数字和“-”（破折号）字符的正则表达式

Question

我想在asp.net中创建一个正则表达式，该正则表达式允许采用以下格式的数值

12-1234-5678-0000-1

请帮忙。 谢谢！

Answer 1

以下正则表达式将满足您的要求：

\d{2}-(?:\d{4}-){3}\d{1} 

演示版

\d{2} match a digit [0-9]
Quantifier: {2} Exactly 2 times
- matches the character - literally
(?:\d{4}-){3} Non-capturing group
Quantifier: {3} Exactly 3 times
\d{4} match a digit [0-9]
Quantifier: {4} Exactly 4 times
- matches the character - literally
\d{1} match a digit [0-9]
Quantifier: {1} Exactly 1 time (meaningless quantifier)
MATCH INFORMATION

Answer 2

string ip = "12-1234-5678-0000-1"; Match m = Regex.Match(ip, @"^[\\d]{2}\\-[\\d]{4}\\-[\\d]{4}\\-[\\d]{4}\\-[\\d]{1}$"); Console.WriteLine(m.Success);