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WeakReference<T> Class

.NET Framework 4.5

Represents a typed weak reference, which references an object while still allowing that object to be reclaimed by garbage collection.

System.Object
  System.WeakReference<T>

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

[SerializableAttribute]
public sealed class WeakReference<T> : ISerializable 
where T : class

Type Parameters

T

The type of the object referenced.

The WeakReference<T> type exposes the following members.

  NameDescription
Public methodSupported in .NET for Windows Store appsWeakReference<T>(T)Initializes a new instance of the WeakReference<T> class that references the specified object.
Public methodSupported in .NET for Windows Store appsWeakReference<T>(T, Boolean)Initializes a new instance of the WeakReference<T> class that references the specified object and uses the specified resurrection tracking.
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  NameDescription
Public methodSupported in .NET for Windows Store appsEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Public methodSupported in .NET for Windows Store appsGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetObjectDataPopulates a SerializationInfo object with all the data necessary to serialize the current WeakReference<T> object.
Public methodSupported in .NET for Windows Store appsGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodSupported in .NET for Windows Store appsSetTargetSets the target object that is referenced by this WeakReference<T> object.
Public methodSupported in .NET for Windows Store appsToStringReturns a string that represents the current object. (Inherited from Object.)
Public methodSupported in .NET for Windows Store appsTryGetTargetTries to retrieve the target object that is referenced by the current WeakReference<T> object.
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A weak reference enables the garbage collector to collect an object while still allowing an application to access the object. If you need the object, you can obtain a strong reference to it and prevent it from being collected.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, 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.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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