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CriticalHandleZeroOrMinusOneIsInvalid.IsInvalid Property

Gets a value that indicates whether the handle is invalid.

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

public override bool IsInvalid { get; }

Property Value

Type: System.Boolean
true if the handle is not valid; otherwise, false.

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

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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