EventWaitHandleAcl.TryOpenExisting Method
Definition
Important
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Tries to open a specified named event wait handle, if it already exists, applies the desired access rights, and returns a value that indicates whether the operation succeeded.
public:
static bool TryOpenExisting(System::String ^ name, System::Security::AccessControl::EventWaitHandleRights rights, [Runtime::InteropServices::Out] System::Threading::EventWaitHandle ^ % result);public static bool TryOpenExisting (string name, System.Security.AccessControl.EventWaitHandleRights rights, out System.Threading.EventWaitHandle? result);static member TryOpenExisting : string * System.Security.AccessControl.EventWaitHandleRights * EventWaitHandle -> boolPublic Shared Function TryOpenExisting (name As String, rights As EventWaitHandleRights, ByRef result As EventWaitHandle) As BooleanParameters
- name
- String
The name of the event wait handle to be opened. If it's prefixed by "Global", it refers to a machine-wide event wait handle. If it's prefixed by "Local", or doesn't have a prefix, it refers to a session-wide event wait handle. Both prefix and name are case-sensitive.
- rights
- EventWaitHandleRights
The desired access rights to apply to the returned event wait handle.
- result
- EventWaitHandle
When this method returns true, contains an object that represents the named event wait handle if the call succeeded, or null otherwise. This parameter is treated as uninitialized.
Returns
true if the named event wait handle was opened successfully; otherwise, false.
Exceptions
name is null
name is an empty string.
A Win32 error occurred.
The named event wait handle exists, but the user does not have the security access required to use it.
