Reset the value in the control back to its starting value.
        *Must Override*

def Reset(self):
        """
        Reset the value in the control back to its starting value.
        *Must Override*
        """

        try:
            self._tc.SetValue(self.startValue)
        except TypeError:
            # Start value was None
            pass
        self._tc.SetInsertionPointEnd()
        # Update the Entry Line
        post_command_event(self.main_window, self.TableChangedMsg,
                           updated_cell=self.startValue)