WeakReference Constructors
Definition
Important
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Initializes a new instance of the WeakReference class.
Overloads
| WeakReference(Object) |
Initializes a new instance of the WeakReference class, referencing the specified object. |
| WeakReference(Object, Boolean) |
Initializes a new instance of the WeakReference class, referencing the specified object and using the specified resurrection tracking. |
| WeakReference(SerializationInfo, StreamingContext) |
Obsolete.
Initializes a new instance of the WeakReference class, using deserialized data from the specified serialization and stream objects. |
- Source:
- WeakReference.cs
- Source:
- WeakReference.cs
- Source:
- WeakReference.cs
Initializes a new instance of the WeakReference class, referencing the specified object.
public:
WeakReference(System::Object ^ target);public WeakReference(object target);public WeakReference(object? target);new WeakReference : obj -> WeakReferencePublic Sub New (target As Object)Parameters
- target
- Object
The object to track or null.
Remarks
This constructor creates a short weak reference to target.
See also
Applies to
.NET 10 e outras versões
| Produto | Versões |
|---|---|
| .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 | 1.1, 2.0, 3.0, 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, 1.5, 1.6, 2.0, 2.1 |
| UWP | 10.0 |
- Source:
- WeakReference.cs
- Source:
- WeakReference.cs
- Source:
- WeakReference.cs
Initializes a new instance of the WeakReference class, referencing the specified object and using the specified resurrection tracking.
public:
WeakReference(System::Object ^ target, bool trackResurrection);public WeakReference(object target, bool trackResurrection);public WeakReference(object? target, bool trackResurrection);new WeakReference : obj * bool -> WeakReferencePublic Sub New (target As Object, trackResurrection As Boolean)Parameters
- target
- Object
An object to track.
- trackResurrection
- Boolean
Indicates when to stop tracking the object. If true, the object is tracked after finalization; if false, the object is only tracked until finalization.
Examples
The following example creates a cache of data objects with short weak references. This example is part of a larger example provided for the WeakReference class.
// Add objects with a short weak reference to the cache.
for (int i = 0; i < count; i++) {
_cache.Add(i, new WeakReference(new Data(i), false));
}
// Add objects with a short weak reference to the cache.
for i = 0 to count - 1 do
_cache.Add(i, WeakReference(Data i, false))
' Add data objects with a short weak reference to the cache.
For ctr = 0 To count - 1
_cache.Add(ctr, New WeakReference(New Data(ctr)))
Next
Remarks
If trackResurrection is false, a short weak reference is created. If trackResurrection is true, a long weak reference is created.
See also
Applies to
.NET 10 e outras versões
| Produto | Versões |
|---|---|
| .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 | 1.1, 2.0, 3.0, 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, 1.5, 1.6, 2.0, 2.1 |
| UWP | 10.0 |
- Source:
- WeakReference.cs
- Source:
- WeakReference.cs
- Source:
- WeakReference.cs
Caution
This API supports obsolete formatter-based serialization. It should not be called or extended by application code.
Initializes a new instance of the WeakReference class, using deserialized data from the specified serialization and stream objects.
protected:
WeakReference(System::Runtime::Serialization::SerializationInfo ^ info, System::Runtime::Serialization::StreamingContext context);[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
protected WeakReference(System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context);protected WeakReference(System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context);[<System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
new WeakReference : System.Runtime.Serialization.SerializationInfo * System.Runtime.Serialization.StreamingContext -> WeakReferencenew WeakReference : System.Runtime.Serialization.SerializationInfo * System.Runtime.Serialization.StreamingContext -> WeakReferenceProtected Sub New (info As SerializationInfo, context As StreamingContext)Parameters
- info
- SerializationInfo
An object that holds all the data needed to serialize or deserialize the current WeakReference object.
- context
- StreamingContext
(Reserved) Describes the source and destination of the serialized stream specified by info.
- Attributes
Exceptions
info is null.
Remarks
The context parameter is reserved, and does not currently participate in this operation.
Applies to
.NET 10 e outras versões
| Produto | Versões (Obsoleto) |
|---|---|
| .NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7 (8, 9, 10) |
| .NET Framework | 1.1, 2.0, 3.0, 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 | 2.0, 2.1 |
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