public void Execute(object parameter)
        {
            _canExecute = false;
            var fs = new FileServiceClient();
            var flvm = (FolderListVM)parameter;
            fs.GetFoldersCompleted += (sender, args) =>
            {
                if (parameter is FolderListVM)
                {

                    if (flvm.Folders == null)
                        flvm.Folders = new ObservableCollection<FolderData>();
                    flvm.Folders.Clear();
                    foreach (var l in args.Result)
                    {
                        //var dt = new DataTemplate();
                        //dt.DataType = string;
                        string subOnly = l.Replace(flvm.ClientRepository + "\\", "");
                        flvm.Folders.Add(new FolderData() { FolderName = subOnly });
                    }

                    flvm.PropChanged("Folders");
                }
            };
            fs.GetFoldersAsync(flvm.ClientRepository);

            _canExecute = true;
        }