protected override async Task OnParametersSetAsync()
{
ListId ??= (await TodoListService.GetAllLists()).FirstOrDefault()?.Id;
if (ListId == null)
{
var todoList = new Models.TodoList {
Name = "First Todo List"
};
await TodoListService.Add(todoList);
ListId = todoList.Id;
}
TodoItems = new ObservableCollection <TodoItem>(await TodoItemService.GetList(ListId));
}