WPF TextBlock：框选择和多行编辑
This is my first challenge with WPF.
I'm looking into the possibility of having Box Selection and Multi-line editing on a WPF TextBox.
Do you know if it is possible and if someone has already build this? Any pointers into the right direction are very much appreciated!
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查看 AvalonEdit： http://www.codeproject.com/KB/edit/AvalonEdit .aspx 它是操作系统，互操作非常简单。
Have a look to AvalonEdit: http://www.codeproject.com/KB/edit/AvalonEdit.aspx it is OS and very simple to interoperate.