Windows phone也像傳統的.net應用一樣,可以方便的調用web service和WCF服務。
首先創建一個web service服務,因爲.NET Framework 4的版本沒有Web Service模板,所以選擇.NET Framework 3.5來創建「ASP.NET Web服務應用程序」:
在Service.cs中的Service的類中寫如下方法:
- [WebMethod]
- public byte[] GetCity()
- {
- System.IO.MemoryStream m = new System.IO.MemoryStream();
- System.Drawing.Bitmap bp = new System.Drawing.Bitmap(Server.MapPath("~")[email protected]"/a.jpg");
- bp.Save(m, System.Drawing.Imaging.ImageFormat.Jpeg);
- return m.GetBuffer();
- }
.NET Framework 4下創建「WCF服務應用程序」:
在IService1.cs接口中添加如下方法:
- [OperationContract]
- byte[] GetCity();
在子類Service1中添加如下方法:
- public byte[] GetCity()
- {
- System.IO.MemoryStream m = new System.IO.MemoryStream();
- System.Drawing.Bitmap bp = new System.Drawing.Bitmap(@"C:\Users\GSW\Documents\Visual Studio 2010\Projects\WebSite4\WcfService1\a.jpg");
- bp.Save(m, System.Drawing.Imaging.ImageFormat.Jpeg);
- return m.GetBuffer();
- }
創建Windows Phone, 「添加服務引用」,引入web service或wcf服務,引用服務默認名稱爲「ServiceReference1」,的頁面後臺添加代碼如下:
- //定義服務引用對象
- ServiceReference1.Service1Client serviceclient;
- public MainPage()
- {
- InitializeComponent();
- serviceclient = new ServiceReference1.Service1Client();
- //爲異常完成事件添加回調方法
- serviceclient.GetCityCompleted += new EventHandler<ServiceReference1.GetCityCompletedEventArgs>(serviceclientc_GetCityCompleted);
- }
- private void button1_Click(object sender, RoutedEventArgs e)
- {
- //調用異常方法
- serviceclient.GetCityAsync();
- }
- void serviceclient_GetCityCompleted(object sender, ServiceReference1.GetCityCompletedEventArgs e)
- {
- //回調方法中完成圖片的加載顯示
- byte[] buf = e.Result;
- System.IO.MemoryStream stream = new System.IO.MemoryStream(buf);
- BitmapImage img = new BitmapImage();
- img.SetSource(stream);
- p_w_picpath1.Source = img;
- }
不管是web service還是wcf服務,Windows Phone中使用方法都是一至的,採用異步調用方式,這樣用戶體驗要好一些。