MessageQueue.GetMachineId(String) Method

public:
 static Guid GetMachineId(System::String ^ machineName);

public static Guid GetMachineId (string machineName);

static member GetMachineId : string -> Guid

Public Shared Function GetMachineId (machineName As String) As Guid

Parameters

Returns

A Guid that represents a unique identifier for the computer on which the queue is located.

Exceptions

Examples

The following code example calls GetMachineId(String).

// Get the name of the computer that contains the queue.
string machineName = queue.MachineName;

// Display the return value of the MessageQueue.GetMachineId method.
Console.WriteLine("MessageQueue.GetMachineId(): {0}",
    MessageQueue.GetMachineId(machineName));

Remarks

You can use a computer's identifier for two purposes, among others: to read the computer journal and to set security certificates. However, you cannot call GetMachineId(String) for a remote computer when you are working offline because the application must have access to the directory service on the domain controller.

The computer identifier (or machine identifier) is a Guid that Message Queuing creates when a computer is added to the enterprise. Message Queuing combines the computer identifier with the Machine and Journal keywords to create the machine journal's format name, which has the syntax Machine=<computeridentifier>;Journal. The machine journal, which is also known as the journal queue, is a system queue that stores copies of application-generated messages when the UseJournalQueue property is true.

This syntax for the journal is only valid when constructing the format name for the queue. The path name syntax is MachineName\Journal$.

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

Applies to

See also

• MachineName
• UseJournalQueue