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

The same I have implemented using Behavior. Code given below:

public class FormatTextBlock : Behavior
{
    public static readonly DependencyProperty FormattedTextProperty = 
        DependencyProperty.Register(
            "FormattedText", 
            typeof(string),
            typeof(FormatTextBlock),
            new PropertyMetadata(string.Empty, OnFormattedTextChanged));

    public string FormattedText
    {
        get { return (string)AssociatedObject.GetValue(FormattedTextProperty); }
        set { AssociatedObject.SetValue(FormattedTextProperty, value); }
    }

    private static void OnFormattedTextChanged(DependencyObject textBlock, DependencyPropertyChangedEventArgs eventArgs)
    {
        System.Windows.Controls.TextBlock currentTxtBlock = (textBlock as FormatTextBlock).AssociatedObject;

        string text = eventArgs.NewValue as string;

        if (currentTxtBlock != null)
        {
            currentTxtBlock.Inlines.Clear();

            string[] strs = text.Split(new string[] { "", "" }, StringSplitOptions.None);

            for (int i = 0; i < strs.Length; i++)
            {
                currentTxtBlock.Inlines.Add(new Run { Text = strs[i], FontWeight = i % 2 == 1 ? FontWeights.Bold : FontWeights.Normal });
            }
        }
    }
}

XAML - import namespace

Then to use the behavior as: