ReaderWriterLockSlim::ExitReadLock Method ()
Reduces the recursion count for read mode, and exits read mode if the resulting count is 0 (zero).
Assembly: System.Core (in System.Core.dll)
| Exception | Condition |
|---|---|
| SynchronizationLockException | The current thread has not entered the lock in read mode. |
This method is not sensitive to recursion order. For example, if a thread enters a lock in upgradeable mode and then enters the lock in read mode, the order in which the thread exits the two modes does not matter. If a lock allows recursion, a thread can enter the lock in write mode and then enter it recursively in read mode; the order in which the thread exits read mode and write mode does not matter.
Exiting the lock might signal other waiting threads.
The following example shows how to use a finally block to execute the ExitReadLock method, ensuring that the caller exits read mode. The method shown in the example retrieves the value associated with a key. If the key is not found, the exception thrown by the inner Dictionary<TKey, TValue> is allowed to terminate the method. The EnterReadLock method is used to enter read mode.
This code is part of a larger example provided for the ReaderWriterLockSlim class.
Available since 8
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1