implementing-wpf-rtl-support

WPF RTL (Right-to-Left) Support

Implement bidirectional text and mirrored layouts for RTL languages.

1. RTL Languages

2. Setting FlowDirection

2.1 Window Level

<!-- Left-to-Right (default) -->
<Window FlowDirection="LeftToRight"
        Title="My Application">

<!-- Right-to-Left -->
<Window FlowDirection="RightToLeft"
        Title="التطبيق">

2.2 Element Level

<Window FlowDirection="RightToLeft">
    <StackPanel>
        <!-- Inherits RTL from parent -->
        <TextBlock Text="مرحبا بالعالم"/>

        <!-- Override to LTR for specific content -->
        <TextBlock FlowDirection="LeftToRight"
                   Text="[email protected]"/>
    </StackPanel>
</Window>

2.3 Resource-Based

<Window FlowDirection="{DynamicResource AppFlowDirection}">

<!-- In ResourceDictionary -->
<FlowDirection x:Key="AppFlowDirection">RightToLeft</FlowDirection>

3. Dynamic FlowDirection

3.1 Based on Culture

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        SetFlowDirection();
    }

    private void SetFlowDirection()
    {
        var culture = Thread.CurrentThread.CurrentUICulture;
        FlowDirection = culture.TextInfo.IsRightToLeft
            ? FlowDirection.RightToLeft
            : FlowDirection.LeftToRight;
    }
}

3.2 Language Switching

public void SwitchLanguage(string cultureName)
{
    var culture = new CultureInfo(cultureName);

    Thread.CurrentThread.CurrentCulture = culture;
    Thread.CurrentThread.CurrentUICulture = culture;

    // Update FlowDirection
    Application.Current.MainWindow.FlowDirection =
        culture.TextInfo.IsRightToLeft
            ? FlowDirection.RightToLeft
            : FlowDirection.LeftToRight;
}