Question

I would like to return a array string[] or a list List<string> using regex.

I want to compare a string and return all values that starts with [ and end with ].

I am new to regex, so would you please explain the syntax that you will be using to produce the right results.

Answer 1

var result = Regex.Matches(input, @"\[([^\[\]]*)\]")
    .Cast<Match>()
    .Select(m => m.Groups[1].Value).ToArray();

This regex \[([^\[\]]*)\] means:

1. \[ – character [
2. ([^\[\]]*) – any character, excluding [] any number of repetitions, group 1
3. \] – character ]

Update:

var result = Regex.Matches(input, @"\[[^\[\]]*\]")
    .Cast<Match>()
    .Select(m => m.Value).ToArray();