WPF 皮肤
1、新建两个ResourceDictionary的xaml，BlueSkin.xaml和YellowSkin.xaml；

<!--<SnippetBlueSkinMARKUP1>-->
<!-- Blue Skin -->
<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:SkinnedApplication">
  <Style TargetType="{x:Type Button}">
    <Setter Property="Background" Value="Blue" />
  </Style>
  <Style TargetType="{x:Type local:ChildWindow}">
    <Setter Property="Background" Value="Blue" />
  </Style>
  <Style TargetType="{x:Type local:MainWindow}">
    <Setter Property="Background" Value="Blue" />
  </Style>
</ResourceDictionary>
<!--</SnippetBlueSkinMARKUP2>-->

<!--<SnippetYellowSkinMARKUP1>-->
<!-- Yellow Skin -->
<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:SkinnedApplication">
  <Style TargetType="{x:Type Button}">
    <Setter Property="Background" Value="Yellow" />
  </Style>
  <Style TargetType="{x:Type local:ChildWindow}">
    <Setter Property="Background" Value="Yellow" />
  </Style>
  <Style TargetType="{x:Type local:MainWindow}">
    <Setter Property="Background" Value="Yellow" />
  </Style>
</ResourceDictionary>
<!--</SnippetYellowSkinMARKUP2>-->

2、App.xaml添加 Startup="App_Startup"；

<Application x:Class="SkinnedApplication.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:SkinnedApplication"
             StartupUri="MainWindow.xaml"
             Startup="App_Startup">
    <Application.Resources>
         
    </Application.Resources>
</Application>

3、App.xaml.cs添加 对应方法，加载两个皮肤；

private void App_Startup(object sender, StartupEventArgs e)
        {
            Properties["Blue"] = (ResourceDictionary)LoadComponent(new Uri("BlueSkin.xaml", UriKind.Relative));
            Properties["Yellow"] = (ResourceDictionary)LoadComponent(new Uri("YellowSkin.xaml", UriKind.Relative));

            // Note: you can also use the following syntax:
            //   Skins["Yellow"] = new YellowSkin()
            // But only as long as you implement the ResourceDictionary using markup and code-behind,
            // use the x:Class attribute in markup, and call InitializeComponent() from code-behind, eg:
            //
            //   <!-- Markup -->
            //   <ResourceDictionary
            //     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
            //     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
            //     xmlns:local="clr-namespace:SDKSample" 
            //     x:Class="SDKSample.YellowSkin">
            //        ...
            //   </ResourceDictionary>
            //
            //   // Code-behind
            //   public partial class YellowSkin : ResourceDictionary
            //   {
            //     public YellowSkin() { InitializeComponent(); }
            //   }
        }

4、 MainWindow.xaml.cs中添加如下初始化代码；

    //set initial skin
            Application.Current.Resources = (ResourceDictionary)Application.Current.Properties["Blue"];

5、如果用下拉框选择，在事件中添加如下代码；

    //Change the skin
            var selectedValue = (string)e.AddedItems[0];
            Application.Current.Resources = (ResourceDictionary)Application.Current.Properties[selectedValue];

maojie