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SafeHandle Constructor (IntPtr, Boolean)

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

Namespace:  System.Runtime.InteropServices
Assemblies:   System.Runtime.Handles (in System.Runtime.Handles.dll)
  mscorlib (in mscorlib.dll)

protected SafeHandle(
	IntPtr invalidHandleValue,
	bool ownsHandle
)

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: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

  • 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.

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