我有一个正则表达式：
[RegularExpression(@"^[a-zA-Z''-'s]{1,40}$")]
我想知道'符号是什么意思？它在正则表达式中的含义是什么？
'
意思是它用作两个单词之间的分隔符，就像您在上面的代码中使用的一样。
或者你可以说代码的分离。
和'\use用于将文本设置为字符串。
[RegularExpression(@"^[a-zA-Z''-'s]{1,40}$")]
以上代码含义：
[a-zA-Z''-'s]{1,40} match a single character present in the list below
Quantifier: {1,40} Between 1 and 40 times, as many times as possible, giving back as needed [greedy]
a-z a single character in the range between a and z (case sensitive)
A-Z a single character in the range between A and Z (case sensitive)
' the literal character '
'-' a single character in the range between ' and '
s match any white space character [rntf ]