'標誌在RegularExpression屬性中意味着什麼？

Question

我有這樣的正則表達式：

[RegularExpression(@"^[a-zA-Z''-'\s]{1,40}$")] 

我想知道是什麼'標誌的含義？它在這個正則表達式中的含義是什麼？

Answer 1

' 

表示它用作兩個單詞之間的分隔符，就像您在上面的代碼中一樣。

或者你可以說分離的代碼。

和'\用於將文本設置爲字符串。

[RegularExpression(@"^[a-zA-Z''-'\s]{1,40}$")] 

上面的代碼的含義：

[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 [\r\n\t\f ]