使用GSMComm的短信投递报告

Question

我使用sql从GSMComm数据库向客户端发送短信。我已经阅读了来自Send SMS with Delivery Report的给定答案，但它不起作用。我在发送短信时检查了RequestStatusReport是否为真，并通过comm_MessageReceived()事件得到了状态报告。但是从这个事件中，我只能得到状态报告的索引和存储。我需要此状态报告的来源或来源的编号(RecipientAddress)。但是当我使用代码来获取它时，它返回空值。如果有人能给出解决方案，我将非常感激。我正在使用3g调制解调器发送短信。

/*Message Receive Event*/
    private void comm_MessageReceived(object sender, MessageReceivedEventArgs e)
    {
        try
        {
            IMessageIndicationObject obj = e.IndicationObject;

            if (obj is MemoryLocation) //Get status report for this condition
            {
                MemoryLocation loc = (MemoryLocation)obj;
                Output(string.Format("New message received in storage \"{0}\", index {1}.",
                    loc.Storage, loc.Index));
                Output("");
                SmsStatusReportPdu pdu = new SmsStatusReportPdu();
                ShowMessage(pdu);
                return;
            }

            if (obj is ShortMessage)
            {
                ShortMessage msg = (ShortMessage)obj;
                SmsPdu pdu = comm.DecodeReceivedMessage(msg);
                Output("New message received:");
                ShowMessage(pdu);
                Output("");
                return;
            }
            Output("Error: Unknown notification object!");
        }

        catch (Exception ex)
        {
            ShowException(ex);
        }
    }

private void ShowMessage(SmsPdu pdu)
{
   if (pdu is SmsSubmitPdu)
{
// Stored (sent/unsent) message
SmsSubmitPdu data = (SmsSubmitPdu)pdu;
Output("SENT/UNSENT MESSAGE");
Output("Recipient: " + data.DestinationAddress);
Output("Message text: " + data.UserDataText);
Output("-------------------------------------------------------------------");
return;
}
   if (pdu is SmsDeliverPdu)
{
// Received message
SmsDeliverPdu data = (SmsDeliverPdu)pdu;
Output("RECEIVED MESSAGE");
Output("Sender: " + data.OriginatingAddress);
Output("Sent: " + data.SCTimestamp.ToString());
Output("Message text: " + data.UserDataText);
Output("-------------------------------------------------------------------");
return;
}
    if (pdu is SmsStatusReportPdu)
{
// Status report
SmsStatusReportPdu data = (SmsStatusReportPdu)pdu;
Output("STATUS REPORT");
Output("Recipient: " + data.RecipientAddress); //Null value
Output("Status: " + data.Status.ToString());
Output("Timestamp: " + data.DischargeTime.ToString());
Output("Message ref: " + data.MessageReference.ToString());
Output("-------------------------------------------------------------------");
return;
}
Output("Unknown message type: " + pdu.GetType().ToString());
 }

Answer 1

难怪在第一种情况下会得到空值--您创建了一个空对象，而不是读取消息: SmsStatusReportPdu pdu = RecipientAddress SmsStatusReportPdu()

这应该适用于存储在SIM存储器中的交付报告：

DecodedShortMessage msg = _comm.ReadMessage(ind.Index, ind.Storage);
SmsStatusReportPdu spdu = pdu as PDU.SmsStatusReportPdu;
if (spdu != null)
{
    //do something with the status report
    Console.WriteLine(spdu.RecipientAddress);
}