This method locks a session item and returns it from the database.

Declaration

// C#
public override SessionStateStoreData GetItemExclusive(HttpContext context, 
   string id, out bool locked, out TimeSpan lockAge, out Object lockId, 
   out SessionStateActions actions);

Parameters

• context

  The HttpContext object for the current request.

• id

  The session ID for the current request.

• locked

  A Boolean value that is true if the session item was successfully locked in the database; otherwise, it is false.

• lockAge

  A TimeSpan object that indicates the amount of time the session item has been locked in the database.

• lockId

  A lock identifier object.

• actions

  A SessionStateActions enumeration value that indicates whether the session is uninitialized and cookieless.

Return Value

A SessionStateStoreData object that contains session information from the database.

Exceptions

ArgumentNullException - The input parameter is null.

OracleException - An Oracle-related error has occurred.

System.Configuration.Provider.ProviderException - The session state information is invalid and might be corrupted.

Remarks

This method returns a SessionStateStoreData object from the database and updates the expiration date of the session item. This method is called only if the attribute in the page is set to the default value of true. The session item is retrieved only if no other requests are currently using it. The session item in the database is locked for the duration of the request.

If no session data is found, the locked out parameter is set to false and a null reference is returned. The session state service then calls the CreateNewStoreData method to create a newsession item in the database.

If the session data is locked in the database, then the locked parameter is set to true, the lockAge parameter is set to the amount of time the session item has been locked in the database, the lockId parameter is set to the lock identifier and a null reference is returned. The session state service then keeps calling this method at half-second intervals. If the lockAge value exceeds the ExecutionTimeout value, then the session state service calls the ReleaseItemExclusive method to release the lock. It then calls the GetItemExclusive method again.