Silverlight - 调用WebServices

参考别人的例子,加入跨域访问部分,留作参考.

WebServices 项目: Service1 类和 Person类 注意因为是独立的Service项目,所以需要加入2个xml文件,实现跨域访问,加在根目录下

clientaccesspolicy.xml和crossdomain.xml

public   class  Service1 : System.Web.Services.WebService
    {

        [WebMethod]
         public   string  HelloWorld()
        {
             return   " Hello World " ;
        }

        [WebMethod]
         public  Person[] GetPeople()
        {
            List < Person >  People  =   new  List < Person > ()
　　　　　　　 {
　　　　　　　　　　  new  Person{ Name = " Jack " ,Age = 12 },
　　　　　　　　　　  new  Person{ Name = " Tom " ,Age = 22 },
　　　　　　　　　　  new  Person{ Name = " Simon " ,Age = 32 },
　　　　　　　　　　  new  Person{ Name = " Richard " ,Age = 26 }
　　　　　　　 };

             return  People.ToArray();
        }

    }

     public   class  Person
    {
         public   string  Name {  get ;  set ; }
         public   int  Age {  get ;  set ; }
    }

 

clientaccesspolicy.xml

<? xml version="1.0" encoding="utf-8"  ?>
< access-policy >
   < cross-domain-access >
     < policy >
       < allow-from  http-request-headers ="*" >
         < domain  uri ="*"   />
       </ allow-from >
       < grant-to >
         < resource  path ="/"  include-subpaths ="true" />
       </ grant-to >
     </ policy >
   </ cross-domain-access >
</ access-policy >

 

crossdomain.xml

<? xml version="1.0" encoding="utf-8" ?>
< access-policy >
   < cross-domain-access >
     < policy >
       < allow-from  http-request-headers ="*" >
         < domain  uri ="*"   />
       </ allow-from >
       < grant-to >
         < resource  path ="/"  include-subpaths ="true" />
       </ grant-to >
     </ policy >
   </ cross-domain-access >
</ access-policy >

 

服务端项目: 添加WebService的引用

Xaml

< UserControl  x:Class ="SLWenServices.MainPage"
    xmlns ="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x ="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d ="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc ="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable ="d"
    d:DesignHeight ="300"  d:DesignWidth ="400" >

     < StackPanel  Width ="400"  Height ="300"  Background ="Wheat" >
         < TextBlock  Text ="通过WebService取得的数据如下"  TextAlignment ="Center"  Foreground ="Red"  FontSize ="18" ></ TextBlock >
         < Button  x:Name ="btnGetWebService"  Width ="200"  Height ="30"  Content ="获取数据"  Click ="btnGetWebService_Click" ></ Button >
         < ListBox  x:Name ="People"  Width ="300"  Height ="200"  Margin ="20" >
            　　　　　　　　　　　
             < ListBox.ItemTemplate >
                 < DataTemplate >
                     < StackPanel  Orientation ="Vertical" >
                         < StackPanel  Orientation ="Horizontal" >
                             < TextBlock  Text ="姓名"  Width ="100"  Foreground ="Blue"   ></ TextBlock >
                             < TextBlock  Text ="年龄"  Width ="100"  Foreground ="DarkBlue" ></ TextBlock >
                         </ StackPanel >
                         < StackPanel  Orientation ="Horizontal" >
                             < TextBlock  Text =" {Binding Name} "  Foreground ="Red"  Width ="100"   ></ TextBlock >
                             < TextBlock  Text =" {Binding Age} "  Foreground ="Green"  Width ="100"   ></ TextBlock >
                         </ StackPanel >
                     </ StackPanel >
                 </ DataTemplate >
             </ ListBox.ItemTemplate >
         </ ListBox >
     </ StackPanel >

</ UserControl >

 

C#

using  System;
using  System.Collections.Generic;
using  System.Linq;
using  System.Net;
using  System.Windows;
using  System.Windows.Controls;
using  System.Windows.Documents;
using  System.Windows.Input;
using  System.Windows.Media;
using  System.Windows.Media.Animation;
using  System.Windows.Shapes;
using  SLWenServices.MyWebServiceRef;

namespace  SLWenServices
{
     public   partial   class  MainPage : UserControl
    {
         public  MainPage()
        {
            InitializeComponent();
            
        }
         private   void  btnGetWebService_Click( object  sender, RoutedEventArgs e)
        {
             // 使用WebService从服务器端得到数据并在本地端进行处理
            
            Service1SoapClient client  =   new  Service1SoapClient();
            client.GetPeopleCompleted  +=   new  EventHandler < GetPeopleCompletedEventArgs > (client_GetPeopleCompleted);

            client.GetPeopleAsync();
        }

         void  client_GetPeopleCompleted( object  sender, GetPeopleCompletedEventArgs e)
        {
             if  (e.Error  ==   null )
            {
                People.ItemsSource  =  e.Result;　 // 绑定结果到UI的List控件
            }
        }

        
    }
}