silverlight - Silverlight RichTextBox 中的 XAML 标记大小过大

Question

我在 Silverlight 5 应用程序中有一个非常简单的 RichTextBox 控件。

<RichTextBox x:Name="rtbControl" 
    Height="Auto" 
    ContentChanged="rtbControl_ContentChanged" />

随着数据的更改，我将其捕获在局部变量中，如下所示:

    private void rtbControl_ContentChanged(object sender, ContentChangedEventArgs e)
    {
        RichTextContent = rtbControl.Xaml;
    }

所有作品。但是，如果我只输入几个字并检查 <Paragraph>标记，它是巨大的!下面是一个片段。有没有办法在标记中不包含所有的排版内容？为什么它在那里并且需要它？有没有办法去除它？

<Section xml:space="preserve" HasTrailingParagraphBreakOnPaste="False" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
<Paragraph FontSize="11" FontFamily="Segoe UI" Foreground="#FF000000" FontWeight="Normal" FontStyle="Normal" FontStretch="Normal" 
CharacterSpacing="0" Typography.AnnotationAlternates="0" Typography.EastAsianExpertForms="False" Typography.EastAsianLanguage="Normal" 
Typography.EastAsianWidths="Normal" Typography.StandardLigatures="True" Typography.ContextualLigatures="True" 
Typography.DiscretionaryLigatures="False" Typography.HistoricalLigatures="False" Typography.StandardSwashes="0" Typography.ContextualSwashes="0" 
Typography.ContextualAlternates="True" Typography.StylisticAlternates="0" Typography.StylisticSet1="False" Typography.StylisticSet2="False"
 Typography.StylisticSet3="False" Typography.StylisticSet4="False" Typography.StylisticSet5="False" Typography.StylisticSet6="False" Typography.StylisticSet7="False" 
Typography.StylisticSet8="False" Typography.StylisticSet9="False" Typography.StylisticSet10="False" Typography.StylisticSet11="False" 
Typography.StylisticSet12="False" Typography.StylisticSet13="False" Typography.StylisticSet14="False" Typography.StylisticSet15="False" 
Typography.StylisticSet16="False" Typography.StylisticSet17="False" Typography.StylisticSet18="False" Typography.StylisticSet19="False" 
Typography.StylisticSet20="False" Typography.Capitals="Normal" Typography.CapitalSpacing="False" Typography.Kerning="True" Typography.CaseSensitiveForms="False" 
Typography.HistoricalForms="False" Typography.Fraction="Normal" Typography.NumeralStyle="Normal" Typography.NumeralAlignment="Normal" Typography.SlashedZero="False"
 Typography.MathematicalGreek="False" Typography.Variants="Normal" TextOptions.TextHintingMode="Fixed" TextOptions.TextFormattingMode="Ideal" 
TextOptions.TextRenderingMode="Auto" TextAlignment="Left" LineHeight="0" LineStackingStrategy="MaxHeight"><Run>was it a </Run><Run TextDecorations="Underline">bad 
</Run><Run>blah? or </Run></Paragraph></section>

Answer 1

我想我会分享我的解决方案来帮助其他人......它已经存在几个月了，我还没有看到任何不良副作用。

我创建了一些扩展方法来帮助删除 Typography 属性。

public static class RichTextBoxExtensions {
        // <summary>
        /// Removes any xml tag with the prefix given from a string
        /// </summary>
        /// <param name="XMLString"></param>
        /// <param name="TagPrefix"></param>
        /// <returns></returns>
        public static string RemoveXMLAttributesFromNode(this string XMLString, string prefix)
        {
            //Match [Prefix][any number of Not =][=]["][any number of Not "]["][ ] <-must have space!!!
            string replace = prefix + "[^\\=]*=\"[^\"]*\" ";
            return Regex.Replace(XMLString, replace, string.Empty);
        }
        /// <summary>
        /// Removes any xml tag with prefixed by an element in unWanted
        /// </summary>
        /// <param name="XMLString"></param>
        /// <param name="TagPrefix"></param>
        /// <returns></returns>
        public static string RemoveXMLAttributesFromNode(this string XMLString, List<string> unWanted)
        {

            foreach (string prefix in unWanted)
            {
                //Match [Prefix][any number of Not =][=]["][any number of Not "]["][ ] <-must have space!!!
                string replace = prefix + "[^\\=]*=\"[^\"]*\" ";
                XMLString = Regex.Replace(XMLString, replace, string.Empty);
            }
            return XMLString;
        }

接下来，就在我将字符串保存到数据库之前，我删除了错误的属性，如下所示:

        List<string> badAttributes = new List<string>();
        badAttributes.Add("Typography");
        var ffText = ffi.FreeFormText == null ? null : ffi.FreeFormText.RemoveXMLAttributesFromNode(badAttributes);

在删除这些属性后重新渲染 RTF 时，我没有看到任何问题。希望这个解决方案可以帮助某人!