在 C# 中拆分字符串
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Splitting a string in C#
提问by user1875195
I am trying to split a string in C# the following way:
我正在尝试按以下方式在 C# 中拆分字符串：
Incoming string is in the form
传入字符串的形式
string str = "[message details in here][another message here]/n/n[anothermessage here]"
And I am trying to split it into an array of strings in the form
我正在尝试将其拆分为表单中的字符串数组
string[0] = "[message details in here]"
string[1] = "[another message here]"
string[2] = "[anothermessage here]"
I was trying to do it in a way such as this
我试图以这样的方式做到这一点
string[] split = Regex.Split(str, @"\[[^[]+\]");
But it does not work correctly this way, I am just getting an empty array or strings
但它不能以这种方式正常工作，我只是得到一个空数组或字符串
Any help would be appreciated!
任何帮助，将不胜感激！
采纳答案by Guffa
Use the Regex.Matchesmethod instead:
改用该Regex.Matches方法：
string[] result =
Regex.Matches(str, @"\[.*?\]").Cast<Match>().Select(m => m.Value).ToArray();
回答by p.s.w.g
The Splitmethod returns sub strings betweenthe instances of the pattern specified. For example:
该Split方法返回指定模式实例之间的子字符串。例如：
var items = Regex.Split("this is a test", @"\s");
Results in the array [ "this", "is", "a", "test" ].
结果在数组中[ "this", "is", "a", "test" ]。
The solution is to use Matchesinstead.
解决办法是Matches改用。
var matches = Regex.Matches(str, @"\[[^[]+\]");
You can then use Linq to easily get an array of matched values:
然后，您可以使用 Linq 轻松获取匹配值的数组：
var split = matches.Cast<Match>()
.Select(m => m.Value)
.ToArray();
回答by Brian Surowiec
Instead of using a regex you could use the Splitmethod on the string like so
您可以Split像这样在字符串上使用该方法，而不是使用正则表达式
Split(new[] { '\n', '[', ']' }, StringSplitOptions.RemoveEmptyEntries)
You'll loose [and ]around your results with this method but it's not hard to add them back in as needed.
你会失去[和]周围的结果与此方法，但它不是很难将其添加回去需要。
回答by Kenneth K.
Another option would be to use lookaround assertions for your splitting.
另一种选择是使用环视断言进行拆分。
e.g.
例如
string[] split = Regex.Split(str, @"(?<=\])(?=\[)");
This approach effectively splits on the void between a closing and opening square bracket.
这种方法有效地分割了右方括号和左方括号之间的空白。
