The AutoDisconnect property determines if the control
should automatically disconnect from a remote host when the control
is unloaded, typically when the application terminates. The default
value for this property is True.
If a dial-up connection was already established at the time the
control was loaded, this property will be reset to False,
preventing it from automatically disconnecting from the host when
it is unloaded. Therefore, to always force the control to
automatically terminate a connection when it is unloaded, you must
explicitly set the property value to True in your application.