ReaderWriterLockSlim.RecursionPolicy Property

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Gets a value that indicates the recursion policy for the current ReaderWriterLockSlim object.

Namespace: System.Threading
Assembly: System.Core (in System.Core.dll)


Public ReadOnly Property RecursionPolicy As LockRecursionPolicy
public LockRecursionPolicy RecursionPolicy { get; }

Property Value

Type: System.Threading..::.LockRecursionPolicy
One of the enumeration values that specifies the lock recursion policy.


Recursion policy determines the restrictions on threads that enter the lock more than once. For example, if a lock was created with LockRecursionPolicy..::.NoRecursion and a thread has entered the lock in read mode, LockRecursionException is thrown if the thread tries to reenter the lock in read mode.


A thread in upgradeable mode can upgrade to write mode or downgrade to read mode regardless of the lock recursion policy setting.

Regardless of recursion policy, a thread that initially entered read mode is not allowed to upgrade to upgradeable mode or write mode, because that pattern creates a strong probability of deadlocks.

For more information about recursion policy and its effects, see the LockRecursionPolicy enumeration and the ReaderWriterLockSlim class.

Version Information

Windows Phone OS

Supported in: 8.1, 8.0

See Also


ReaderWriterLockSlim Class

System.Threading Namespace