本文我們學習如何在Silverlight中使用WebService進行通訊。
新建項目Silverlight應用程序，命名為：SLWebService。
在服務器端我們需要做兩項目工作:
1、在Web項目中新建一個類Person，我們將在WebService中返回它的實例化對象。Person類定義如下:

?

using?System;
using?System.Collections.Generic;
using?System.Linq;
using?System.Web;

namespace?SLWebService.Web
{
????public?class?Person
????{
????????public?string?Name?{?get;?set;?}
????????public?int???Age?{?get;?set;?}
????}
}

2、在Web項目中建立一個WebService,命名為MySLWebService.asmx,它的主要任務就是返回一個Person類數組,代碼如下:
?

?

Code
using?System;
using?System.Collections.Generic;
using?System.Linq;
using?System.Web;
using?System.Web.Services;

namespace?SLWebService.Web
{
????///?<summary>
????///?MySLWebService?的摘要說明
????///?</summary>
????[WebService(Namespace?=?"http://tempuri.org/")]
????[WebServiceBinding(ConformsTo?=?WsiProfiles.BasicProfile1_1)]
????[System.ComponentModel.ToolboxItem(false)]
????//?若要允許使用?ASP.NET?AJAX?從腳本中調用此?Web?服務，請取消對下行的注釋。
????//?[System.Web.Script.Services.ScriptService]
????public?class?MySLWebService?:?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();
????????}
????????
????}
}

在客戶端我們需要做如下工作:
1、建立用戶界面.Page.xaml代碼如下:

?

<UserControl?x:Class="SLWebService.Page"
????xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"?
????xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"?
????Width="400"?Height="300">
??<StackPanel?Width="400"?Height="300"?Background="Wheat">
?????????<TextBlock?Text="通過WebService取得的數據如下"?TextAlignment="Center"?Foreground="Red"??FontSize="18"></TextBlock>
?????????<Button?x:Name="btnGetWebService"?Width="200"?Height="30"?Content="獲取數據"?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="年齡"?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>

界面如下:

????????????????????????

2、在Silverlight項目中引用服務器端的WebService，命名為MyWebServiceRef。

????????????????????????
引用后，程序如下圖:

????????????????????????
3、在客戶端使用WebService，通過WebService從服務器端取得數據，在本地處理后顯示在用房界面上。Page.xaml.cs代碼如下:

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?SLWebService.MyWebServiceRef;?//加入對MyWebServiceRef的引用


namespace?SLWebService
{
????public?partial?class?Page?:?UserControl
????{
????????public?Page()
????????{
????????????InitializeComponent();
????????}

????????private?void?btnGetWebService_Click(object?sender,?RoutedEventArgs?e)
????????{
????????????//使用WebService從服務器端得到數據并在本地端進行處理
????????????MySLWebServiceSoapClient?client?=?new?MySLWebServiceSoapClient();???
????????????client.GetPeopleCompleted??+=?new?EventHandler<GetPeopleCompletedEventArgs>(client_GetPeopleCompleted);
????????????
????????????client.GetPeopleAsync();
????????}

????????void?client_GetPeopleCompleted(object?sender,?GetPeopleCompletedEventArgs?e)
????????{
????????????if?(e.Error?==?null)
????????????{
????????????????People.ItemsSource?=?e.Result;?//綁定結果到UI的List控件
????????????}
????????}

????}
}

效果如下圖:
????????????????????????

前往：Silverlight學習筆記清單

本文程序在Silverlight2.0和VS2008環境中調試通過。本文參照了部分網絡資料，希望能夠拋磚引玉，大家共同學習。
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轉載于:https://www.cnblogs.com/wsdj-ITtech/archive/2009/08/28/1555525.html

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