AutoCompleteBox從HttpWebRequest加載數據

我希望AutoCompleteBox可以通過請求在服務器上完成地址。我有這樣的方法來填充我的AutoCompleteBox：AutoCompleteBox從HttpWebRequest加載數據

private async void getNearStreets() 
     { 
      if (acbAddress.Text.Length > 2) 
      { 
       ApiRequest request = new ApiRequest("hintAddress", new HintAddress(appSettings.InstanceId, acbAddress.Text, appSettings.SmsCode)); 
       var postData = JsonConvert.SerializeObject(request); 
       var response = await HttpHelper.SendRequestGetResponse(postData); 
       ApiResponseTest apiResponse = (ApiResponseTest)JsonConvert.DeserializeObject<ApiResponseTest>(response); 
       var wordList = this.Resources["autoCompleteWordList"] as AutoCompleteWordList; 
       wordList.Clear(); 
       foreach (var adresa in apiResponse.data.result) 
       { 
        HintAddressResponse adrResponse = (HintAddressResponse)JsonConvert.DeserializeObject<HintAddressResponse>(adresa.ToString()); 
        wordList.Add(adrResponse.street); 
       } 
      } 
     }

這是我的課：

public class AutoCompleteWordList : INotifyPropertyChanged 
{ 
    public event PropertyChangedEventHandler PropertyChanged; 
    private ObservableCollection<string> _listOfAddresses; 
    public ObservableCollection<string> ListOfAddresses 
    { 
     get { return _listOfAddresses; } 
     set 
     { 
      _listOfAddresses = value; 
      if (PropertyChanged != null) 
       PropertyChanged(this, new PropertyChangedEventArgs("ListOfAddresses")); 
     } 
    } 

    public AutoCompleteWordList() 
    { 
     ListOfAddresses = new ObservableCollection<string>(); 
    } 

    public void Add(string address) 
    { 
     ListOfAddresses.Add(address); 

    } 

    public void Clear() 
    { 
     ListOfAddresses.Clear(); 
    } 
}

和看法：

<phone:PhoneApplicationPage.Resources> 
    <data:AutoCompleteWordList x:Key="autoCompleteWordList" /> 
</phone:PhoneApplicationPage.Resources> 

<toolkit:AutoCompleteBox x:Name="acbAddress" VerticalAlignment="Top" 
          ItemsSource="{Binding Source={StaticResource autoCompleteWordList}, Path=ListOfAddresses}" 
          TextChanged="acbAddress_TextChanged"/>

我的問題是，我下載的數據，我將它們添加到集合中，但DropDownDialog不顯示。我想我必須警惕我有新的數據，但我不知道如何。感謝您的幫助

來源

2013-02-21 Libor Zapletal

當我第一次看msdn時，我錯過了PopulateComplete方法。但是這是我需要的，當我在我的方法結束時添加它就可以工作。

來源

2013-02-21 16:09:24

AutoCompleteBox從HttpWebRequest加載數據

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