WPF 单个模块换肤

xmal:

<Window x:Class="wpfSkin.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:wpfSkin"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
    <Grid Margin="0,0,2,0">
        <TextBox HorizontalAlignment="Left" Height="23" Margin="88,41,0,0" Text="TextBox" VerticalAlignment="Top" Width="120" />
        <Button Content="Button" HorizontalAlignment="Left" Margin="242,42,0,0" VerticalAlignment="Top" Width="75"/>

        <RadioButton Content="Blue Skin" Margin="112,135,307,160" Checked="RadioButton_Checked_1" />
        <RadioButton Content="Red Skin" Margin="242,135,160,160" Checked="RadioButton_Checked"  />

    </Grid>

</Window>

添加文件夹skin，再添加resource Dictionary, xaml如下：

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    >
    <Style TargetType="TextBox">
        <Setter Property="Background" Value="LightBlue" />
        <Setter Property="Foreground" Value="Black" />
        <Setter Property="BorderThickness" Value="2" />
        <Setter Property="BorderBrush" Value="DarkBlue" />
        <Style.Triggers>
            <Trigger Property="IsReadOnly" Value="True">
                <Setter Property="Background" Value="Blue" />
            </Trigger>
        </Style.Triggers>
    </Style>
    <Style TargetType="Button">
        <Setter Property="Background" Value="Cyan" />
    </Style>
</ResourceDictionary>

后台代码cs:  

 public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
        Window wind = null;
        Button btn = null;
        private void RadioButton_Checked(object sender, RoutedEventArgs e)
        {
            wind = new Window() { Height = 300, Width = 300 };
            btn = new Button() { Content = "anniu" };
            wind.Content = btn;
            wind.Show();
        }

        private void RadioButton_Checked_1(object sender, RoutedEventArgs e)
        {
            ChangeSkin("skin/red_rd.xaml");
        }
        void ChangeSkin(string skinRelativeUri)
        {
            var skinDictUri = new Uri(skinRelativeUri, UriKind.Relative);

            var rd = Application.LoadComponent(skinDictUri) as ResourceDictionary;

            wind.Resources.MergedDictionaries.Clear();       //只换单个window的皮肤
            //btn.Resources.MergedDictionaries.Clear();        //只换button的皮肤
            //Application.Current.Resources.MergedDictionaries.Clear();  //换整个应用程序的皮肤
            btn.Resources.MergedDictionaries.Add(rd);
        }
    }