Monitor.IsEntered(Object) Method

Definition

Namespace:

System.Threading

Assembly:

System.Threading.dll

Source:

Monitor.CoreCLR.cs

Determines whether the current thread holds the lock on the specified object.

public:
 static bool IsEntered(System::Object ^ obj);

public static bool IsEntered (object obj);

static member IsEntered : obj -> bool

Public Shared Function IsEntered (obj As Object) As Boolean

Parameters

obj

Object

The object to test.

Returns

Boolean

true if the current thread holds the lock on obj; otherwise, false.

Exceptions

ArgumentNullException

obj is null.

Remarks

This method works only for locks that are acquired by using the methods of the Monitor class, or by using the C# lock statement or the Visual Basic SyncLock statement, which are implemented with Monitor.

Use this method with diagnostic tools, such as the Assert method and the Contract class, to debug locking issues that involve the Monitor class.