https://pt.stackoverflow.com/q/78471/101

CSharp · Console

/Program.cs

    using System;
    using System.Linq;
    					
    public class Program {
    	public static void Main() {
    		var lista = "1, 2, 3".Split(',').Select(int.Parse).ToList();
   			Console.WriteLine(lista.GetType());
    		foreach (var item in lista) {
    			Console.WriteLine(item);
    		}
    	}
    }