gtkhtml-sharp 2.6.0.0 Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details. Event data. The event invokes delegates which pass event data via this class. GLib.SignalArgs Constructor Public Constructor. Create a new instance with this constructor if you need to invoke a delegate. Property System.String The text encoding to use for submitting the form. A Property System.String The URL to submit the form data to. A Property System.String The HTTP method to use for submitting. A Usually GET, POST, or PUT.