#

a

#

App.xaml

<Application x:Class="WpfApplication7.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
         
    </Application.Resources>
</Application>

App.xaml.cs

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;

namespace WpfApplication7
{
    /// <summary>
    /// App.xaml の相互作用ロジック
    /// </summary>
    public partial class App : Application
    {
    }
}

MainWindow.xaml

<Window x:Class="WpfApplication7.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:c="clr-namespace:WpfApplication7"
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <c:BindingData x:Key="bd" PreviewType="password"/>
    </Window.Resources>
    <ScrollViewer>
        <StackPanel>
            <StackPanel DataContext="{StaticResource bd}">
                <TextBlock Text="{Binding PreviewType}"></TextBlock>
                <TextBox Text="{Binding InputString, Mode=OneWayToSource, UpdateSourceTrigger=PropertyChanged}"></TextBox>
                <TextBlock Text="{Binding InputString, Mode=OneWay}"></TextBlock>
                <TextBlock Text="{Binding PreviewString, Mode=OneWay}"></TextBlock>
            </StackPanel>
            <StackPanel>
                <StackPanel.DataContext>
                    <c:BindingData PreviewType="raw"/>
                </StackPanel.DataContext>
                <TextBlock Text="{Binding PreviewType}"></TextBlock>
                <TextBox Text="{Binding InputString, Mode=OneWayToSource, UpdateSourceTrigger=PropertyChanged}"></TextBox>
                <TextBlock Text="{Binding InputString, Mode=OneWay}"></TextBlock>
                <TextBlock Text="{Binding PreviewString, Mode=OneWay}"></TextBlock>
            </StackPanel>
            <c:UserControl1>
                <c:UserControl1.DataContext>
                    <c:BindingData PreviewType="password"/>
                </c:UserControl1.DataContext>
            </c:UserControl1>
            <c:UserControl1>
                <c:UserControl1.DataContext>
                    <c:BindingData PreviewType="raw"/>
                </c:UserControl1.DataContext>
            </c:UserControl1>
            <c:UserControl2>
                <c:UserControl2.Content>
                    <c:BindingData PreviewType="password"/>
                </c:UserControl2.Content>
            </c:UserControl2>
            <c:UserControl2>
                <c:UserControl2.Content>
                    <c:BindingData PreviewType="raw"/>
                </c:UserControl2.Content>
            </c:UserControl2>
        </StackPanel>
    </ScrollViewer>
</Window>

MainWindow.xaml.cs

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 WpfApplication7
{
    public enum PreviewType {
        raw,
        password
    }

    public class BindingData : DependencyObject
    {
        public static readonly DependencyProperty PreviewTypeProperty = DependencyProperty.Register(
            "PreviewType", typeof(PreviewType), typeof(BindingData), new PropertyMetadata(PreviewType.raw));

        public PreviewType PreviewType {
            get { return (PreviewType)this.GetValue(PreviewTypeProperty); }
            set { this.SetValue(PreviewTypeProperty, value); }
        }

        public static readonly DependencyProperty InputStringProperty = DependencyProperty.Register(
        "InputString", typeof(string), typeof(BindingData), new FrameworkPropertyMetadata(new PropertyChangedCallback(OnInputStringPropertyChanged)));
        private static void OnInputStringPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            var s = e.NewValue as string;
            switch ((PreviewType)d.GetValue(PreviewTypeProperty))
            {
                case PreviewType.password:
                    d.SetValue(PreviewStringProperty, new String((s.Select(c => '*').ToArray<char>())));
                    break;
                case PreviewType.raw:
                    d.SetValue(PreviewStringProperty, s);
                    break;
            }
        }
        public string InputString
        {
            get { return (string)this.GetValue(InputStringProperty); }
            set { this.SetValue(InputStringProperty, value); }
        }

        public static readonly DependencyProperty PreviewStringProperty = DependencyProperty.Register(
"PreviewString", typeof(string), typeof(BindingData), new PropertyMetadata(""));

        public string PreviewString
        {
            get { return (string)this.GetValue(PreviewStringProperty); }
            set { this.SetValue(PreviewStringProperty, value); }
        }
    }

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

UserControl1.xaml

<UserControl x:Class="WpfApplication7.UserControl1"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300">
        <StackPanel>
            <TextBlock>this is user control!!!!</TextBlock>
            <TextBlock Text="{Binding PreviewType}"></TextBlock>
            <TextBox Text="{Binding InputString, Mode=OneWayToSource, UpdateSourceTrigger=PropertyChanged}"></TextBox>
            <TextBlock Text="{Binding InputString, Mode=OneWay}"></TextBlock>
            <TextBlock Text="{Binding PreviewString, Mode=OneWay}"></TextBlock>
            <TextBlock Text="{Binding}" Background="AntiqueWhite"/>
    </StackPanel>
</UserControl>

UserControl1.xaml.cs

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 WpfApplication7
{
    /// <summary>
    /// UserControl1.xaml の相互作用ロジック
    /// </summary>
    public partial class UserControl1 : UserControl
    {
        public UserControl1()
        {
            InitializeComponent();
        }
    }
}

UserControl2.xaml

<UserControl x:Class="WpfApplication7.UserControl2"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300">

    <UserControl.ContentTemplate>
        <DataTemplate>
            <StackPanel>
                <TextBlock>with content template</TextBlock>
                <TextBlock Text="{Binding PreviewType}"></TextBlock>
                <TextBox Text="{Binding InputString, Mode=OneWayToSource, UpdateSourceTrigger=PropertyChanged}"></TextBox>
                <TextBlock Text="{Binding InputString, Mode=OneWay}"></TextBlock>
                <TextBlock Text="{Binding PreviewString, Mode=OneWay}"></TextBlock>
                <TextBlock Text="{Binding}" Background="AntiqueWhite"/>
            </StackPanel>
        </DataTemplate>
    </UserControl.ContentTemplate>
</UserControl>

UserControl2.xaml.cs

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 WpfApplication7
{
    /// <summary>
    /// UserControl2.xaml の相互作用ロジック
    /// </summary>
    public partial class UserControl2 : UserControl
    {
        public UserControl2()
        {
            InitializeComponent();
        }
    }
}