private void OnIncomingCall(ObjectId obj) { User caller = friendsService.GetFriendById(obj); if (caller != null) { VoiceChatViewModel viewModel = this.container.Resolve <VoiceChatViewModel>(); viewModel.Title = "Anruf von " + caller.Name; viewModel.IncomingCall = true; viewModel.CallPartner = caller; viewModel.CanAccept = true; viewModel.CallAccepted = true; OpenCallDialog(viewModel); } }