Yield Keyword in CSharp example

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Yield_Keyword_in_CSharp
{
    class Program
    {

        static void printListValue(IEnumerable lst)
        {
            foreach (var item in lst)
            {
                 Console.WriteLine("Value: " + item);
            }
        }


        static IEnumerable getListValue()
        {
            
            List temp = new List();
            for (int i = 0; i < 10; i++)
            {
                if (i > 5)
                {
                   temp.Add(i);
                }
                Console.WriteLine("Counter:" + i );
            }
            return temp;
        }


        //static List getListValueYield()
        //Error CS1624  The body of 'Program.getListValueYield()' cannot be an iterator block because 'List' is not an iterator interface type.

        //return temp;
        //Error CS1622  Cannot return a value from an iterator.Use the yield return statement to return a value, or yield break to end the iteration.


        static IEnumerable getListValueYield()
        {
            
            List temp = new List();
            for (int i = 0; i < 10; i++)
            {
                if (i > 5)
                {
                    yield return i;
                }
                Console.WriteLine("Counter:" + i);
            }
        }


        static void Main(string[] args)
        {
           
            printListValue(getListValue());
            //Counter: 0
            //Counter: 1
            //Counter: 2
            //Counter: 3
            //Counter: 4
            //Counter: 5
            //Counter: 6
            //Counter: 7
            //Counter: 8
            //Counter: 9
            //Value: 6
            //Value: 7
            //Value: 8
            //Value: 9

            printListValue(getListValueYield());
            //Counter: 0
            //Counter: 1
            //Counter: 2
            //Counter: 3
            //Counter: 4
            //Counter: 5
            //Value: 6
            //Counter: 6
            //Value: 7
            //Counter: 7
            //Value: 8
            //Counter: 8
            //Value: 9
            //Counter: 9

            Console.Read();
        }
    }
}