Question

我正在使用带有Windows Media Service的Windows Server 2008 R2。在客户端，我想使用Silverlight播放媒体文件。我使用的是VSTS 2008 + Silverlight 3 + ASP.Net + .Net 3.5。我想知道Silverlight是否支持从Windows Media Service播放mms流媒体文件？如果是，我可以快速测试任何代码样本吗？

Answer 1

Silverlight中的MediaElement支持通过mms进行流式传输。您应该查看Silverlight的MSDN audio and video overview。

这是一个非常基本的Silverlight应用程序，它可以控制MediaElement并显示媒体状态/缓冲状态：

<强> XAML

<UserControl x:Class="StreamingTest.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:DesignWidth="640" d:DesignHeight="480">
    <Grid x:Name="LayoutRoot">
        <StackPanel Orientation="Vertical">
            <MediaElement x:Name="MediaElement" Width="640" Height="480" Source="mms://danarec:8080"/>
            <StackPanel Orientation="Horizontal" HorizontalAlignment="Center">
                <TextBlock x:Name="Status" Margin="0,5"/>
                <TextBlock x:Name="Buffer" Margin="10,5"/>
            </StackPanel>
            <StackPanel Orientation="Horizontal" HorizontalAlignment="Center">
                <Button x:Name="Play" Content="Play" Click="Play_Click"/>
                <Button x:Name="Pause" Content="Pause" Click="Pause_Click"/>
                <Button x:Name="Stop" Content="Stop" Click="Stop_Click"/>
            </StackPanel>
        </StackPanel>
    </Grid>
</UserControl>

<强> C＃

public partial class MainPage : UserControl
{
    public MainPage()
    {
        InitializeComponent();

        this.MediaElement.CurrentStateChanged += (sender, e) =>
        {
            this.Status.Text = this.MediaElement.CurrentState.ToString();
            this.Buffer.Visibility = this.MediaElement.CurrentState == MediaElementState.Buffering ? Visibility.Visible : Visibility.Collapsed;
        };

        this.MediaElement.BufferingProgressChanged += (sender, e) =>
        {
            this.Buffer.Text = string.Format("{0:0.0} %", this.MediaElement.BufferingProgress * 100);
        };
    }

    private void Play_Click(object sender, RoutedEventArgs e)
    {
        this.MediaElement.Play();
    }

    private void Pause_Click(object sender, RoutedEventArgs e)
    {
        this.MediaElement.Pause();
    }

    private void Stop_Click(object sender, RoutedEventArgs e)
    {
        this.MediaElement.Stop();
    }
}

Silverlight是否支持通过mms流式传输？

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