Esempio n. 1
0
		private Message[] PeekMessages(MessageQueue activeQueue, bool blnDynamicConnection, MessageFormat eMessageFormat, System.Type CustomType)
		{
			Message objMessage;
			Message[] arrCurrentMessages = new Message[0];
			Message[] arrCopyOfMessages = null;
			IMessageFormatter objFormatter = null ;
			MessagePropertyFilter objMessagePropertyFilter = new MessagePropertyFilter();
			int intArrayIndex;

			// Message Formatter
			switch (eMessageFormat)
			{
				case MessageFormat.XMLSerialize:
					if (CustomType == null)
					{
						objFormatter = new XmlMessageFormatter();
					}
					else
					{
					// objFormatter = new XmlMessageFormatter(new Type() [CustomType]);
					}

					break;
				case MessageFormat.ActiveXSerialize:
					objFormatter = new ActiveXMessageFormatter();
					break;
				case MessageFormat.BinarySerialize:
					objFormatter = new BinaryMessageFormatter();
					break;
			}

			// Messages in Private Queue
			// Ensure these properties are received (CorrelationID defaults to False)
			objMessagePropertyFilter.SetDefaults();
			objMessagePropertyFilter.CorrelationId = true;
			objMessagePropertyFilter.AppSpecific = true;
			objMessagePropertyFilter.ArrivedTime = true;
			activeQueue.MessageReadPropertyFilter = objMessagePropertyFilter;

			// Message Formatter
			activeQueue.Formatter = objFormatter;

			// Dynamic Connection whilst gathering messages
			if (blnDynamicConnection == true)
			{
				IEnumerator objMessageEnumerator = activeQueue.GetEnumerator();
				intArrayIndex = 0;
				while (objMessageEnumerator.MoveNext())
				{
					objMessage = (Message) objMessageEnumerator.Current;
					if (intArrayIndex > 0)
					{
						arrCopyOfMessages = new Message[intArrayIndex];
						arrCurrentMessages.CopyTo(arrCopyOfMessages,0);
						arrCurrentMessages=arrCopyOfMessages;
					}
					arrCurrentMessages[intArrayIndex] = objMessage;
					intArrayIndex += 1;
				}
			}
			else // Snapshot of messages currently in Queue
			{
				arrCurrentMessages = null ;
				try
				{
					arrCurrentMessages = activeQueue.GetAllMessages();
				}
				catch (System.Messaging.MessageQueueException excM)
				{
					throw excM;
				}
			}

			return arrCurrentMessages;

		}