GCHandleType Enumeration

Represents the types of handles the GCHandle class can allocate.

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

public enum GCHandleType
/** @attribute SerializableAttribute() */ 
/** @attribute ComVisibleAttribute(true) */ 
public enum GCHandleType
public enum GCHandleType

 Member nameDescription
Supported by the .NET Compact FrameworkNormalThis 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. 
Supported by the .NET Compact FrameworkPinnedThis 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. 
Supported by the .NET Compact FrameworkWeakThis 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. 
Supported by the .NET Compact FrameworkWeakTrackResurrectionThis handle type is similar to Weak, but the handle is not zeroed if the object is resurrected during finalization. 

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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