使用正则表达式按{curly}子字符串拆分字符串，但包含{}

Question

I have this string:

var s = "Cat{biscuits}Flaps";

Output should be:

Cat
{biscuits}
Flaps

I can iterate over this:

Regex.Split(input, @"{(?<p>[^}]*)}");

However it removes the { } from biscuits

Can you suggest a regex that includes the { } to give the output above?

Answer 1

Use a capturing group around the whole pattern:

var chunks = Regex.Split(input, @"({[^}]*})");
                                  ^       ^  

See the C# demo :

var s = "Cat{biscuits}Flaps";
var chunks = Regex.Split(s, @"({[^}]*})");
Console.WriteLine(string.Join("\n", chunks));

See Regex.Split reference :

If capturing parentheses are used in a Regex.Split expression, any captured text is included in the resulting string array.