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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.

Inheritance Hierarchy

System.Object
System.WeakReference<T>

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

Syntax

C++

[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.

Constructors

	Name	Description
	WeakReference<T>(T)	Initializes a new instance of the WeakReference<T> class that references the specified object.
	WeakReference<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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Methods

	Name	Description
	Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetObjectData	Populates a SerializationInfo object with all the data necessary to serialize the current WeakReference<T> object.
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	SetTarget	Sets the target object that is referenced by this WeakReference<T> object.
	ToString	Returns a string that represents the current object. (Inherited from Object.)
	TryGetTarget	Tries to retrieve the target object that is referenced by the current WeakReference<T> object.

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Remarks

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.

Version Information

.NET Framework

Supported in: 4.5

.NET for Windows Store apps

Supported in: Windows 8

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.

Thread Safety

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

Reference

System Namespace

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