将格式化文本数据绑定到silverlight 4中的richtextbox

Question

我需要将格式化文本数据绑定到RichTextBox。对于格式化，我似乎必须创建一系列具有特定格式的运行，然后将它们添加到段落并将其添加到RichTextBox上的blocks属性中。我试图将段属性绑定到Blocks，但它似乎不允许这样。段落没有将其绑定到运行列表的项目源。我怎样才能将运行列表数据绑定到RichTextBox小部件？

由于

Answer 1

这是我提出的解决方案。我创建了一个自定义的RichTextViewer类，并继承自RichTextBox。

using System.Windows.Documents;
using System.Windows.Markup;
using System.Windows.Media;

namespace System.Windows.Controls
{
    public class RichTextViewer : RichTextBox
    {
        public const string RichTextPropertyName = "RichText";

        public static readonly DependencyProperty RichTextProperty =
            DependencyProperty.Register(RichTextPropertyName,
                                        typeof (string),
                                        typeof (RichTextBox),
                                        new PropertyMetadata(
                                            new PropertyChangedCallback
                                                (RichTextPropertyChanged)));

        public RichTextViewer()
        {
            IsReadOnly = true;
            Background = new SolidColorBrush {Opacity = 0};
            BorderThickness = new Thickness(0);
        }

        public string RichText
        {
            get { return (string) GetValue(RichTextProperty); }
            set { SetValue(RichTextProperty, value); }
        }

        private static void RichTextPropertyChanged(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs dependencyPropertyChangedEventArgs)
        {
            ((RichTextBox) dependencyObject).Blocks.Add(
                XamlReader.Load((string) dependencyPropertyChangedEventArgs.NewValue) as Paragraph);

        }
    }
}