Silverlight 5动态流URI设置

Question

我不熟悉Silverlight（5），但认为我已经接近了我想要做的工作。感谢任何帮助。

基本上，我需要将动态生成的平滑流URI传递给播放器，并正确设置“媒体源”。

步骤我走..

客户端调用，一个键 - 值对..

<param name="InitParams" value="mediaurl=http://playready.directtaps.net/smoothstreaming/TTLSS720VC1/To_The_Limit_720.ism/Manifest" /> 

MainPage.xaml中..

<!--Media:PlaylistItem DeliveryMethod="AdaptiveStreaming" MediaSource="mPlayer" /--> 

App.xaml.cs

public Dictionary<string, string> PageData = new Dictionary<string, string>(); 
private void Application_Startup(object sender, StartupEventArgs e) 
{ 
    var paramValues = e.InitParams; 

    foreach (var param in paramValues) 
    { 
     this.PageData.Add(param.Key, param.Value); 

    } 

    this.RootVisual = new MainPage(); 

} 

MainPage.xaml.cs ..

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

     App currentApp = (App)Application.Current; 

     string uriString = currentApp.PageData["mediaurl"]; 

     MessageBox.Show(uriString); 

     Microsoft.SilverlightMediaFramework.Core.Media.PlaylistItem item = new Microsoft.SilverlightMediaFramework.Core.Media.PlaylistItem(); 

     item.MediaSource = new Uri(uriString, UriKind.Absolute); 

     item.DeliveryMethod = 
      Microsoft.SilverlightMediaFramework.Plugins.Primitives.DeliveryMethods.AdaptiveStreaming; 

     //Add PlaylistItem to the Media playlist 
     Microsoft.SilverlightMediaFramework.Core.SMFPlayer SMFPlayer = new Microsoft.SilverlightMediaFramework.Core.SMFPlayer(); 

     SMFPlayer.Playlist.Add(item); 

     SMFPlayer.Play(); 


    } 
} 

Visual Studio 2015编译器不会与MainPage.xaml.cs抱怨，但它不起作用。 Silverlight播放器播放的静态URI很好，但不包含在InitParam中传递的URI。

Answer 1

你说，设置URL手动像这样的作品...

<Media:PlaylistItem DeliveryMethod="AdaptiveStreaming" MediaSource="http://playready.directtaps.net/smoothstreaming/TTLSS720VC1/To_The_Limit_720.ism/Manifest" /> 

在这种情况下

，那么你需要更新视图，这样就可以使控制的名字从后面的代码（IDE）进行访问。

<Media:PlaylistItem x:Name="playListItem" DeliveryMethod="AdaptiveStreaming"/> 

，然后在后面的代码，参考控制

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

     App currentApp = (App)Application.Current; 

     string uriString = currentApp.PageData["mediaurl"]; 

     MessageBox.Show(uriString); 

     //reference item by name 
     Microsoft.SilverlightMediaFramework.Core.Media.PlaylistItem item = this.playListItem; 

     item.MediaSource = new Uri(uriString, UriKind.Absolute); 
     //...other code 
    } 
} 

另一个例子来自我给你做了这样的链接。

在MainPage.xaml中

<Grid x:Name="LayoutRoot" Background="White" 
    xmlns:smf="http://schemas.microsoft.com/smf/2010/xaml/player"> 
    <smf:SMFPlayer HorizontalAlignment="Stretch" Margin="0" 
     x:Name="sMFPlayer" VerticalAlignment="Stretch" /> 
</Grid> 

在MainPage.xaml.cs中

using Microsoft.SilverlightMediaFramework.Core.Media; 
using Microsoft.SilverlightMediaFramework.Plugins.Primitives; 
//... 
public partial class MainPage : UserControl 
{ 
    public MainPage() 
    { 
     InitializeComponent(); 

     App currentApp = (App)Application.Current; 

     string uriString = currentApp.PageData["mediaurl"]; 

     var item = new PlaylistItem(); 
     item.MediaSource = new Uri(uriString, UriKind.Absolute); 
     item.DeliveryMethod = DeliveryMethods.AdaptiveStreaming; 

     //Add PlaylistItem to the Media playlist 
     sMFPlayer.Playlist.Add(item); 
     sMFPlayer.Play(); 
    } 
}