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WeakEventManager.ReadLock Property

.NET Framework 4.5

Establishes a read-lock on the underlying data table, and returns an IDisposable.

Namespace: System.Windows
Assembly: WindowsBase (in WindowsBase.dll)

protected IDisposable ReadLock { get; }

Property Value

Type: System.IDisposable
An object that can be used to establish a lock on the data table members and then be appropriately disposed with a using construct.

Remarks

In derived classes, queries to the table contained in Item should always occur within a using (ReadLock) { ... } clause, except for queries that are already within a write lock. These queries may be necessary if your class supports a more sophisticated AddListener implementation that requires more data beyond the source and the listener, and uses the Item collection to store the extra information.

Version Information

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

WeakEventManager Class

System.Windows Namespace

IWeakEventListener

WeakEventManager.ListenerList

WriteLock

Other Resources

Data Binding Overview

Weak Event Patterns

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