using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var test = "Hello,,World,".Split(new char[]{','}, System.StringSplitOptions.RemoveEmptyEntries).Select(s=>s.Trim());

        foreach(string str in test)

        {

            Console.WriteLine(str); 

        }   

    }

}