让用户更改资源字典

问题描述

我所有的样式和模板都位于名为design.xaml"的资源字典中，因此在我拥有的每个用户控件中:

All my styles and templates are located in a resource dictionnary named "design.xaml" so in every Usercontrol I have :

<UserControl.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="/MyProject;component/design.xaml"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </UserControl.Resources>

但我想让用户通过创建 2 个资源字典来选择他喜欢的设计，其中包含相同的模板(每个模板具有相同的键，不同颜色).

But I'd like to let the user choose his preferred design by creating 2 resources dictionnaries with the same templates inside (same key for each template with different colors).

例如文件 design.xaml 和 design2.xaml

For example a file design.xaml and design2.xaml

我该怎么做?是否可以使用代码动态更改资源字典?

How can I do that ? Is it possible to change dynamically the resource dictionnary using code ?

谢谢！

推荐答案

ResourceDictionary1

<Style x:Key="StyleTitleText" TargetType="TextBlock">
    <Setter Property="FontFamily" Value="Arial" />
    <Setter Property="FontSize" Value="14"/>
    <Setter Property="Foreground" Value="Green" />
</Style>

ResourceDictionary2

<Style x:Key="StyleTitleText" TargetType="TextBlock">
  <Setter Property="FontFamily" Value="Arial" />
  <Setter Property="FontSize" Value="14"/>
  <Setter Property="Foreground" Value="Red" />
</Style>

MainWindow xaml

如果主题需要动态更新 UI(即无需重新加载整个 UI)，您需要使用 DynamicResource 而不是 StaticResource.

You need to use DynamicResource over StaticResource if the themes need to update the UI dynamically (i.e. withoput entire UI reloading).

<Window.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="design.xaml" />
            <ResourceDictionary Source="design2.xaml" />
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</Window.Resources>

<StackPanel Orientation="Horizontal">
    <ToggleButton Name="Radiobtn" Content="Switch ResourceDictionary" Height="35"   FontSize="12" Margin="0,0,50,0"  Click="RadioButton_Checked_1"></ToggleButton>
    <TextBlock Style="{DynamicResource StyleTitleText}" Text="hfghfhgfhgfhgfghfhfhgf" Grid.Row="1" HorizontalAlignment="Center" VerticalAlignment="Center"></TextBlock>
</StackPanel>

c#

  ResourceDictionary r1;
  ResourceDictionary r0;
    public MainWindow()
    {
        InitializeComponent();
        r1 = this.Resources.MergedDictionaries[1];
        r0 = this.Resources.MergedDictionaries[0];
        this.Resources.MergedDictionaries.Remove(r1);

    }

    private void RadioButton_Checked_1(object sender, RoutedEventArgs e)
    {
        this.Resources.Clear();
        if (Radiobtn.IsChecked == true)
        {
            this.Resources.MergedDictionaries.Add(r0);
        }
        else
        {
            this.Resources.MergedDictionaries.Add(r1);
        }
    }

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