/// <summary>
        /// Method to generate Credit card Number
        /// </summary>
        static void GenerateCreditCard()

        {
            CreditCard cr = new CreditCard();                                      //creating object to creditcard

            CreditcardBusinessLogicLayer cbl = new CreditcardBusinessLogicLayer(); //creating object to Creditcard businesslogic layer
            int a;

            Console.WriteLine("Enter CustomerID");
            a = int.Parse(Console.ReadLine());


            Customer l = cbl.GetCustomersByCustomerId(a);

            //cr.Customer = l;

            string CreditCardNumber = cbl.GenerateCreditCard(a);

            Console.WriteLine("Your CreditCard Number is " + CreditCardNumber);
        }
        /// <summary>
        /// Method to Approve credit card
        /// </summary>
        static void ApproveCreditCard()
        {
            CreditCard cr = new CreditCard();                                      //Creating object to creditcard

            CreditcardBusinessLogicLayer cbl = new CreditcardBusinessLogicLayer(); //Creating object to Creditcard BusinessLogicLayer
            int a;

            Console.WriteLine("Enter CustomerID");
            a = int.Parse(Console.ReadLine());

            bool b = cbl.ApproveCreditCard(a);

            if (b == true)//checking the condition for approval which is called from businesslogic layer of creditcard
            {
                Console.WriteLine("You are eligible to approve credit card");
            }
            else
            {
                Console.WriteLine("You are not eligible to approve credit card");
            }
        }
        /// <summary>
        /// Method to Request for Creditcard Limit Increase
        /// </summary>
        static void RequestToIncreaseCreditCardLimit()
        {
            CreditCard cr = new CreditCard();                                      //creating object to creditcard

            CreditcardBusinessLogicLayer cbl = new CreditcardBusinessLogicLayer(); //creating object to creditcard businesslogic layer
            int a;

            Console.WriteLine("Enter CustomerID");
            a = int.Parse(Console.ReadLine());

            bool b = cbl.RequestToIncreaseCreditCardLimit();

            if (b == true)//checking the condition for acceptance of increasing creditcard limit
            {
                Console.WriteLine("Your CreditCard Number generated successfully ");
            }
            else
            {
                Console.WriteLine("Your Creditcard number generation is in progress");
            }
        }
        /// <summary>
        /// Method to Update Credit card status
        /// </summary>
        static void UpdateCreditCard()
        {
            CreditCard cr = new CreditCard();                                      //creating object to creditcard

            CreditcardBusinessLogicLayer cbl = new CreditcardBusinessLogicLayer(); //creating object to creditcard business logic layer

            int a;

            Console.WriteLine("Enter CustomerID");
            a = int.Parse(Console.ReadLine());

            bool b = cbl.UpdateCreditCard(a);

            if (b == true)//checking the status of creditcardnumber
            {
                Console.WriteLine("Your CreditCard Number generated successfully ");
            }
            else
            {
                Console.WriteLine("Your Creditcard number generation is in progress");
            }
        }
        /// <summary>
        /// Method to Apply Customer details for credit card
        /// </summary>
        static void ApplyCreditCard()

        {
            //Creates object to Creditcard class
            CreditCard cr = new CreditCard();

            //Creates object to CreditCardBusinessLogicLayer
            CreditcardBusinessLogicLayer cbl = new CreditcardBusinessLogicLayer();

            int a;

            Console.WriteLine("Enter CustomerID"); //Reading Customer Id from keyboard
            a = int.Parse(Console.ReadLine());     //Stores Customer Id into variable a


            Customer l = cbl.GetCustomersByCustomerId(a);//getting details by Id and assigns into object l

            //cr.Customer = l;

            int AppNumber = cbl.ApplyCreditCard(a);

            Console.WriteLine("Your Application Number is " + AppNumber);
        }