Question

How can I get numbers between brackets of this text with regex in C#?
sample text :

“[1]Ali ahmadi,[2]Mohammad Razavi”
result is : 1,2

My C# code is :

string result = null;
string[] digits = Regex.Split(Text, @"[\d]");
foreach (string value in digits)
{
    result += value + ",";
}
return result.Substring(0,result.Length - 1);

Answer 1

string s = "[1]Ali ahmadi,[2]Mohammad Razavi";
Regex regex = new Regex(@"\[(\d+)\]", RegexOptions.Compiled);
foreach (Match match in regex.Matches(s))
{
  Console.WriteLine(match.Groups[1].Value);
}

This will capture the numbers between brackets (\d+), and store them in the first matched group (Groups[1]).

DEMO.