Encapsulates the state of the MessagesReceived event and contains a collection of the messages sent to a room.
Assembly: Microsoft.Lync.Model (in Microsoft.Lync.Model.dll)
When room message filtering is enabled, the IsSendingMessge event is raised when the local user is sending a message to the room. This class instance gives you access to the message that will be sent to the room or canceled after you take the appropriate action on the message. For information about taking action on a message, see Room.SendFilteredMessage(Microsoft.Lync.Model.Room.RoomMessage,Microsoft.Lync.Model.Room.Room.MessageFilteringAction).