The owner document of this DTD.
If the DTD is not owned by a document, this will be null.
Dispose the object.
It releases the managed resource and unregisters it from FinalizationRegistry. This ensures that the release of the managed resource doesn't have to wait until the object is garbage collected.
To avoid resource leaks,
explicitly call the Dispose method or use the using declaration to declare the object.
StaticcreateCreates a new DTD.
Represents a Document Type Definition (DTD) in XML.
If the DTD is not owned by a document, dispose needs to be called to free the DTD.