Ozeki NG SMS Gateway

C# SMS API - onMessageDeliveryFailed

This event is invoked by the SMS Gateway if the SMS is not accepted by the network for delivery or the network returns a delivery report with negative statuscode meaning that the message could not be delivered.

To handle this event, the following delegate type is used:

public delegate void FailureEventHandler(string messageID, int errorCode, string errorMessage, DateTime errorTime);

And the following event is used:

public event FailureEventHandler onMessageDeliveryFailed;

     Name Description
void onMessageDeliveryFailed( string messageID, int errorCode, string errorMessage, DateTime errorTime );

Create a function with this header and attach it to the onMessageDeliveryFailed event to receive notifications about message delivery failures.


messageID - The message id that was returned by the SMS Gateway when you have posted the message for sending using the sendMessage method.

errorCode - An integer number describing the reason for delivery failure

errorMessage - The text describing the reason for delivery failure

errorTime - The timestamp that marks the occurence of the event


Step 1. - Create the event handling function:

   void myDeliveryFauilureHandler(string messageID,int 
   errorCode, string errorMessage, DateTime errorTime)
     console.writeln("The message delivery has failed because "+errorMessage);
Step 2. - Attach this event to the SMSClient object:

   mySMSClient.onMessageDeliveryFailed += 
Hint: Notice the ServerEventSink.wrap method, that is used to attach the event. This wrapper is used to work around an error that can happen when asynchronous callbacks are invoked in .NET remoting.

More information