C# Cancel delivery of a letter with CancelDelivery() PostalMethods

Instructions

Create a new Console Application project and add a web reference.
Copy the entire code below, delete anything written in your application and paste the code there.
Replace the values of the Const lines with your details:
- Replace MyUsername and MyPassword with your PostalMethods user details.
- Replace “ID” with the ID of the letter or postcard you would like to cancel.
Start your application. If the response is -3000, you will see the status report. If the response is any other number, check the Web Service Status Codes section.

using System;
 
namespace ConsoleApplication1
{
    class CancelDelivery
    {
 
        public static void Main()
        {
            const string MyUsername = "MyUsername";
            const string MyPassword = "MyPassword";
            const int ID = 0;
 
            com.postalmethods.api.PostalWS objPM = new com.postalmethods.api.PostalWS();
            long lngResult = 0;
 
            //
            // Invoke the GetLetterStatus_Multiple method
            //
            lngResult = objPM.CancelDelivery(MyUsername, MyPassword, ID);
 
            //
            // Check response status
            //
            if (lngResult == -3000)
            {
                //
                // -3000 means the request was successfully marked for cancellation.
                //
                Console.WriteLine("Request has been cancelled");
            }
            else
            {
                //
                // A value less than -3000 means an error occurred.
                // See the PostalMethods Status Codes: http://www.postalmethods.com/statuscodes.
                //
                Console.WriteLine("Error is:" + lngResult);
            }
 
            // In debug mode, the following lines prevent your console application from closing automatically upon termination
            Console.WriteLine("Hit ENTER to terminate application");
            Console.ReadLine();
 
        }
    }
 
}

C#: Cancel Delivery Of A Letter with CancelDelivery()

Instructions