H001. 사칙연산 계산기 만들기

GUI

<Window x:Class="H001_calculator.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:H001_calculator"
        mc:Ignorable="d"
        Title="사칙계산기" Height="350" Width="350"
        Background="Orange">
    <Grid>
        <Label FontSize="20" 
               HorizontalAlignment="Center" 
               VerticalAlignment="Center" 
               Margin="45,44,187,189">
            숫자1
        </Label>
        <Label FontSize="20" 
               HorizontalAlignment="Center" 
               VerticalAlignment="Center" 
               Margin="45,104,187,131">
            숫자2
        </Label>
        <TextBox x:Name="txtNo1"
                 Width="100"
                 Height="30"
                 FontSize="20"
                 HorizontalAlignment="Center"
                 VerticalAlignment="Center" 
                 Margin="140,44,53.6,186.4">
        </TextBox>
        <TextBox x:Name="txtNo2"
                 Width="100"
                 Height="30"
                 FontSize="20"
                 HorizontalAlignment="Center"
                 VerticalAlignment="Center" 
                 Margin="140,104,53.6,136.4" RenderTransformOrigin="1.226,0.62">
        </TextBox>
        <Button x:Name="btnPlus"
                FontSize="30"
                HorizontalAlignment="Center"
                VerticalAlignment="Center"
                Width="50"
                Height="50" Margin="10,155,233.6,65.4"
                Click="btnPlus_Click">
            +
        </Button>
        <Button x:Name="btnMinus"
                FontSize="30"
                HorizontalAlignment="Center"
                VerticalAlignment="Center"
                Width="50"
                Height="50" Margin="80,155,163.6,65.4"
                Click="btnMinus_Click">
            -
        </Button>
        <Button x:Name="btnTimes"
                FontSize="30"
                HorizontalAlignment="Center"
                VerticalAlignment="Center"
                Width="50"
                Height="50" Margin="157,155,86.6,65.4"
                Click="btnTimes_Click">
            *
        </Button>
        <Button x:Name="btnDivide"
                FontSize="30"
                HorizontalAlignment="Center"
                VerticalAlignment="Center"
                Width="50"
                Height="50" Margin="234,155,9.6,65.4"
                Click="btnDivide_Click">
            /
        </Button>
        <TextBlock x:Name="lblResult"
               FontSize="20" 
               HorizontalAlignment="Center" 
               VerticalAlignment="Center" 
               Margin="31,220,212.6,15.4" RenderTransformOrigin="1.492,0.375">
        </TextBlock>
        <TextBox x:Name="txtResult"
                 Width="160"
                 Height="30"
                 FontSize="20"
                 HorizontalAlignment="Center"
                 VerticalAlignment="Center" 
                 Margin="96,225,37.6,15.4">
        </TextBox>
    </Grid>
</Window>

 

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 H001_calculator
{
    /// <summary>
    /// MainWindow.xaml에 대한 상호 작용 논리
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void btnPlus_Click(object sender, RoutedEventArgs e)
        {
            double x1 = double.Parse(txtNo1.Text);
            double x2 = double.Parse(txtNo2.Text);
            double sum = x1 + x2;

            lblResult.Text = string.Format("(+) 결과 ");
            txtResult.Text = string.Format("{0:F2}",sum);
        }

        private void btnMinus_Click(object sender, RoutedEventArgs e)
        {
            double x1 = double.Parse(txtNo1.Text);
            double x2 = double.Parse(txtNo2.Text);
            double sum = x1 - x2;

            lblResult.Text = string.Format("(-) 결과 ");
            txtResult.Text = string.Format("{0:F2}", sum);
        }

        private void btnTimes_Click(object sender, RoutedEventArgs e)
        {
            double x1 = double.Parse(txtNo1.Text);
            double x2 = double.Parse(txtNo2.Text);
            double sum = x1 * x2;

            lblResult.Text = string.Format("(*) 결과 ");
            txtResult.Text = string.Format("{0:F2}", sum);
        }

        private void btnDivide_Click(object sender, RoutedEventArgs e)
        {
            double x1 = double.Parse(txtNo1.Text);
            double x2 = double.Parse(txtNo2.Text);
            double sum = x1 / x2;

            lblResult.Text = string.Format("(/) 결과 ");
            txtResult.Text = string.Format("{0:F2}", sum);

        }
    }
}