c# - 选择粗体文本

Question

我只需要在 winform 应用程序的 RichTextBox 中选择粗体文本，然后将其括在方括号中:例如:The <strong>Rollup Action</strong> element describes the desired action that should be applied to the cluster activity that defines the <strong>Rollup Rule</strong> .
粗体文本将变为:<br/>[<strong>Rollup Action</strong>] [<strong>Rollup Rule</strong>] .谢谢。

Answer 1

一种解决方案是使用 Regex 查找粗体文本并将其替换为相同的内容但添加了括号:

  richTextBox.Rtf = Regex.Replace(richTextBox.Rtf, @"\\b ((\w| )*)", RegExSample.AddBrackets);

和 MatchEvaluator:

public class RegExSample
{
      public static string AddBrackets(Match match)
      {
           return String.Format("[{0}]", match.Value);
      }
}

您的样本的输出将是:

The [Rollup Action] element describes the desired action that should be applied to the cluster activity that defines the [Rollup Rule]

您还可以更新正则表达式以确保它在所有情况下都能正常工作。