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SafeHandle Class

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]

Represents a wrapper class for operating system handles. This class must be inherited.

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

'Declaration
<SecurityCriticalAttribute> _
Public MustInherit Class SafeHandle _
	Inherits CriticalFinalizerObject _
	Implements IDisposable

The SafeHandle type exposes the following members.

  NameDescription
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360SafeHandleInitializes a new instance of the SafeHandle class using system defaults.
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360SafeHandle(IntPtr, Boolean)Initializes a new instance of the SafeHandle class with the specified invalid handle value.
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  NameDescription
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360IsClosedGets a value indicating whether the handle is closed.
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360IsInvalidWhen overridden in a derived class, gets a value indicating whether the handle value is invalid.
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  NameDescription
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360CloseSecurity Critical. Marks the handle for releasing and freeing resources.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360DangerousAddRefSecurity Critical. Manually increments the reference counter on SafeHandle instances.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360DangerousGetHandleReturns the value of the handle field.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360DangerousReleaseSecurity Critical. Manually decrements the reference counter on a SafeHandle instance.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360DisposeReleases all resources used by the SafeHandle class.
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360Dispose(Boolean)Security Critical. Releases the unmanaged resources used by the SafeHandle class specifying whether to perform a normal dispose operation.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360Equals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360FinalizeFrees all resources associated with the handle. (Overrides CriticalFinalizerObject.Finalize.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360MemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360ReleaseHandleWhen overridden in a derived class, executes the code required to free the handle.
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360SetHandleSets the handle to the specified pre-existing handle.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360SetHandleAsInvalidSecurity Critical. Marks a handle as no longer used.
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360ToStringReturns a string that represents the current object. (Inherited from Object.)
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  NameDescription
Protected fieldSupported by Silverlight for Windows PhoneSupported by Xbox 360handleSpecifies the handle to be wrapped.
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Silverlight

Supported in: 5, 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

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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