For While, For, While, For Each untuk c#

cara membuar for , while , dow while, for each :
1. buka visual studio
2. buka form Console Application visual #c

setelah muncul gambar diatas masukan koding/code seperti ini :

int number = 0;
            Console.WriteLine("while");
            while (number < 5)
            {
                Console.WriteLine(number);
                number = number + 1;
            }
            Console.WriteLine("=========================================");
            Console.WriteLine("For loop");
            for (int i = 0; i < number; i++)
            {
                Console.WriteLine(i);
            }
            Console.WriteLine("==========================================");
            Console.WriteLine("Foreach loop");
            {
                ArrayList list = new ArrayList();
                list.Add("John Doe");
                list.Add("Jane Doe");
                list.Add("Someone Else");

                foreach (string name in list)
                    Console.WriteLine(name);
            }
            Console.WriteLine("==========================================");
            Console.WriteLine("Do while");
            int[] ids = new int[] { 6, 7, 8, 10 };

            int sum = 0;
            int i = 0;
            do
            {
                sum += ids[i];
                i++;
            } while (i < 4);

            System.Console.WriteLine(sum);
            Console.ReadLine();

lalu klik start, dan akan muncul form baru  berwarna hitam

SELESAI:)