public void SendMessage() { var contact = this.CurrentContact; SendMessageViewModel viewModel = new SendMessageViewModel(); viewModel.Title = "Send message to " + contact.Name; this.sendMessageRequest.Raise( viewModel, sendMessage => { if (sendMessage.Confirmed) { this.SendingMessage = true; this.chatService.SendMessage( contact, sendMessage.Message, result => { this.SendingMessage = false; }); } }); }