WPF - トリガー、RadioButtonバインド

エッセンシャルWPF:Windows Presentation Foundation (Programmer's SELECTION)

XAMLプログラミング WPFアプリケーションの概要と開発

WPFトリガー使用方法

Windows1.xaml

<Window x:Class="WpfTrigger.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300">
    <Window.Resources>  
         <Style TargetType="Button">
            <Style.Triggers>
                <Trigger Property="IsMouseOver" Value="true">
                    <Trigger.Setters>
                        <Setter Property = "Height" Value="40"/>
                    </Trigger.Setters>
                </Trigger>
            </Style.Triggers>
        </Style> 
    </Window.Resources>
    <StackPanel>
        <Button Width="120">高さが変化します</Button>
    </StackPanel>
</Window>

Windows1.xaml.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 WpfTrigger
{
    /// <summary>
    /// Window1.xaml の相互作用ロジック
    /// </summary>
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }
    }
}

WPF - RadioButtonバインド方法

Windows.xaml

<Window x:Class="WpfMsControl.Window2"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:WpfMsControl"
    Title="Window1" Height="227" Width="300">

    <Window.Resources>
        <local:EnumRadioConverter x:Key="EnumRadioConverter"/>
    </Window.Resources>

    <Grid>
        <GroupBox Header="ラジオボタンバインド">
            <StackPanel >
                <Button x:Name="Button" Margin="10" Click="Button_Click">確認ボタン</Button>
                <RadioButton IsChecked="{Binding Path=MyType, Converter={StaticResource EnumRadioConverter}, ConverterParameter=TYPE_A}" Margin="10" GroupName="ButtonVisibility">タイプA</RadioButton>
                <RadioButton IsChecked="{Binding Path=MyType, Converter={StaticResource EnumRadioConverter}, ConverterParameter=TYPE_B}" Margin="10" GroupName="ButtonVisibility">タイプB</RadioButton>
                <RadioButton IsChecked="{Binding Path=MyType, Converter={StaticResource EnumRadioConverter}, ConverterParameter=TYPE_C}" Margin="10" GroupName="ButtonVisibility">タイプC</RadioButton>
                <RadioButton IsChecked="{Binding Path=MyType, Converter={StaticResource EnumRadioConverter}, ConverterParameter=TYPE_D}" Margin="10" GroupName="ButtonVisibility">タイプD</RadioButton>
            </StackPanel>
        </GroupBox>
    </Grid>
</Window>

Windows2.xaml.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.Shapes;

namespace WpfMsControl
{
    /// <summary>
    /// Window2.xaml の相互作用ロジック
    /// </summary>
    public partial class Window2 : Window
    {
        TestData data;

        public Window2()
        {
            InitializeComponent();

            //(1)数値をEnum値変換した値を指定
            //Type type = typeof(EnumDefines.MyEnum);
            //EnumDefines.MyEnum myEnum = (EnumDefines.MyEnum)Enum.Parse(type, "1", true);

            //(2) Enum値を指定
            this.data = new TestData(EnumDefines.MyEnum.TYPE_B);

　　　　　　//データ設定
            this.DataContext = data;
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            MessageBox.Show(this.data.MyType.ToString());
        }
    }
}

EnumRadioConverter.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace WpfMsControl
{
    public class EnumRadioConverter : System.Windows.Data.IValueConverter
    {
        public object Convert(object value, System.Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {

            var paramString = parameter as string;
            if (paramString == null)
            {
                return System.Windows.DependencyProperty.UnsetValue;
            }

            if (!Enum.IsDefined(value.GetType(), paramString))
            {
                return System.Windows.DependencyProperty.UnsetValue;
            }

            var paramParsed = Enum.Parse(value.GetType(), paramString);

            return (value.Equals(paramParsed));
        }

        public object ConvertBack(object value, System.Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            var paramString = parameter as string;
            if (paramString == null)
            {
                return System.Windows.DependencyProperty.UnsetValue;
            }

            return Enum.Parse(targetType, paramString);
        }
    }
}

EnumDefines.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel;

namespace WpfMsControl
{
    public class EnumDefines
    {
        public enum MyEnum
        {
            TYPE_A,
            TYPE_B,
            TYPE_C,
            TYPE_D,
        }
    }
}

TestData.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel;

namespace WpfMsControl
{
    public class TestData : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

        private EnumDefines.MyEnum myType;

        public EnumDefines.MyEnum MyType
        {
            get { return this.myType; }
            set
            {
                this.myType = value;
                this.NotifyChanged("MyType");
            }
        }

        public TestData(EnumDefines.MyEnum myType)
        {
            this.myType = myType;
        }

        void NotifyChanged(string property)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(property));
            }
        }
    }
}