动态更改主题Telerik WPF

Posted 2021-04-15

我需要允许用户在使用telerik WPF控件创建的应用程序中动态更改主题。

我正在设置绑定到我的XAML中的每个telerik控件，如下所示：

XAML：

telerik:StyleManager.Theme="{Binding SelectedSMTheme, Mode=TwoWay}"

视图模型：

    private Theme selectedSMTheme;
    public Theme SelectedSMTheme
    {
        get
        {
            return selectedSMTheme;
        }
        set
        {
            selectedSMTheme = value;
            RaisePropertyChange("SelectedSMTheme");
        }
    }

并在用户选择主题时更改此SelectedSMTheme。

改变主题：

SelectedSMTheme = new Expression_DarkTheme();

还有其他方法可以在运行应用程序时更改telerik控件的主题。因为，在这里我需要为整个应用程序中的每个控件指定telerik:StyleManager.Theme。

答案

您可以使用StyleManager.ApplicationTheme设置初始主题。设置此属性会影响应用程序中的所有控件。

您的App.xaml.cs构造函数应如下所示：

public partial class App : Application
{
    public App()
    {
        StyleManager.ApplicationTheme = new Expression_DarkTheme();
        this.InitializeComponent();
    }
}

要在运行时切换主题，您应该清除应用程序资源并添加新资源。

private void btnChangeTheme_Click(object sender, RoutedEventArgs e)
{
    Application.Current.Resources.MergedDictionaries.Clear();
    Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary()
    {
        Source = new Uri("/Telerik.Windows.Themes.Green;component/Themes/System.Windows.xaml", UriKind.RelativeOrAbsolute)
    });
    Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary()
    {
        Source = new Uri("/Telerik.Windows.Themes.Green;component/Themes/Telerik.Windows.Controls.xaml", UriKind.RelativeOrAbsolute)
    });
    Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary()
    {
        Source = new Uri("/Telerik.Windows.Themes.Green;component/Themes/Telerik.Windows.Controls.Input.xaml", UriKind.RelativeOrAbsolute)
    });
}

您必须记住从位于安装文件夹中的Binaries.NoXaml文件夹中添加所需的程序集（在我的例子中是：C:Program Files (x86)ProgressTelerik UI for WPF R2 2018Binaries.NoXaml）：

• Telerik.Windows.Controls.dll
• Telerik.Windows.Controls.Input.dll
• 主题集，在我的例子中是：Telerik.Windows.Themes.Expression_Dark.dll和Telerik.Windows.Themes.Green.dll

请阅读以下文章以获取更多信息：

https://docs.telerik.com/devtools/wpf/styling-and-appearance/stylemanager/common-styling-apperance-setting-theme-wpf

https://docs.telerik.com/devtools/wpf/styling-and-appearance/how-to/styling-apperance-themes-runtime

另一答案

我正在使用kmatyaszek提供的类似解决方案，除了，我在ComboBox中这样做：

 private void StyleCombo_OnSelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        var selectedTheme = StyleCombo.SelectedItem as ThemeNames;
        Application.Current.Resources.MergedDictionaries.Clear();

        // XAML

        Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary
        {
            Source = new Uri("/Telerik.Windows.Themes." + selectedTheme.Value + ";component/Themes/System.Windows.xaml", UriKind.RelativeOrAbsolute)
        });
        Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary
        {
            Source = new Uri("/Telerik.Windows.Themes." + selectedTheme.Value + ";component/Themes/Telerik.Windows.Controls.xaml", UriKind.RelativeOrAbsolute)
        });
        Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary
        {
            Source = new Uri("/Telerik.Windows.Themes." + selectedTheme.Value + ";component/Themes/Telerik.Windows.Controls.Input.xaml", UriKind.RelativeOrAbsolute)
        });
        Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary
        {
            Source = new Uri("/Telerik.Windows.Themes." + selectedTheme.Value + ";component/Themes/Telerik.Windows.Controls.Navigation.xaml", UriKind.RelativeOrAbsolute)
        });
        Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary
        {
            Source = new Uri("/Telerik.Windows.Themes." + selectedTheme.Value + ";component/Themes/Telerik.Windows.Controls.Data.xaml", UriKind.RelativeOrAbsolute)
        });
        Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary
        {
            Source = new Uri("/Telerik.Windows.Themes." + selectedTheme.Value + ";component/Themes/Telerik.Windows.Controls.DataVisualization.xaml", UriKind.RelativeOrAbsolute)
        });
        Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary
        {
            Source = new Uri("/Telerik.Windows.Themes." + selectedTheme.Value + ";component/Themes/Telerik.Windows.Controls.Docking.xaml", UriKind.RelativeOrAbsolute)
        });
        Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary
        {
            Source = new Uri("/Telerik.Windows.Themes." + selectedTheme.Value + ";component/Themes/Telerik.Windows.Controls.GridView.xaml", UriKind.RelativeOrAbsolute)
        });
        Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary
        {
            Source = new Uri("/Telerik.Windows.Themes." + selectedTheme.Value + ";component/Themes/Telerik.Windows.Controls.Pivot.xaml", UriKind.RelativeOrAbsolute)
        });
        Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary
        {
            Source = new Uri("/Telerik.Windows.Themes." + selectedTheme.Value + ";component/Themes/Telerik.Windows.Controls.PivotFieldList.xaml", UriKind.RelativeOrAbsolute)
        });
        Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary
        {
            Source = new Uri("/Telerik.Windows.Themes." + selectedTheme.Value + ";component/Themes/Telerik.Windows.Controls.VirtualGrid.xaml", UriKind.RelativeOrAbsolute)
        });
}

你在评论部分说过，有些控件没有动态改变 - 这是NoXaml库的已知问题。我可以向您推荐的是手动设置参数给那些控件。就我而言，它看起来像这样：

// Main Grid

        if (selectedTheme.Name == "Visual Studio 2013 Dark")
        {
            VisualStudio2013Palette.LoadPreset(VisualStudio2013Palette.ColorVariation.Dark);
            App.StronaGlowna.MainGrid.Background = (SolidColorBrush)new BrushConverter().ConvertFrom("#FF1E1E1E");
        }

        if (selectedTheme.Name == "Visual Studio 2013 Blue")
        {
            VisualStudio2013Palette.LoadPreset(VisualStudio2013Palette.ColorVariation.Blue);
        }

        if (selectedTheme.Name == "Visual Studio 2013")
        {
            VisualStudio2013Palette.LoadPreset(VisualStudio2013Palette.ColorVariation.Light);
            App.StronaGlowna.MainGrid.Background = Brushes.White;
        }



        if (selectedTheme.Name == "Dark")
        {
            VisualStudio2013Palette.LoadPreset(VisualStudio2013Palette.ColorVariation.Dark);
            App.StronaGlowna.MainGrid.Background = (SolidColorBrush)new BrushConverter().ConvertFrom("#FF3D3D3D");
        }

        if (selectedTheme.Name == "Green")
        {
            GreenPalette.LoadPreset(GreenPalette.ColorVariation.Dark);
            App.StronaGlowna.MainGrid.Background = (SolidColorBrush)new BrushConverter().ConvertFrom("#FF1D1E21");
        }

        if (selectedTheme.Name == "Green Light")
        {
            GreenPalette.LoadPreset(GreenPalette.ColorVariation.Light);
            App.StronaGlowna.MainGrid.Background = (SolidColorBrush)new BrushConverter().ConvertFrom("#FFE0E0E0");
        }

        if (selectedTheme.Name == "Vista" ||
            selectedTheme.Name == "Visual Studio 2013 Blue" || selectedTheme.Name == "Office Black" ||
            selectedTheme.Name == "Office Blue" ||
            selectedTheme.Name == "Office Silver" || selectedTheme.Name == "Summer" ||
            selectedTheme.Name == "Transparent" || selectedTheme.Name == "Windows 7")
        {
            App.StronaGlowna.MainGrid.Background = Brushes.White;
        }

Telerik支持在1张支持票据中提供了此解决方案。您可以在文档中找到大多数控件的十六进制颜色，例如this one is for Office2013 theme。另外，请记住，一些WPF控件不受样式的影响（我认为其中一个示例是TextBox），因此如果您使用的是vanilla WPF控件，它们可能会保持不变并要求您对新颜色进行硬编码。