public MainPage() { InitializeComponent(); //set the navigation NavigationPage.SetHasNavigationBar(this, true); //add the settings event handler tbrItem.Clicked += OnSettingsClicked; string fullpath = System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "tags.json"); //DisplayAlert("Path", fullpath, "OK"); PictureThis.Model.jsonToolbox jsonTB = new Model.jsonToolbox(); jsonTB.initFiles(); }