public void Reload(int last)
{
var foo = _myRepository.GetNext(last);
foreach (var item in foo)
{
MyDatas.Add(item);
}
}
/// <summary>
/// 這裡是非同步函式，要回傳 Task，不要使用 void
/// </summary>
/// <param name="last"></param>
public async Task Reload(int last)
{
Loading = true;
var foo = _myRepository.GetNext(last);
await Task.Delay(2000);
foreach (var item in foo)
{
MyDatas.Add(item);
}
Loading = false;
}
public MainPageViewModel(INavigationService navigationService)
{
_navigationService = navigationService;
_myRepository = MyRepository.GetInstance();
ItemAppearingCommand = new DelegateCommand <MyModel>((x) =>
{
var fooLast = MyDatas.Last();
if (x.ID == fooLast.ID)
{
Reload(fooLast.ID + 1);
}
});
}