How to bind a TextBlock to a resource containing formatted text?

Question

I have a TextBlock in my WPF window.

 
     Some formatted text.
 

When it is r

Answer 1

This work for me:

XAML:

<phone:PhoneApplicationPage x:Class="MyAPP.Views.Class"
                        xmlns:utils="clr-namespace:MyAPP.Utils">

and your TextBlock XAML:

<TextBlock utils:TextBlockHelper.FormattedText="{Binding Text}" />

CODE:

public static class TextBlockHelper
{
    public static string GetFormattedText(DependencyObject textBlock)
    { 
        return (string)textBlock.GetValue(FormattedTextProperty); 
    }

    public static void SetFormattedText(DependencyObject textBlock, string value)
    { 
        textBlock.SetValue(FormattedTextProperty, value); 
    }

    public static readonly DependencyProperty FormattedTextProperty =
        DependencyProperty.RegisterAttached("FormattedText", typeof(string), typeof(TextBlock),
        new PropertyMetadata(string.Empty, (sender, e) =>
        {
            string text = e.NewValue as string;
            var textB1 = sender as TextBlock;
            if (textB1 != null)
            {
                textB1.Inlines.Clear();
                var str = text.Split(new string[] { "<b>", "</b>" }, StringSplitOptions.None);
                for (int i = 0; i < str.Length; i++)
                    textB1.Inlines.Add(new Run { Text = str[i], FontWeight = i % 2 == 1 ? FontWeights.Bold : FontWeights.Normal });

            }
        }));
}

USE in your string binding:

String Text = Text <b>Bold</b>;