AVCamBarcode.CameraViewController.PrepareForSegue C# (CSharp) Метод

		public override void PrepareForSegue (UIStoryboardSegue segue, NSObject sender)
		{
			if (segue.Identifier == "SelectMetadataObjectTypes") {
				Func<AVMetadataObjectType, string> key = v => v.ToString ();
				barcodeTypeMap = metadataOutput.AvailableMetadataObjectTypes
											   .GetFlags ()
											   .ToDictionary (key);
				var allItems = barcodeTypeMap.Keys.ToArray ();
				var selectedItems = metadataOutput.MetadataObjectTypes
												  .GetFlags ()
												  .Select (key)
												  .ToList ();

				var navigationController = (UINavigationController)segue.DestinationViewController;
				var selectionCtrl = (ItemSelectionViewController)navigationController.ViewControllers [0];

				selectionCtrl.Title = "Metadata Object Types";
				selectionCtrl.Delegate = this;
				selectionCtrl.Identifier = metadataObjectTypeItemSelectionIdentifier;
				selectionCtrl.AllItems = allItems;
				selectionCtrl.SelectedItems = selectedItems;
				selectionCtrl.AllowsMultipleSelection = true;
			} else if (segue.Identifier == "SelectSessionPreset") {
				Func<NSString, string> key = v => v;
				presetMap = AvailableSessionPresets ().ToDictionary (key);
				var allItems = presetMap.Keys.ToArray ();

				var navigationController = (UINavigationController)segue.DestinationViewController;
				var selectionCtrl = (ItemSelectionViewController)navigationController.ViewControllers [0];

				selectionCtrl.Title = "Session Presets";
				selectionCtrl.Delegate = this;
				selectionCtrl.Identifier = sessionPresetItemSelectionIdentifier;
				selectionCtrl.AllItems = allItems;
				selectionCtrl.SelectedItems = new List<string> { key (session.SessionPreset) };
				selectionCtrl.AllowsMultipleSelection = false;
			}
		}