CriticalHandleZeroOrMinusOneIsInvalid Class
Provides a base class for Win32 critical handle implementations in which the value of either 0 or -1 indicates an invalid handle.
System.Runtime.ConstrainedExecution::CriticalFinalizerObject
System.Runtime.InteropServices::CriticalHandle
Microsoft.Win32.SafeHandles::CriticalHandleZeroOrMinusOneIsInvalid
Assembly: mscorlib (in mscorlib.dll)
The CriticalHandleZeroOrMinusOneIsInvalid type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | CriticalHandleZeroOrMinusOneIsInvalid | Initializes a new instance of the CriticalHandleZeroOrMinusOneIsInvalid class. |
| Name | Description | |
|---|---|---|
![]() | IsClosed | Gets a value indicating whether the handle is closed. (Inherited from CriticalHandle.) |
![]() | IsInvalid | Gets a value that indicates whether the handle is invalid. (Overrides CriticalHandle::IsInvalid.) |
| Name | Description | |
|---|---|---|
![]() | Close | Marks the handle for releasing and freeing resources. (Inherited from CriticalHandle.) |
![]() | Dispose() | Releases all resources used by the CriticalHandle. (Inherited from CriticalHandle.) |
![]() | Dispose(Boolean) | Releases the unmanaged resources used by the CriticalHandle class specifying whether to perform a normal dispose operation. (Inherited from CriticalHandle.) |
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Frees all resources associated with the handle. (Inherited from CriticalHandle.) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | ReleaseHandle | When overridden in a derived class, executes the code required to free the handle. (Inherited from CriticalHandle.) |
![]() | SetHandle | Sets the handle to the specified pre-existing handle. (Inherited from CriticalHandle.) |
![]() | SetHandleAsInvalid | Marks a handle as invalid. (Inherited from CriticalHandle.) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
This class derives from the System.Runtime.InteropServices::CriticalHandle class. It describes the format of an invalid handle. For example, some handles use -1 as an invalid handle value, while others use 0. Further derivations of this class (for example, file or registry handles) can specialize this further.
Use the CriticalHandleZeroOrMinusOneIsInvalid class when you need to wrap an unmanaged resource that does not have an existing managed wrapper.
Note |
|---|
See the CriticalHandle class for important information on critical handle security and thread safety. |
- InheritanceDemand
for full trust for inheritors. This member cannot be inherited by partially trusted code.
- SecurityCriticalAttribute
requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
