Clearing LIST in C#
The Method clear() will be used to clear the contents of a list. 

using System;
using System.Collections.Generic;

namespace forgetCode
{
    class program
    {
        public static void Main()
        {
            List<int> list = new List<int>();
            list.Add(1);
            list.Add(2);
            list.Add(3);
            //Before clearing
            Console.WriteLine("Before clearing: "+list.Count);
            list.Clear();
            //After clearing
            Console.WriteLine("After clearing: "+list.Count);
        }
    }
}


Output:
Before clearing: 3
After clearing: 0