Return the current state of the control.
This property has been deprecated and may not be included in future versions of the control.
The State read-only property returns the state of the
control. This property should be checked on blocking controls to
determine if the control is in use before taking some action. The
possible values returned by this property are:
||No connection has been established
||The client is current idle and not sending or receiving
||The client is establishing a connection with the
||The client is reading data from the server
||The client is writing data to the server
||The client is disconnecting from the server