ArrayList'in belirli bir class tipindeki Array'a dönüşümü.

namespace ConsoleApplication1
{
    class MyClass
    {
        public int rid { get; set; }
        public string val1 { get; set; }

        public MyClass(int rid, string val1)
        {
            this.rid = rid;
            this.val1 = val1;
        }
    }

    class Program
    {
        static void test1(int sayi, params MyClass[] veriler)
        {
            Console.WriteLine("ok");
        }

        static void Main(string[] args)
        {
            ArrayList al = new ArrayList();
            al.Add(new MyClass(1, "ali"));
            al.Add(new MyClass(2, "veli"));
            al.Add(new MyClass(3, "cemal"));

            //String[] x = al.ToArray(typeof(String)) as String[];

            test1(12, al.ToArray(typeof(MyClass)) as MyClass[]);
        }
    }
}