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SafeHandle Constructor

Initializes a new instance of the SafeHandle class with the specified invalid handle value.

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

'Declaration
Protected Sub New ( _
	invalidHandleValue As IntPtr, _
	ownsHandle As Boolean _
)

Parameters

invalidHandleValue
Type: System.IntPtr
The value of an invalid handle (usually 0 or -1). Your implementation of IsInvalid should return true for this value.
ownsHandle
Type: System.Boolean
true to reliably let SafeHandle release the handle during the finalization phase; otherwise, false (not recommended).

ExceptionCondition
TypeLoadException

The derived class resides in an assembly without unmanaged code access permission.

If the ownsHandle parameter is false, ReleaseHandle is never called; thus, it is not recommended to use this parameter value as your code may leak resources.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

  • InheritanceDemand 

    for full trust for inheritors. This member cannot be inherited by partially trusted code.

  • SecurityCriticalAttribute 

    requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.

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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