如何显示一个RichTextBox C＃中的行数 [英] How to show number of a line in a RichTextBox C#
问题描述
我正在使用的代码高亮一个简单的文本和脚本编辑器。对于我使用一个RichTextBox。但我不知道如何使它显示在左侧的线'号，就像在VS或记事本+ +。有没有什么解决办法吗？
I am making a simple text and script editor with code highlighting. For that I use a RichTextBox. But I don't know how to make it show the lines' numbers on the left side, like in VS or Notepad++. Is there any solution?
推荐答案
我试图重新使用从其他地方引用的CodeProject上的文章的代码，但我看着每一个选项，显得有点太缺憾。
I tried re-using the code from the codeproject articles referenced elsewhere, but every option I looked at, seemed a bit too kludgy.
所以，我建立了一个显示行数另一个RichTextBoxEx。
So I built another RichTextBoxEx that displays line numbers.
行编号可开启或关闭。这是快。它滚动干净。可以选择数字，背景颜色的梯度，边界厚度，字体的颜色，是否使用前导零。您可以选择行数为显示或根据在RTB硬换行。
The line numbering can be turned on or off. It's fast. It scrolls cleanly. You can select the color of the numbers, the background colors for a gradient, the border thickness, the font, whether to use leading zeros. You can choose to number lines "as displayed" or according to the hard newlines in the RTB.
例如：
它的局限性：它只能在左边显示的数字。你可以改变没有太多精力，如果你在意。
It has limitations: it displays numbers only on the left. You could change that without too much effort if you cared.
中的代码被设计为C＃项目。虽然这是一个更大的解决方案（一个XPath可视化工具）的一部分，自定义的RichTextBox打包为一个可分离的组件，并准备在新项目中使用。在Visual Studio中，只需添加一个参考的DLL，你可以拖动和拖放到您的设计上。你可以丢弃的大型解决方案的其他代码。
The code is designed as C# project. Though it's part of a larger "solution" (an XPath Visualization tool), the custom RichTextBox is packaged as a separable assembly, and is ready to use in your new projects. In Visual Studio, just add a reference to the DLL, and you can drag-and-drop it onto your design surface. You can just discard the other code from the larger solution.
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