SafeHandleZeroOrMinusOneIsInvalid.IsInvalid Property
Microsoft Silverlight will reach end of support after October 2021. Learn more.
This type can be used only by trusted applications. If you try to use its members in a partial-trust application, your code will throw a MethodAccessException exception. This type is security-critical, which restricts its use.
[SECURITY CRITICAL]
Gets a value that indicates whether the handle is invalid.
Namespace: Microsoft.Win32.SafeHandles
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Overrides ReadOnly Property IsInvalid As Boolean
public override bool IsInvalid { get; }
Property Value
Type: System.Boolean
true if the handle is not valid; otherwise, false.
Version Information
Silverlight
Supported in: 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
XNA Framework
Supported in: Xbox 360, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.