MessageQueue.CanWrite Property


Gets a value that indicates whether the MessageQueue can be written to.

Namespace:   System.Messaging
Assembly:  System.Messaging (in System.Messaging.dll)

public bool CanWrite { get; }

Property Value

Type: System.Boolean

true if the MessageQueue exists and the application can write to it; otherwise, false.

CanWrite indicates whether the application is able to send messages to the queue. If CanWrite is true, the MessageQueue can send messages to the queue. Otherwise, it cannot.

CanWrite is false if a queue is already open with exclusive write access (or if it's open with non-exclusive access and this MessageQueue requests exclusive access), or if the application does not have sufficient rights to access it. If your application tries to write to a queue when CanWrite is false, access is denied.

The following table shows whether this property is available in various Workgroup modes.

Workgroup mode


Local computer


Local computer and direct format name


Remote computer


Remote computer and direct format name


The following code example displays the value of a message queue's CanWrite property.

// Display the value of the queue's CanWrite property.
Console.WriteLine("MessageQueue.CanWrite: {0}", queue.CanWrite);

.NET Framework
Available since 1.1
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