使用Silverlight Toolkit中的主题(Theme)

在Silverlight Tookit 中提供了大约十种主题，大家可以根据自己的喜好，很容易就在项目中实现
动态换肤效果。当然其官方还推荐了几个制作主题的插件，使用这些 Blend插件可以很方便的生成各种
风格颜色的主题。

      好了，下面开始今天的正文。

     首先我们要下载该Tookit并将其中的相应DLL文件:Microsoft.Windows.Controls.Theming.dll加
载到当前的示例中，另外就是相关的theme文件了，我已将10种主题文件放在了这个DEMO的themes
文件夹下：

并以“内容”方式作为"生成操作"的选项，如下：

我们可以直接在XAML文件中声明使用主题的元素，比如：

<UserControl

..
xmlns:theming="clr-namespace:Microsoft.Windows.Controls.Theming;assembly=Microsoft.Windows.Controls.Theming"

>


<StackPanel Width="100"
  theming:ImplicitStyleManager.ApplyMode="Auto"
  theming:ImplicitStyleManager.ResourceDictionaryUri="themes/ExpressionLight.xaml">
        <Button Content="Button"/>
        <CheckBox Content="CheckBox"/>
        <RadioButton Content="RadioButton"/>
        <Slider/>
        <ListBox/>
        <ProgressBar Height="15" Value="30"/>
        <controls:Expander ExpandDirection="Down"/>
    </StackPanel>

</UserControl>

这样在该StackPanel下的所有控件样式均应用了ExpressionLight主题。另外我们也可以在CS
文件中对指定的控件设置相应的主题，比如本DEMO中所写的代码：

public Page()
{
    InitializeComponent();
    this.ThemeList.SelectionChanged += new SelectionChangedEventHandler(ThemeList_SelectionChanged);
    this.Loaded += new RoutedEventHandler(Page_Loaded);
}

void Page_Loaded(object sender, RoutedEventArgs e)
{
    ThemeList.Items.Add(new ComboBoxItem() { Name = "ExpressionDark", Content = "ExpressionDark", DataContext = "themes/ExpressionDark.xaml", IsEnabled = true });
    ThemeList.Items.Add(new ComboBoxItem() { Name = "ExpressionLight", Content = "ExpressionLight", DataContext = "themes/ExpressionLight.xaml" });
    ThemeList.Items.Add(new ComboBoxItem() { Name = "RainierOrange", Content = "RainierOrange", DataContext = "themes/RainierOrange.xaml" });
    ThemeList.Items.Add(new ComboBoxItem() { Name = "RainierPurple", Content = "RainierPurple", DataContext = "themes/RainierPurple.xaml" });
    ThemeList.Items.Add(new ComboBoxItem() { Name = "RainierRadialBlue", Content = "RainierRadialBlue", DataContext = "themes/RainierRadialBlue.xaml" });
    ThemeList.Items.Add(new ComboBoxItem() { Name = "ShinyBlue", Content = "ShinyBlue", DataContext = "themes/ShinyBlue.xaml" });
    ThemeList.Items.Add(new ComboBoxItem() { Name = "ShinyDarkGreen", Content = "ShinyDarkGreen", DataContext = "themes/ShinyDarkGreen.xaml" });
    ThemeList.Items.Add(new ComboBoxItem() { Name = "ShinyDarkPurple", Content = "ShinyDarkPurple", DataContext = "themes/ShinyDarkPurple.xaml" });
    ThemeList.Items.Add(new ComboBoxItem() { Name = "ShinyDarkTeal", Content = "ShinyDarkTeal", DataContext = "themes/ShinyDarkTeal.xaml" });
    ThemeList.Items.Add(new ComboBoxItem() { Name = "ShinyRed", Content = "ShinyRed", DataContext = "themes/ShinyRed.xaml" });

    SetTheme(ThemeList.Items[0] as ComboBoxItem);
}

private void ThemeList_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    SetTheme(ThemeList.SelectedItem as ComboBoxItem);
}

//设置相应的theme
void SetTheme(ComboBoxItem comboBoxItem)
{
    if (comboBoxItem != null)
    {
        ControlPage control = new ControlPage();
        Test.Children.Clear();
        Test.Children.Add(control);

        Uri uri = new Uri(comboBoxItem.DataContext.ToString(), UriKind.Relative);
        ImplicitStyleManager.SetResourceDictionaryUri(control, uri);
        ImplicitStyleManager.SetApplyMode(control, ImplicitStylesApplyMode.Auto);
        ImplicitStyleManager.Apply(control);
    }
}

上面代码中的ControlPage 类即是我们要加载的控件页对象，在该对象上声明了一些控件，然后将这些控
件（集合）做为子控件加载到当前PAGE页面中的Stack元素(Test)中。这样我们运行一下这个DEMO,看一下
各个主题的显示效果: