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GCHandleType Enumeration

Represents the types of handles the GCHandle class can allocate.

[Visual Basic]
<Serializable>
Public Enum GCHandleType
[C#]
[Serializable]
public enum GCHandleType
[C++]
[Serializable]
__value public enum GCHandleType
[JScript]
public
   Serializable
enum GCHandleType

Members

Member name Description
Normal

Supported by the .NET Compact Framework.

This handle type represents an opaque handle, meaning you cannot resolve the address of the pinned object through the handle. You can use this type to track an object and prevent its collection by the garbage collector. This enumeration member is useful when an unmanaged client holds the only reference, which is undetectable from the garbage collector, to a managed object.
Pinned

Supported by the .NET Compact Framework.

This handle type is similar to Normal, but allows the address of the pinned object to be taken. This prevents the garbage collector from moving the object and hence undermines the efficiency of the garbage collector. Use the Free method to free the allocated handle as soon as possible.
Weak

Supported by the .NET Compact Framework.

This handle type is used to track an object, but allow it to be collected. When an object is collected, the contents of the GCHandle are zeroed. Weak references are zeroed before the finalizer runs, so even if the finalizer resurrects the object, the Weak reference is still zeroed.
WeakTrackResurrection

Supported by the .NET Compact Framework.

This handle type is similar to Weak, but the handle is not zeroed if the object is resurrected during finalization.

Requirements

Namespace: System.Runtime.InteropServices

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework

Assembly: Mscorlib (in Mscorlib.dll)

See Also

System.Runtime.InteropServices Namespace | GCHandle

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