using System;

using System.Text.RegularExpressions;

​

public class Program

{

    public static void Main()

    {

        string input = "(aaa);(bbb)";

        string pattern = @"\((.*?)\)";

​

        MatchCollection matches = Regex.Matches(input, pattern);

        if (matches.Count > 0)

        {

            Console.WriteLine("Matched Text: " + matches[0].Value);

            Console.WriteLine("Extracted Text: " + matches[0].Groups[1].Value);

​

            Console.WriteLine("Matched Text: " + matches[1].Value);

            Console.WriteLine("Extracted Text: " + matches[1].Groups[1].Value);

        }

        else

        {

            Console.WriteLine("No match found.");

        }

    }

}