Програми для обліку

using System.Text.RegularExpressions;

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

foreach (Match match in Regex.Matches("text text {{111}} text {{112}} text", pattern))
    if (match.Success && match.Groups.Count > 0)
    {
        string text = match.Groups[1].Value;
        Console.WriteLine(text);
    }

string sentence = "Employee name is [{#john#}], works for [{#ABC BANK#}], [{#Houston#}]";
string pattern = @"\[\{\#(.*?)\#\}\]";

foreach (Match match in Regex.Matches(sentence, pattern))
{
    if (match.Success && match.Groups.Count > 0)
    {
        var text = match.Groups[1].Value;
        Console.WriteLine(text);
    }
}
Console.ReadLine();