SafeHandleZeroOrMinusOneIsInvalid.IsInvalid Property

Note: This property is new in the .NET Framework version 2.0.

Gets a value indicating whether the handle is invalid.

Namespace: Microsoft.Win32.SafeHandles
Assembly: mscorlib (in mscorlib.dll)

public:
virtual property bool IsInvalid {
	bool get () override;
}
/** @property */
public boolean get_IsInvalid ()

public override function get IsInvalid () : boolean

Property Value

true if the handle is not valid; otherwise, false.

The common language runtime uses this property to determine whether critical finalization is required.

The following code example demonstrates how to create a class that derives from the SafeHandleZeroOrMinusOneIsInvalid class. This example creates a class that wraps a pointer to unmanaged memory.

No code example is currently available or this language may not be supported.

  • SecurityPermission  for permission to call unmanaged code. Security action: LinkDemand. Associated enumeration: UnmanagedCode.
  • SecurityPermission  for permission to call unmanaged code. Security action: InheritanceDemand. Associated enumeration: UnmanagedCode.

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

.NET Compact Framework

Supported in: 2.0

Community Additions

ADD
Show: