How to filter data of a particular type in ArrayList?

using System.Linq;
using System.Text;
using System.Collections;
    class Class4
    {
        static void Main()
        {
            //Filter integer values from an arraylist
            //Use the OfType function
            ArrayList t = new ArrayList();
            t.Add("one");
            t.Add(300);
            t.Add(100);
            t.Add(345.55);
            var q = t.OfType<int>();
            foreach (var z in q)
            {
                Console.WriteLine(z);
            }
        }
    }