Question

我想知道如何将Windows Azure中的MobileServiceCollection插入到JSON Web服务的ObservableCollection中

private ObservableCollection<AddressDetail> _hereRestAddressDetail = null;
public ObservableCollection<AddressDetail> hereRestAddressDetail
{
    get { return _hereRestAddressDetail; }
    set { this.SetProperty(ref this._hereRestAddressDetail, value); }
}



private async void UpdateTransportDetail()
{
    try
    {
       WebClient client = new WebClient();
       client.DownloadStringCompleted += (s, e) =>
       {
           if (e.Error == null)
            {
               RootObjectDetail result = JsonConvert.DeserializeObject<RootObjectDetail>(e.Result);
               hereRestAddressDetail.Clear();
               hereRestAddressDetail.Insert(0,result);    
            }
            else
            {
               isFailed = Visibility.Visible;
               isFailedMessage = "Can't get data from web server, please refresh and make sure your internet data connected";
            }
        };
        client.DownloadStringAsync(new Uri(hrefText + transportDetailURL));
        hereRestAddressDetail = await addressTable.ToCollectionAsync();
     }
     catch (Exception)
     {
         isFailed = Visibility.Visible;
         isFailedMessage = "Something wrong happen, please refresh";
     }
}

我尝试做的是将我的azure数据添加到hereRestAddressDetail的下一个条目中（因为第一个来自json web服务），这个

hereRestAddressDetail = await addressTable.ToCollectionAsync();

但它只是替换了json中没有添加它的数据，我怎样才能让它与我的json数据一起出现呢？

Answer 1

不确定问题是否仍然存在，但您可以替换while集合

hereRestAddressDetail = new ObservableCollection<AddressDetail>(await addressTable.ToCollectionAsync());

或者（我推荐这种方式）抓取OptimizedObservableCollection（例如，这里：http://www.pedrolamas.com/2013/05/08/cimbalino-windows-phone-toolkit-updated-to-v2-3-0/）并像

一样使用它

hereRestAddressDetail.ReplaceWith(await addressTable.ToCollectionAsync()); // replace
or 
hereRestAddressDetail.AddRange(await addressTable.ToCollectionAsync()); // add

将MobileServiceCollection添加到ObservableCollection

1 个答案: