MVVM(2) TextBox 둘, Button 하나

https://steadycodist.tistory.com/entry/WPFMVVMStudy-MVVM-%EC%8B%A4%EC%8A%B5-2-%EB%8B%A8%EC%9C%84-%EB%B3%80%ED%99%98%EA%B8%B0-2

[WPF][MVVM][Study] MVVM 실습 2 - 단위 변환기 2

위 블로그를 참고했다.

 

MVVM을 이용하여 버튼을 누르면 아래 텍스트 박스에 (위 텍스트 박스에 적힌 수+1)이 나타나는 프로그램을 작성했다.

 

 

 

MainWindow.xaml

<Window x:Class="TmpWpfApp1.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:TmpWpfApp1"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800"
        Background="Black"
        xmlns:vm="clr-namespace:TmpWpfApp1.ViewModel">
    <Window.DataContext>
        <vm:MainViewModel/>
    </Window.DataContext>
    <Grid>
        <StackPanel>
            <TextBox Text="{Binding Model1.X, UpdateSourceTrigger=PropertyChanged}" Margin="9"/>
            <TextBox Text="{Binding Model1.Y, UpdateSourceTrigger=PropertyChanged}"/>
            <Button Command="{Binding ButtonCmd}">click me</Button>
        </StackPanel>
    </Grid>
</Window>

 

 

 

 

Command.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Input;

namespace TmpWpfApp1
{
    internal class Command : ICommand
    {
        private Action<object> __executeAction;
        public event EventHandler CanExecuteChanged;

        public Command(Action<object> executeAction)
        {
            __executeAction = executeAction;
        }

        public bool CanExecute(object parameter)
        {
            return true;
        }

        public void Execute(object parameter)
        {
            __executeAction?.Invoke(parameter);
        }
    }
}

 

 

 

 

Model/MainModel.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;

namespace TmpWpfApp1.Model
{
    internal class MainModel : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        protected void OnPropertyChanged([CallerMemberName]string name=null)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
        }
        private byte x;
        public byte X
        {
            get => x;
            set
            {
                if(x != value)
                {
                    x = value;
                    OnPropertyChanged();
                }
            }
        }
        private byte y;
        public byte Y
        {
            get => y;
            set
            {
                if(y != value)
                {
                    y = value;
                    OnPropertyChanged();
                }
            }
        }
    }
}

 

 

 

 

ViewModel/MainViewModel.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using TmpWpfApp1.Model;

namespace TmpWpfApp1.ViewModel
{
    internal class MainViewModel
    {
        public MainModel Model1 { get; set; } = new MainModel();
        public Command ButtonCmd { get; set; }
        public MainViewModel()
        {
            ButtonCmd = new Command(x => Model1.Y = (byte)(Model1.X + 1));
        }
    }
}