Cursor Class

Definition

Namespace:

System.Messaging

Assembly:

System.Messaging.dll

A Cursor is used to maintain a specific location in a MessageQueue when reading the queue's messages.

public ref class Cursor sealed : IDisposable

public sealed class Cursor : IDisposable

type Cursor = class
    interface IDisposable

Public NotInheritable Class Cursor
Implements IDisposable

Inheritance

Object

Cursor

Implements

IDisposable

Remarks

To get a cursor for a MessageQueue, call the CreateCursor method for that queue.

A Cursor is used with such methods as Peek(TimeSpan, Cursor, PeekAction) and Receive(TimeSpan, Cursor) when you need to read messages that are not at the front of the queue. This includes reading messages synchronously or asynchronously. Cursors do not need to be used to read only the first message in a queue.

When reading messages within a transaction, Message Queuing does not roll back cursor movement if the transaction is aborted. For example, suppose there is a queue with two messages, A1 and A2. If you remove message A1 while in a transaction, Message Queuing moves the cursor to message A2. However, if the transaction is aborted for any reason, message A1 is inserted back into the queue but the cursor remains pointing at message A2.

To close the cursor, call Close.

Methods

Close()	Closes the cursor, allowing Message Queuing to release the associated resources.
Dispose()	Releases all resources used by the Cursor.
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)

See also

• CreateCursor()