每秒从jsonweb服务获取数据
本文关键字:获取 数据 服务 jsonweb | 更新日期: 2023-09-27 18:28:49
我为一个windowsphone项目创建了一个json web服务。我需要每秒钟从web服务中恢复数据,我使用带有线程的DispatcherTimer系统
private void client_DownloadInfoConf(object sender, DownloadStringCompletedEventArgs e)
{
if (e.Error == null)
{
//some code
DispatcherTimer TradeThread = new DispatcherTimer();
TradeThread.Interval = TimeSpan.FromMilliseconds(1000);
TradeThread.Tick += new EventHandler(dispatcherTimer_Tick);
TradeThread.Start();
}
else
MessageBox.Show("Error : " + e.Error);
}
private void dispatcherTimer_Tick(object sender, EventArgs e)
{
WebClient client_quest = new WebClient();
client_quest.DownloadStringAsync(new Uri("url" + info_conf.id));
client_quest.DownloadStringCompleted += new DownloadStringCompletedEventHandler(client_DownloadQuestConf);
}
private void client_DownloadQuestConf(object sender, DownloadStringCompletedEventArgs e)
{
if (e.Error == null)
{
string text = e.Result;
QuestConf resultat = JsonConvert.DeserializeObject<QuestConf>(e.Result);
string sub = texte.Substring(0, 5);
TextBlock text_quest = new TextBlock();
foreach (var cust in resultat)
{
//The problem is here, i can't retrieve data from the object
}
}
else
MessageBox.Show("Error" + e.Error);
}
这里的问题是,如果我试图从"var cust"中获取数据,就会发生错误,我无法从对象中提取数据。。。
类,用于提取json web服务的数据
public class Question
{
public string id { get; set; }
public string category { get; set; }
public string name { get; set; }
public string value { get; set; }
}
public class Answer
{
public string id { get; set; }
public string label { get; set; }
}
public class QuestConf:List<object>
{
public Question question { get; set; }
public List<Answer> answers { get; set; }
}
提前感谢您的帮助
如果您从web服务获取数据并希望反序列化到对象,我认为您应该将[DataContract]和[DataMember]属性添加到类和属性中。对您从web服务中检索到的每个对象都这样尝试:
[DataContract]
public class QuestConf:List<object>
{
[DataMember]
public Question question { get; set; }
[DataMember]
public List<Answer> answers { get; set; }
}