regex-digits.cs

using System;
using System.Text.RegularExpressions;

public class Example
{
   public static void Main()
   {
      string pattern = "^\\d+$";
      string numbers = "௫๓௫๓";
                        
      
      foreach (Match match in Regex.Matches(numbers, pattern))
              Console.WriteLine("{0}", match.Value);
   }
}