grid.Row="1"

Content="X^2"

Margin="5,5,5,5"

FontSize="30"

Click="ExtraFunction_Click"/>

 

<!-- 연산버튼 1/x -->

<Button x:Name="reverseXButton"

Grid.Column="3"

Grid.Row="1"

Content="1/x"

Margin="5,5,5,5"

FontSize="30"

Click="ExtraFunction_Click"/>

</Grid>

</Window>

 

 

 

2. 이벤트 함수 소스 코드

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;

namespace cal
{
    /// 
    /// MainWindow.xaml에 대한 상호 작용 논리
    /// 
    public partial class MainWindow : Window
    {
        double lastNumber;
        double temp = 0;
        SelectedOperator selectedOperator;
        double result;
        int flag = 0;
        int flag2 = 0;

        public MainWindow()
        {
            InitializeComponent();
            //각 버튼에 대한 이벤트 함수를 안만들고 아래와 같이 해도 상관 없음.
            //AcButton.Click += AcButton_Click;
        }
        public enum SelectedOperator
        {
            Addition,
            Subtraction,
            Multiplication,
            Division
        }
        
        public class SimpleMath
        {
            public static double Add(double n1, double n2)
            {
                return n1 + n2;
            }
            public static double Subtract(double n1, double n2)
            {
                return n1 - n2;
            }
            public static double Multiple(double n1, double n2)
            {
                return n1 * n2;
            }
            public static double Divide(double n1, double n2)
            {
                if(n2==0)
                {
                    MessageBox.Show("0으로 나눌 수 없습니다.", "Wrong Operation",
                        MessageBoxButton.OK, MessageBoxImage.Error);
                }
                return n1 / n2;
            }
        }

        // 숫자 버튼 이벤트 함수 
        private void numberButton_Click(object sender, RoutedEventArgs e)
        {
            int selectedValue = 0;
            if (sender == ZeroButton)
            {
                selectedValue = 0;
                if (resultLabel.Content.ToString() == "0")
                {
                    resultLabel.Content = selectedValue.ToString();
                }
                else
                {
                    resultLabel.Content += selectedValue.ToString();
                }
            }
            if (sender == OneButton)
            {
                selectedValue = 1;
                if (resultLabel.Content.ToString() == "0")
                {
                    resultLabel.Content = selectedValue.ToString();
                }
                else
                {
                    resultLabel.Content += selectedValue.ToString();
                }
            }
            if (sender == TwoButton)
            {
                selectedValue = 2;
                if (resultLabel.Content.ToString() == "0")
                {
                    resultLabel.Content = selectedValue.ToString();
                }
                else
                {
                    resultLabel.Content += selectedValue.ToString();
                }
            }
            if (sender == ThreeButton)
            {
                selectedValue = 3;
                if (resultLabel.Content.ToString() == "0")
                {
                    resultLabel.Content = selectedValue.ToString();
                }
                else
                {
                    resultLabel.Content += selectedValue.ToString();
                }
            }
            if (sender == FourButton)
            {
                selectedValue = 4;
                if (resultLabel.Content.ToString() == "0")
                {
                    resultLabel.Content = selectedValue.ToString();
                }
                else
                {
                    resultLabel.Content += selectedValue.ToString();
                }
            }
            if (sender == FiveButton)
            {
                selectedValue = 5;
                if (resultLabel.Content.ToString() == "0")
                {
                    resultLabel.Content = selectedValue.ToString();
                }
                else
                {
                    resultLabel.Content += selectedValue.ToString();
                }
            }
            if (sender == SixButton)
            {
                selectedValue = 6;
                if (resultLabel.Content.ToString() == "0")
                {
                    resultLabel.Content = selectedValue.ToString();
                }
                else
                {
                    resultLabel.Content += selectedValue.ToString();
                }
            }
            if (sender == SevenButton)
            {
                selectedValue = 7;
                if (resultLabel.Content.ToString() == "0")
                {
                    resultLabel.Content = selectedValue.ToString();
                }
                else
                {
                    resultLabel.Content += selectedValue.ToString();
                }
            }
            if (sender == EightButton)
            {
                selectedValue = 8;
                if (resultLabel.Content.ToString() == "0")
                {
                    resultLabel.Content = selectedValue.ToString();
                }
                else
                {
                    resultLabel.Content += selectedValue.ToString();
                }
            }
            if (sender == NineButton)
            {
                selectedValue = 9;
                if (resultLabel.Content.ToString() == "0")
                {
                    resultLabel.Content = selectedValue.ToString();
                }
                else
                {
                    resultLabel.Content += selectedValue.ToString();
                }
            }
        }

        // Plus, Minus, Multiple, Divide 4개가 있는 이벤트 함수
        private void operationButton_Click(object sender, RoutedEventArgs e)
        {
            lastNumber = double.Parse(resultLabel.Content.ToString());
            resultLabel.Content = "0";

            if (sender == PlusButton)
            {
                selectedOperator = SelectedOperator.Addition;
                result2.Content += lastNumber + " + ";
                temp += lastNumber;
                flag2 = 1;
            }

            if (sender == MinusButton)
            {
                selectedOperator = SelectedOperator.Subtraction;
                result2.Content += lastNumber + " - ";
                if(flag2==1)
                {
                    temp += lastNumber;
                    flag = 0;
                    return;
                }
            }
            if (sender == MultipleButton)
            {
                selectedOperator = SelectedOperator.Multiplication;
                result2.Content += lastNumber + " * ";
                
            }
            if (sender == DivideButton)
            {
                selectedOperator = SelectedOperator.Division;
                result2.Content += lastNumber + " / ";
                
            }
            
        }

        private void ExtraFunction_Click(object sender, RoutedEventArgs e)
        {
            double lastNumber;
            if (sender == DelButton)
            {
                if(resultLabel.Content.ToString().Length != 1)
                {
                    resultLabel.Content = resultLabel.Content.ToString().Substring(0, resultLabel.Content.ToString().Length - 1);
                }
                else
                {
                    resultLabel.Content = "0";
                }
            }
            if (sender == SqrtButton)
            {
                if (double.TryParse(resultLabel.Content.ToString(), out lastNumber))
                {
                    if (lastNumber < 0) return;
                    else
                    {
                        lastNumber = Math.Sqrt(lastNumber);
                        resultLabel.Content = lastNumber.ToString();
                    }  
                }
            }
            if (sender==XXButton)
            {
                if(double.TryParse(resultLabel.Content.ToString(), out lastNumber))
                {
                    lastNumber = lastNumber * lastNumber;
                    resultLabel.Content = lastNumber.ToString();
                }
            }
            if (sender==reverseXButton)
            {
                
                if (double.TryParse(resultLabel.Content.ToString(), out lastNumber))
                {
                    lastNumber = 1 / lastNumber;
                    resultLabel.Content = lastNumber.ToString();
                }
            }
        }
            // AC 버튼 클릭
        private void AcButton_Click(object sender, RoutedEventArgs e)
        {
            resultLabel.Content = "0";
            flag = 0;
            flag2 = 0;
            temp = 0;
        }

        // PlusMinus 버튼 클릭
        private void PlusMinusButton_Click(object sender, RoutedEventArgs e)
        {
            double lastNumber;
            if(double.TryParse(resultLabel.Content.ToString(), out lastNumber))
            {
                lastNumber = lastNumber * -1;
                resultLabel.Content = lastNumber.ToString();    
            }
        }

        // Percent 버튼 클릭
        private void PercentButton_Click(object sender, RoutedEventArgs e)
        {
            double lastNumber;
            if (double.TryParse(resultLabel.Content.ToString(), out lastNumber))
            {
                lastNumber = lastNumber * 0.01;
                resultLabel.Content = lastNumber.ToString();
            }
        }

        // Dot 버튼 클릭
        private void DotButton_Click(object sender, RoutedEventArgs e)
        {
            Boolean a;
            a = resultLabel.Content.ToString().Contains(".");
            if (resultLabel.Content.ToString() == "0")
            {
                return;
            }
            else
            {
                if(a==false)
                {
                    resultLabel.Content += ".";
                }
            }
        }
        // Equl 버튼 클릭
        private void EqulButton_Click(object sender, RoutedEventArgs e)
        {
                double newNumber;         
                newNumber = double.Parse(resultLabel.Content.ToString()); // 연산자 후 숫자 저장          
                switch (selectedOperator)
                {
                    case SelectedOperator.Addition:
                        if (flag == 0)
                        {
                           result = SimpleMath.Add(temp, newNumber);
                           flag = 1;
                        }
                        liststate.Items.Add(result2.Content.ToString() + newNumber + " = " + result.ToString());
                        result2.Content = "";
                        break;

                    case SelectedOperator.Subtraction:
                        if (flag == 0)
                        {
                            result = SimpleMath.Subtract(temp, newNumber);
                            flag = 1;
                        }
                        liststate.Items.Add(result2.Content.ToString() + newNumber + " = " + result.ToString());
                        result2.Content = "";
                        break;

                    case SelectedOperator.Multiplication:
                        if (flag == 0)
                        {
                            result = SimpleMath.Multiple(temp, newNumber);
                            flag = 1;
                        }
                        liststate.Items.Add(result2.Content.ToString() + newNumber + " = " + result.ToString());
                        result2.Content = "";
                        break;

                    case SelectedOperator.Division:
                        if (flag == 0)
                        {
                            result = SimpleMath.Divide(temp, newNumber);
                            flag = 1;
                        }
                        liststate.Items.Add(result2.Content.ToString() + newNumber + " = " + result.ToString());
                        result2.Content = "";
                        break;
            }
            resultLabel.Content = result.ToString();
            temp = 0;
            flag2 = 0;
        }
    }
}

 

3. 결과

 

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