public ExportKeyViewModel(IDiscogsAuthentificationProvider iIWebServicesSettings, IInfraDependencies idp) : base(iIWebServicesSettings, idp) { _FileTools = idp.File; this.Directory = _FileTools.DocumentFolder; Commit = this.Register(RelayCommand.InstanciateAsync(() => DoCommit(), () => _FileTools.DirectoryExists(Directory))); }