本文我们学习如何在Silverlight中使用WebService进行通讯。
新建项目Silverlight应用程序,命名为:SLWebService。
在服务器端我们需要做两项目工作:
1、在Web项目中新建一个类Person,我们将在WebService中返回它的实例化对象。Person类定义如下:
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; }
}
}
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项目中建立一个WebService,命名为MySLWebService.asmx,它的主要任务就是返回一个Person类数组,代码如下:
Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
namespace SLWebService.Web
{
/// <summary>
/// MySLWebService 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务,请取消对下行的注释。
// [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();
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
namespace SLWebService.Web
{
/// <summary>
/// MySLWebService 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务,请取消对下行的注释。
// [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();
}
}
}
在客户端我们需要做如下工作:
1、建立用户界面.Page.xaml代码如下:
<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>
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>
界面如下:
2、在Silverlight项目中引用服务器端的WebService,命名为MyWebServiceRef。
引用后,程序如下图:
3、在客户端使用WebService,通过WebService从服务器端取得数据,在本地处理后显示在用房界面上。Page.xaml.cs代码如下:
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; //加入对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从服务器端得到数据并在本地端进行处理
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; //绑定结果到UI的List控件
}
}
}
}
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; //加入对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从服务器端得到数据并在本地端进行处理
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; //绑定结果到UI的List控件
}
}
}
}
效果如下图:
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