c# - 我怎样才能创建这个关于这个条件的正则表达式

Question

我想通过正则表达式做到这一点：示例： 父亲今天去拜访他的祖父和他的父亲。

如何通过正则表达式选择粗体的两个父亲？多谢。

Answer 1

我不确定为什么你需要正则表达式，因为你可以简单地“选择”你想要的字符串：

String myStr = "father";

或者，如果您需要替换字符串中的子字符串，您可以执行以下操作：

String myStr = "father goes visit his grandfather and and his father today."
myStr = myStr.Replace(" father ", " someOtherString ");

但是，如果你真的想使用 RegEx，你可以MatchCollection这样做：

String myStr = "father goes visit his grandfather and and his father today."
Regex.Mathces(myStr, "\bfather\b");

这不是一个非常有趣的正则表达式，因为它只是一个明确的字符串文字。

Answer 2

尝试这个

var matchs=Regex.matches("father goes visit his grandfather and and his father today.",@"\bfather\b");

Answer 3

var matchCollection = Regex.Matches("father goes visit his grandfather and and his father today.", "\bfather\b");

foreach (Match m in matchCollection)
{
     // Process your code for each match
}