Reduces the recursion count for read mode, and exits read mode if the resulting count is 0 (zero).
Assemblies: System.Threading (in System.Threading.dll)
System.Core (in System.Core.dll)
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 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.