Delete all stored objects in the container.
A value of True is returned if all objects were deleted from the
current container. Otherwise, a value of False is returned and the
LastError property will return the specific cause
of the failure.
The storage container contains information for each of the objects
that have been stored by the application. Each of these objects are associated
with the application ID and the storage type that was specified when
calling the Open method. The DeleteAll
method instructs the server to remove all objects in the continer, resetting
it back to its initial state.
Exercise caution when using this method. The operation
is immediate and the objects that are stored in the container are
permanently deleted. They cannot be recovered by your application.