稳扎稳打Silverlight(20) - 2.0通信之WebClient, 以字符串的形式上传/下载数据, 以流的方式上传/下载数据

[索引页]

[源码下载]

[align=center]稳扎稳打Silverlight(20) - 2.0通信之WebClient, 以字符串的形式上传/下载数据, 以流的方式上传/下载数据[/align]

作者：webabcd

介绍

Silverlight 2.0 详解WebClient，以字符串的形式上传、下载数据；以流的方式上传、下载数据

WebClient - 将数据发送到指定的 URI，或者从指定的 URI 接收数据的类

DownloadStringAsync(Uri address, Object userToken) - 以字符串的形式下载指定的 URI 的资源

UploadStringAsync(Uri address, string data) - 以字符串的形式上传数据到指定的 URI。所使用的 HTTP 方法默认为 POST

OpenReadAsync(Uri address, Object userToken) - 以流的形式下载指定的 URI 的资源

OpenWriteAsync(Uri address, string method, Object userToken) - 打开流以使用指定的方法向指定的 URI 写入数据

在线DEMO

/article/4589581.html

示例

1、以字符串的形式和流的形式下载数据

WebClientDownload.xaml

<UserControl x:Class="Silverlight20.Communication.WebClientDownload"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

<StackPanel HorizontalAlignment="Left" Orientation="Horizontal">

<StackPanel Margin="5" Width="200">

<TextBox x:Name="lblMsgString" Margin="5" />

<ProgressBar x:Name="progressBarString" Height="20" Margin="5" Minimum="0" Maximum="100" />

</StackPanel>

<StackPanel Margin="5" Width="200">

<TextBox x:Name="lblMsgStream" Margin="5" />

<ProgressBar x:Name="progressBarStream" Height="20" Margin="5" Minimum="0" Maximum="100" />

<Image x:Name="img" Margin="5" />

</StackPanel>

</StackPanel>

</UserControl>

WebClientDownload.xaml.cs

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 System.IO;

namespace Silverlight20.Communication

using System;

using System.Linq;

using System.Runtime.Serialization;

using System.ServiceModel;

using System.ServiceModel.Activation;

using System.ServiceModel.Web;

using System.Collections.Generic;

using System.Text;

using System.IO;

[ServiceContract]

[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]

public class REST

WebClientUpload.xaml

<UserControl x:Class="Silverlight20.Communication.WebClientUpload"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

<StackPanel HorizontalAlignment="Left" Orientation="Horizontal">

<StackPanel Margin="5" Width="200">

<TextBox x:Name="lblMsgString" Margin="5" />

<ProgressBar x:Name="progressBarString" Height="20" Margin="5" Minimum="0" Maximum="100" />

<Button x:Name="btnString" Content="上传文件（字符串的方式）" Margin="5" Click="btnString_Click" />

</StackPanel>

<StackPanel Margin="5" Width="200">

<TextBox x:Name="lblMsgStream" Margin="5" />

<ProgressBar x:Name="progressBarStream" Height="20" Margin="5" Minimum="0" Maximum="100" />

<Button x:Name="btnStream" Content="上传文件（流的方式）" Margin="5" Click="btnStream_Click" />

</StackPanel>

</StackPanel>

</UserControl>

WebClientUpload.xaml.cs

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 System.IO;

using System.Windows.Resources;

using System.ComponentModel;

using System.Windows.Browser;

namespace Silverlight20.Communication

OK

[源码下载]