using System;

using System.Collections.Generic;

using System.Linq;

​

public static class StringExtensions

{

    public static IEnumerable<T> Split<T>(this string input, string[] separator, int count, StringSplitOptions options)

    {

        IEnumerable<T> result;

​

        if (string.IsNullOrWhiteSpace(input))

        {

            result = Enumerable.Empty<T>();

        }

        else

        {

            string[] items = input.Split(separator, count, options);

            var list = new T[items.Length];

​

            for(int i = 0; i < items.Length; i++)

            {

                try

                {

                    if (Convert.ChangeType(items[i], typeof(T)) is T output)

                    {

                        list[i] = output;

                    }

                }

                catch (Exception) { }

            }

​

            result = list.Where(i => i != null);

        }

​

        return result;

    }

}

public class Program

{

    public static void Main()

    {

        string input = "1,2,3,4";

        foreach(decimal output in input.Split<int>(new string[] {","}, int.MaxValue, StringSplitOptions.None))

        {

            Console.WriteLine(output);

        }

    }

}