ReaderWriterLockSlim.IsWriteLockHeld Property

Reference

Definition

Namespace:: System.Threading

Assemblies:: System.Core.dll, System.Threading.dll

Assemblies:: netstandard.dll, System.Threading.dll

Assembly:: System.Threading.dll

Assembly:: System.Core.dll

Assembly:: netstandard.dll

Source:: ReaderWriterLockSlim.cs

Source:: ReaderWriterLockSlim.cs

Source:: ReaderWriterLockSlim.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets a value that indicates whether the current thread has entered the lock in write mode.

public:
 property bool IsWriteLockHeld { bool get(); };

public bool IsWriteLockHeld { get; }

member this.IsWriteLockHeld : bool

Public ReadOnly Property IsWriteLockHeld As Boolean

Property Value

Boolean

true if the current thread has entered write mode; otherwise, false.

Examples

The following example shows how to use the IsWriteLockHeld property to generate an assert if the current thread has entered write mode unexpectedly.

using (ReaderWriterLockSlim rwLock = new ReaderWriterLockSlim()) {

Using rwLock As New ReaderWriterLockSlim()

Debug.Assert(!rwLock.IsWriteLockHeld, 
    String.Format("Thread {0} is still holding the write lock after MyFunction has finished.", 
                  Thread.CurrentThread.ManagedThreadId));

Debug.Assert(Not rwLock.IsWriteLockHeld, _
    String.Format("Thread {0} is still holding the write lock after MyFunction has finished.", _
                  Thread.CurrentThread.ManagedThreadId))

Remarks

This property is intended for use in asserts or for other debugging purposes. Do not use it to control the flow of program execution.

Applies to

Product	Versions
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1
UWP	10.0

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