Bindable Run

Extendend Version

public static class BindableExtender {
    public static string GetBindableText(DependencyObject obj) {
        return (string)obj.GetValue(BindableTextProperty);
    }

    public static void SetBindableText(DependencyObject obj,
        string value) {
        obj.SetValue(BindableTextProperty, value);
    }

    public static readonly DependencyProperty BindableTextProperty =
        DependencyProperty.RegisterAttached("BindableText",
            typeof(string),
            typeof(BindableExtender),
            new UIPropertyMetadata(null,
                BindableTextProperty_PropertyChanged));

    private static void BindableTextProperty_PropertyChanged(
        DependencyObject dependencyObject,
        DependencyPropertyChangedEventArgs e) {
        if (dependencyObject is Run) {
            ((Run)dependencyObject).Text = (string)e.NewValue;
        }
    }
}

Inherit version

    public class BindableRun : Run
    {
        public static readonly DependencyProperty BoundTextProperty = DependencyProperty.Register("BoundText", typeof(string), typeof(BindableRun), new PropertyMetadata(new PropertyChangedCallback(BindableRun.onBoundTextChanged)));

        private static void onBoundTextChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            ((Run)d).Text = (string)e.NewValue;
        }

        public String BoundText
        {
            get { return (string)GetValue(BoundTextProperty); }
            set { SetValue(BoundTextProperty, value); }
        }
    }

Usage

<Run local:BindableExtender.BindableText="{Binding Title}" />

usage

<Controls:BindableRun BoundText="{l:Translate support}"/>