CriticalHandle 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.

Represents a wrapper class for handle resources.

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

public abstract class CriticalHandle : CriticalFinalizerObject, 

The CriticalHandle type exposes the following members.

Protected methodCriticalHandleInitializes a new instance of the CriticalHandle class with the specified invalid handle value.

Public propertyIsClosedGets a value that indicates whether the handle is closed.
Public propertyIsInvalidWhen overridden in a derived class, gets a value that indicates whether the handle value is invalid.

Public methodCloseSecurity Critical. Marks the handle for releasing and freeing resources.
Public methodDispose()Releases all resources used by the CriticalHandle.
Protected methodDispose(Boolean)Security Critical. Releases the unmanaged resources used by the CriticalHandle class specifying whether to perform a normal dispose operation.
Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeFrees all resources associated with the handle. (Overrides CriticalFinalizerObject.Finalize().)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Protected methodReleaseHandleWhen overridden in a derived class, executes the code required to free the handle.
Protected methodSetHandleSets the handle to the specified pre-existing handle.
Public methodSetHandleAsInvalidMarks a handle as invalid.
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

Protected fieldhandleSpecifies the handle to be wrapped.


Supported in: 5, 4, 3

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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