I got a string which can has a part which looks like this: "1.0.0" but it can also look like this "1.0.0.0" and these are the parts I need out of the string. I tried using this regular expression:
我有一个字符串，它可以有一个像这样的部分"1。0"但是它也可以像这个"1。0。0"这些是我需要的字符串的部分。我试着用这个正则表达式:
var dotPart = Regex.Match(infoString, @"(\d+)\.(\d+)\.(\d+)(\.d+)*");
This works fine on "1.0.0" but not on "1.0.0.0" which then returns only the first 3 digits instead of the last. How do I fix my pattern? And for general knowledge, what is wrong with the pattern I wrote?
这在“1.0.0”上很有效，但在“1.0.0.0”上就不行，因为“1.0.0”只返回前3位，而不是前3位。如何修正我的模式?对于一般的知识，我写的模式有什么问题?
2 个解决方案
#1
3
You missed the last backslash in \d:
你错过了最后一个斜杠在\d:
var dotPart = Regex.Match(infoString, @"(\d+)\.(\d+)\.(\d+)(\.\d+)*");
#1
3
You missed the last backslash in \d:
你错过了最后一个斜杠在\d:
var dotPart = Regex.Match(infoString, @"(\d+)\.(\d+)\.(\d+)(\.\d+)*");