Optional. The BasePriority property specifies a single base priority for all messages sent to a public queue.
| Type: | Long |
| Run time: | read/write |
object.BasePriority
| Syntax Element | Description |
| object | Queue information (MSMQQueueInfo) object that defines the queue. |
Integer value between -32768 and +32767 (default is 0).
A public queue's base priority is used for routing the queue's messages over the network. It can be used to give the messages sent to the queue a higher (or lower) priority than messages sent to other queues. When a queue's base priority is set, all the messages sent to it are given a higher priority than messages sent to queues with a lower base priority. The queue's base priority has no effect on the order of the messages in the queue, or how messages are read from the queue.
BasePriority only applies to public queues that can be located through MQIS (using a public format name). The base priority of private queues, as well as public queues accessed directly, is always 0.
MSMQ combines the queue's base priority with the message's priority (Priority) to determine the overall priority of a message when it is sent to the queue.
To set the base priority of a public queue, set BasePriority and call the MSMQQueueInfo object's Create method.
To reset the base priority of a public queue after the queue is created, set BasePriority to a new level and, if the queue is open, call the MSMQQueueInfo object's Update method. If the queue is not open do not call Update, the queue's properties are updated automatically when the queue is opened.
The base priority of a queue can be reset after the queue is created. To change the base priority of a queue that is open, set BasePriority to a new level and call the MSMQQueueInfo object's Update method. To change the base priority of a closed queue, set Basepriority to the new level. If the queue is not open there is no need to call Update, the queue's properties are updated automatically when the queue is opened.
To find the base priority of a queue, call the MSMQQueueInfo object's Refresh method.
This example creates a public queue on the local machine, setting the queue's base priority to 7.
To try this example using Microsoft® Visual Basic® (version 5.0), make sure the Microsoft Message Queue Object Library is referenced, then paste the following code into the code window of a form, run the example, then click on the form.
Dim qinfo As MSMQQueueInfo
Private Sub Form_Click()
Set qinfo = New MSMQQueueInfo
qinfo.PathName = ".\basepriorityTest"
qinfo.Label = "Test Queue"
qinfo.BasePriority = 7
qinfo.Create
MsgBox "Queue's Format name is: " + qinfo.FormatName
End Sub
Create, FormatName, Label, MSMQQueueInfo PathName, Priority, Refresh, Update