RichEditBox two-way binbing does not work

Question

Hi,

I have RichEditBox and class with DependencyPropert:

public class RichTextC : DependencyObject
 {
    public static string GetRichText(DependencyObject obj)
    {
        return (string)obj.GetValue(RichTextProperty);
    }

    public static void SetRichText(DependencyObject obj, string value)
    {
        obj.SetValue(RichTextProperty, value);
    }

    public static readonly DependencyProperty RichTextProperty =
        DependencyProperty.Register("RichText", typeof(string), typeof(RichTextC), new PropertyMetadata(string.Empty, callback));

    private static void callback(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        var reb = (RichEditBox)d;
        reb.Document.SetText(TextSetOptions.FormatRtf, (string)e.NewValue);
    }
 }

And this is my RichEditBox

<RichEditBox local:RichTextC.RichText="{Binding MyRichText, Mode=TwoWay}"/>

Problem is, that View can be notified by the View Model, but when I change text in RichEditBox it not notify View Model. I mean, binding working only in one way, from View Model to View, but from View to View Model does not work.

How can I change it to two-way binding start working?

Answer 1

HI,

please refer to the link:

http://msdn.developer-works.com/article/13026721/RichTextBox+TwoWay+DataBindng

Answer 2

Thank You, but this link concern RichTextBox (Silverlight), I use RichEditBox in WinRT.

RichEditBox don't have Paragraph attribute.

Maybe is possible to bind all RichEditBox object from XAML to View Model? Then in View Model create RichEditBox  properties.