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SafeHandle.IsClosed Property

Gets a value indicating whether the handle is closed.

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

Property Value

Type: System.Boolean
true if the handle is closed; otherwise, false.

The IsClosed method returns a value indicating whether the SafeHandle object's handle is no longer associated with a native resource. This differs from the definition of the IsInvalid property, which computes whether a given handle is always considered invalid. The IsClosed method returns a true value in the following cases:

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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