Generate invoice number through c#

In this article i will show you how to generate invoice number through c# in form of AJ0001/001, AJ0001/002 ...

    int invoiceNo = 1;
    while (Console.ReadLine() != "stop")
    {
        for (int i = 1; i <= 100; i++)
        {
            Console.WriteLine("{0}/{1}", invoiceNo.ToString("AJ0000"), i.ToString("000"));
        }
        invoiceNo++;
    }