W003. BMI계산기

GUI

<Window x:Class="W003_BMI.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:W003_BMI"
        mc:Ignorable="d"
        Title="BMI계산기" Height="433.598" Width="391.215"
        Background="Aquamarine">
    <Grid>
        <TextBlock HorizontalAlignment="Left" Width="60" Margin="84,112,0,0" TextWrapping="Wrap" Text="키(cm)" VerticalAlignment="Top"/>
        <TextBlock HorizontalAlignment="Left" Width="60" Margin="84,159,0,0" TextWrapping="Wrap" Text="체중(kg)" VerticalAlignment="Top"/>
        <TextBox x:Name="txtHeight" HorizontalAlignment="Left"  Height="23" Margin="173,111,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120" HorizontalContentAlignment="Center" Text=""/>
        <TextBox x:Name="txtWeight" HorizontalAlignment="Left" Height="23" Margin="173,158,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120" HorizontalContentAlignment="Center" Text=""/>
        <Button x:Name="btnBMI" Content="BMI 계산" HorizontalAlignment="Left" Margin="108,209,0,0" VerticalAlignment="Top" Width="158" Height="29" Click="btnBMI_Click"/>
        <TextBlock x:Name="lblResult" HorizontalAlignment="Left" Margin="81,278,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Height="34" Width="212"/>
    </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 W003_BMI
{
    /// <summary>
    /// MainWindow.xaml에 대한 상호 작용 논리
    /// </summary>
    public partial class MainWindow : Window //from을 상속받는 from1
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void btnBMI_Click(object sender, RoutedEventArgs e)
        {
            if (txtHeight.Text == "" || txtWeight.Text == "")
            {
                lblResult.Text = "키와 체중을 입력하세요";
                return;
            }
            double h = double.Parse(txtHeight.Text) / 100;
            double w = double.Parse(txtWeight.Text);
            double bmi = w / (h * h);

            //lblResult.Text = "당신의 BMI는 " + bmi + " 입니다.";
            lblResult.Text = string.Format("당신의 BMI는 {0:F2}입니다.", bmi); //F2 = 소숫점 둘쨰 자리 까지

            //F1 키 도움말  
        }
    }
}