C# WPF 계산기

WPF로 설계한 일반계산기...

소스  (xaml)

<Window x:Class="WPF_calc.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="WPF_calc" Height="310" Width="232" ResizeMode="NoResize" Background="#FFDDE7F3">

    <StackPanel>
            <Grid>
                <TextBox Height="55" Margin="10" Name="txtResult" BorderBrush="#FF93A5B1">
                <TextBox.Background>
                    <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                        <GradientStop Color="#FFE5EFFA" Offset="0" />
                        <GradientStop Color="White" Offset="1" />
                    </LinearGradientBrush>
                </TextBox.Background>
            </TextBox>
                <TextBlock Margin="15" VerticalAlignment="Bottom" Name="memDisp"></TextBlock>  <!--Memory 표시(왼쪽 아래)-->
                <TextBlock Margin="15" HorizontalAlignment="Right" Name="expDisp"></TextBlock>   <!--수식 표시(오른쪽 위)-->
            </Grid>    
 
            <Grid Margin="5,0,10,0" DataContext="{Binding}">
                <Grid.RowDefinitions>
                    <RowDefinition/>
                    <RowDefinition/>
                    <RowDefinition/>
                    <RowDefinition/>
                    <RowDefinition/>
                    <RowDefinition/>
                </Grid.RowDefinitions>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition/>
                    <ColumnDefinition/>
                    <ColumnDefinition/>
                    <ColumnDefinition/>
                    <ColumnDefinition/>
                </Grid.ColumnDefinitions>
                <Button Grid.Row="0" Grid.Column="0" Margin="5,0,0,5" Name="btnMC" Click="btnMC_Click">MC</Button>
                <Button Grid.Row="0" Grid.Column="1" Margin="5,0,0,5" Name="btnMR" Click="btnMR_Click">MR</Button>
                <Button Grid.Row="0" Grid.Column="2" Margin="5,0,0,5" Name="btnMS" Click="btnMS_Click">MS</Button>
                <Button Grid.Row="0" Grid.Column="3" Margin="5,0,0,5" Name="btnMPlus" Click="btnMPlus_Click">M+</Button>
                <Button Grid.Row="0" Grid.Column="4" Margin="5,0,0,5" Name="btnMMinus" Click="btnMMinus_Click">M-</Button>

                <Button Grid.Row="1" Grid.Column="0" Margin="5,0,0,5" Name="btnBS" Click="btnBS_Click">←</Button>
                <Button Grid.Row="1" Grid.Column="1" Margin="5,0,0,5" Name="btnCE" Click="btnCE_Click">CE</Button>
                <Button Grid.Row="1" Grid.Column="2" Margin="5,0,0,5" Name="btnC" Click="btnC_Click">C</Button>
                <Button Grid.Row="1" Grid.Column="3"  Margin="5,0,0,5" Name="btnPlusMinus" Click="btnPlusMinus_Click">±</Button>
                <Button Grid.Row="1" Grid.Column="4" Margin="5,0,0,5" Name="btnSqrt" Click="btnSqrt_Click">√</Button>

                <Button Grid.Row="2" Grid.Column="0"  Margin="5,0,0,5" Name="btn7" Click="btnNum_Click">7</Button>
                <Button Grid.Row="2" Grid.Column="1" Margin="5,0,0,5" Name="btn8" Click="btnNum_Click">8</Button>
                <Button Grid.Row="2" Grid.Column="2"  Margin="5,0,0,5" Name="btn9" Click="btnNum_Click">9</Button>
                <Button Grid.Row="2" Grid.Column="3" Margin="5,0,0,5" Name="btnDivide" Click="btnDivide_Click">/</Button>
                <Button Grid.Row="2" Grid.Column="4" Margin="5,0,0,5" Name="btnPercent" Click="btnPercent_Click">%</Button>

                <Button Grid.Row="3" Grid.Column="0" Margin="5,0,0,5" Name="btn4" Click="btnNum_Click">4</Button>
                <Button Grid.Row="3" Grid.Column="1" Margin="5,0,0,5" Name="btn5" Click="btnNum_Click">5</Button>
                <Button Grid.Row="3" Grid.Column="2" Margin="5,0,0,5" Name="btn6" Click="btnNum_Click">6</Button>
                <Button Grid.Row="3" Grid.Column="3" Margin="5,0,0,5" Name="btnTimes" Click="btnTimes_Click">*</Button>
                <Button Grid.Row="3" Grid.Column="4"  Margin="5,0,0,5" Name="btnReciprocal" Click="btnReciprocal_Click">1/x</Button>

                <Button Grid.Row="4" Grid.Column="0" Margin="5,0,0,5" Name="btn1" Click="btnNum_Click">1</Button>
                <Button Grid.Row="4" Grid.Column="1" Margin="5,0,0,5" Name="btn2" Click="btnNum_Click">2</Button>
                <Button Grid.Row="4" Grid.Column="2" Margin="5,0,0,5" Name="btn3" Click="btnNum_Click">3</Button>
                <Button Grid.Row="4" Grid.Column="3"  Margin="5,0,0,5" Name="btnMinus" Click="btnMinus_Click">-</Button>
                <Button Grid.Row="4" Grid.Column="4" Grid.RowSpan="2" Margin="5,0,0,5" Name="btnEqual" Click="btnEqual_Click">=</Button>
               
                <Button Grid.Row="5" Grid.Column="0" Grid.ColumnSpan="2" Margin="5,0,0,5" Name="btn0" Click="btnNum_Click">0</Button>
                <Button Grid.Row="5" Grid.Column="2" Margin="5,0,0,5" Name="btnDot" Click="btnDot_Click">.</Button>
                <Button Grid.Row="5" Grid.Column="3" Margin="5,0,0,5"  Name="btnPlus" Click="btnPlus_Click">+</Button>
            </Grid>
        <TextBlock Margin="10" HorizontalAlignment="Center"> Copyright 2013 BeeEye Dmu </TextBlock>
        </StackPanel>

</Window>

소스(cs)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
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 WPF_calc
{
    /// <summary>
    /// MainWindow.xaml에 대한 상호 작용 논리
    /// </summary>
    public partial class MainWindow : Window
    {
        private bool op_after;  // operator가 눌린 바로 다음에 true
        private bool m_inCalc;  // 계산중
        private double l_value;
        private double r_value;
        private char m_Op;
        private double memNum;
        private bool ms_after;  // memory save 등 바로 다음에 true

        public MainWindow()
        {
            InitializeComponent();

            txtResult.Text = "0";
            txtResult.TextAlignment = TextAlignment.Right;
            txtResult.VerticalContentAlignment = VerticalAlignment.Bottom;

            txtResult.FontSize = 19; 

        }

        // 숫자 버튼 처리
        private void btnNum_Click(object sender, RoutedEventArgs e)
        {
            Button btn = sender as Button;

            String num = btn.Name.Remove(0, 3); // 맨 앞에서 3글자 삭제

            if (op_after == true || ms_after == true)
            {
                txtResult.Text = num;
                op_after = false;
                ms_after = false;
            }
            else if (txtResult.Text.IndexOf('.') != -1)  // 소수점이 있다면, 0. 을 처리하기 위함
            {
                txtResult.Text += num;
            }
            else if (double.Parse(txtResult.Text) == 0)
            {
                txtResult.Text = num;
            }
            else
                txtResult.Text += num;
        }

        private void btnBS_Click(object sender, RoutedEventArgs e)
        {
            txtResult.Text = txtResult.Text.Remove(txtResult.Text.Length - 1);
            if (txtResult.Text.Length == 0)
                txtResult.Text = "0";
        }

        private void btnCE_Click(object sender, RoutedEventArgs e)
        {
            txtResult.Text = "0";
        }

        private void btnC_Click(object sender, RoutedEventArgs e)
        {
            txtResult.Text = "0";
            expDisp.Text = "";
            l_value = 0;
            r_value = 0;
            op_after = false;
            m_inCalc = false;
        }

        private void btnPlusMinus_Click(object sender, RoutedEventArgs e)
        {
            if (expDisp.Text != "")
                expDisp.Text = "negate(" + expDisp.Text + ")";

            txtResult.Text = (-double.Parse(txtResult.Text)).ToString();
        }

        private void btnSqrt_Click(object sender, RoutedEventArgs e)
        {
            if (expDisp.Text != "")
                expDisp.Text = "sqrt(" + expDisp.Text + ")";
            else
                expDisp.Text = "sqrt(" + txtResult.Text + ")";

            txtResult.Text = Math.Sqrt(double.Parse(txtResult.Text)).ToString();
            op_after = true;
          
        }

        private void btnDivide_Click(object sender, RoutedEventArgs e)
        {
            l_value = Convert.ToDouble(txtResult.Text);
            m_inCalc = true;
            op_after = true;
            m_Op = '/';
            expDisp.Text = l_value.ToString() + " /";
        }

        private void btnTimes_Click(object sender, RoutedEventArgs e)
        {
            l_value = Convert.ToDouble(txtResult.Text);
            m_inCalc = true;
            op_after = true;
            m_Op = '*';
            expDisp.Text = l_value.ToString() + " *";
        }

        private void btnMinus_Click(object sender, RoutedEventArgs e)
        {
            l_value = Convert.ToDouble(txtResult.Text);
            m_inCalc = true;
            op_after = true;
            m_Op = '-';
            expDisp.Text = l_value.ToString() + " -";
        }

        private void btnPlus_Click(object sender, RoutedEventArgs e)
        {
            l_value = Convert.ToDouble(txtResult.Text);
            m_inCalc = true;
            op_after = true;
            m_Op = '+';
            expDisp.Text = l_value.ToString() + " +";
        }

        private void btnEqual_Click(object sender, RoutedEventArgs e)
        {
            if (m_inCalc == true)
            {
                r_value = double.Parse(txtResult.Text);
                switch (m_Op)
                {
                    case '+': txtResult.Text = (l_value + r_value).ToString(); break;
                    case '-': txtResult.Text = (l_value - r_value).ToString(); break;
                    case '*': txtResult.Text = (l_value * r_value).ToString(); break;
                    case '/': txtResult.Text = (l_value / r_value).ToString(); break;
                }
                expDisp.Text = "";
                op_after = true;
            }

        }

        private void btnReciprocal_Click(object sender, RoutedEventArgs e)
        {
            txtResult.Text = (1.0 / double.Parse(txtResult.Text)).ToString();
            op_after = true;
        }

        private void btnDot_Click(object sender, RoutedEventArgs e)
        {
            if (op_after == true || double.Parse(txtResult.Text) == 0)
            {
                txtResult.Text = "0.";
                op_after = false;
            }          
            else if (double.Parse(txtResult.Text) == (int)(double.Parse(txtResult.Text))) // 정수라면
            {
                txtResult.Text += ".";
            }
        }

        private void btnMS_Click(object sender, RoutedEventArgs e)
        {
            memDisp.Text = "M";
            memNum = double.Parse(txtResult.Text);
            ms_after = true;
        }

        private void btnMC_Click(object sender, RoutedEventArgs e)
        {
            memDisp.Text = "";
            memNum = 0;
        }

        private void btnMR_Click(object sender, RoutedEventArgs e)
        {
            txtResult.Text = memNum.ToString();
            ms_after = true;
        }

        private void btnMPlus_Click(object sender, RoutedEventArgs e)
        {
            memNum += double.Parse(txtResult.Text);
        }

        private void btnMMinus_Click(object sender, RoutedEventArgs e)
        {
            memNum -= double.Parse(txtResult.Text);
        }

        private void btnPercent_Click(object sender, RoutedEventArgs e)
        {
            double p_value = l_value * (double.Parse(txtResult.Text) * 0.01);
            expDisp.Text += " " + p_value.ToString();
            txtResult.Text = p_value.ToString();
        }
    }
}

 

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