在xbap中导入带有图像的RTF

我需要将RTF文档导入到FlowDocument中以进行进一步分析。。但我有一个非常奇怪的问题:

public string ConvertRTF(byte[] bytes)
{
    if (bytes == null)
    {
        throw new ArgumentNullException();
    }

    FlowDocument document = new FlowDocument();

    // open the file for reading
    using (MemoryStream stream = new MemoryStream(bytes, true))
    {
        // create a TextRange around the entire document
        TextRange documentTextRange = new TextRange(document.ContentStart, document.ContentEnd);
        if (documentTextRange.CanLoad(DataFormats.Rtf))
            documentTextRange.Load(stream, DataFormats.Rtf);
    }

    return XamlWriter.Save(document);

}

• Wpf独立应用程序
• Xbap应用程序 :甚至没有通过CanLoad方法…:(因此,杰克给了我这个名字。。。

有意思的是,当我用console应用程序测试它时,它在以下构造中工作正常:

[STAThread]
static void Main(string[] args)
{
    OpenFileDialog dialog = new OpenFileDialog
    {
        Filter = "import files (*.rtf)|*.rtf"
    };

    if (dialog.ShowDialog() != DialogResult.OK)
        return;


    byte[] data;
    using (Stream filestream = dialog.OpenFile())
    {
        int offset = 0;
        data = new byte[filestream.Length];
        int remaining = data.Length;
        while (remaining > 0)
        {
            int read = filestream.Read(data, offset, remaining);
            if (read <= 0)
                throw new EndOfStreamException
                    (String.Format("End of stream reached with {0} bytes left to read", remaining));
            remaining -= read;
            offset += read;
        }
    }

    FlowDocument document = new FlowDocument();

    using (MemoryStream stream = new MemoryStream(data))
    {
        // create a TextRange around the entire document
        TextRange documentTextRange = new TextRange(document.ContentStart, document.ContentEnd);
        documentTextRange.Load(stream, DataFormats.Rtf);
    }

    Console.WriteLine("test ok");
}

在某些dll版本中是否可能存在冲突?我们正在为我们的项目使用3.5 SP1。。。

有人能帮我找到上面提到的最后两种可能性之一的解决方案吗?