WPF语法高亮控件AvalonEdit
AvalonEdit is a WPF-based extensible text editor.
AvalonEdit是基于WPF的可扩展的文本编辑器。
While the WPF RichTextBox is quite powerful, you quickly run into its limits when trying to use it as a code editor: it's hard to write efficient syntax highlighting for it, and you cannot really implement features like code folding with the standard RichTextBox.
虽然WPF的RichTextBox功能很强，使用它当代码编辑器时运行迅速。但用它写有效的语法高亮文本还是比较困难，并且不能真正实现像代码折叠之类的特性。
The problem is: the RichTextBox edits a rich document. In contrast, AvalonEdit simply edits text.
问题有：RichTextBox是一个富文档编辑器，与此不同的是，AvalonEdit是一个简单文本编辑器。
However, AvalonEdit offers lots of possibilities on how the text document is displayed - so it is much more suitable for a code editor where things like the text color are not controlled by the user, but instead depend on the text (syntax highlighting).
然而，AvalonEdit为如何显示文档提供了多种可能性，比如文本颜色不是由用户控制，而是依赖于文本（语法高亮）的情况，所以它作为代码编辑器是非常合适的。
AvalonEdit was written for the SharpDevelop IDE. It replaces our old Windows Forms-based text editor (ICSharpCode.TextEditor).
AvalonEdit 是为SharpDevelop IDE而开发的编辑器，它代替了传统windows 面向表单文本的编辑器（ICSharpCode.TextEditor）。
The main class of the editor is ICSharpCode.AvalonEdit.TextEditor. You can use it similar to a normal WPF TextBox:
编辑器的主要类是ICSharpCode.AvalonEdit.TextEditor，可以用它来写一个简单的WPF文本框控件。
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There are two versions of AvalonEdit - the normal one requires .NET Framework 4.0 or higher; but we also offer a modified version for .NET 3.5 SP1. For compiling AvalonEdit, you will need a C# 4.0 compiler (SharpDevelop 4.x or Visual Studio 2010).
AvalonEdit有两个版本，普通版需要.Net Framework 4.0或更高版本的支持，另外也提供了基于.Net 3.5 SP1的改良版。编译AvalonEdit时，需要C#4.0的编辑器。(SharpDevelop 4.x 或 Visual Studio 2010).
private static FoldingManager foldingManager = null;private static XmlFoldingStrategy foldingStrategy = new XmlFoldingStrategy();//快速搜索txtTemplateContent.TextArea.DefaultInputHandler.NestedInputHandlers.Add(new SearchInputHandler(txtTemplateContent.TextArea));//显示行号 txtTemplateContent.ShowLineNumbers = true;//默认语法高亮规则txtTemplateContent.SyntaxHighlighting = HighlightingManager.Instance.GetDefinitionByExtension(".xml");//折叠foldingManager = FoldingManager.Install(txtTemplateContent.TextArea);txtTemplateContent.Text = DispContentValue;foldingStrategy.UpdateFoldings(foldingManager, txtTemplateContent.Document);
应用语法高亮读取xslt文档效果如下：
