if i have a string of text like below, how can i collect the contents of the brackets in a collection in c# even if it goes over line breaks?
eg...
string s = "test [4df] test [5yu] test [6nf]";
should give me..
collection[0] = 4df
collection[1] = 5yu
collection[2] = 6nf
You can do this with regular expressions, and a bit of Linq.
string s = "test [4df] test [5y" + Environment.NewLine + "u] test [6nf]";
ICollection<string> matches =
Regex.Matches(s.Replace(Environment.NewLine, ""), @"\[([^]]*)\]")
.Cast<Match>()
.Select(x => x.Groups[1].Value)
.ToList();
foreach (string match in matches)
Console.WriteLine(match);
Output:
4df
5yu
6nf
Here's what the regular expression means:
\[ : Match a literal [
( : Start a new group, match.Groups[1]
[^]] : Match any character except ]
* : 0 or more of the above
) : Close the group
\] : Literal ]
Regex regex = new Regex(@"\[[^\]]+\]", RegexOptions.Multiline);
关键是要正确地转义正则表达式中使用的特殊字符,例如你可以匹配[
字符这样: @"\\["
Regex rx = new Regex(@"\[.+?\]");
var collection = rx.Matches(s);
You will need to trim the square brackets off, the important part is the lazy operator.
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