SharePoint 视频播放WebPart

代码是摘自建义的亮剑一书里面的代码 ，代码如下

using System;
using System.Collections.Generic;
using System.Text;
using System.Web.UI.WebControls.WebParts;

namespace CodeArt.SharePoint.WebParts
{
    /// <summary>
    /// 可以制定一个视频文件的路径进行播放
    /// </summary>
    public class VideoWebPart : BaseSPWebPart
    {
        private string _VideoURL;
        [Personalizable(PersonalizationScope.Shared)]
        [WebBrowsable]
        [WebDisplayName("视频文件路径")]
        public string VideoURL
        {
            get { return _VideoURL; }
            set { _VideoURL = value; }
        }

        const string html = @"<object name='wmplayer' classid='CLSID:22d6f312-b0f6-11d0-94ab-0080c74c7e95' codebase='http://activex.microsoft.com/activex/  
 controls/mplayer/en/  
 nsmp2inf.cabVersion=6,4,5,715' </DIV>  
 type='application/x-oleobject' width=405 height=340 hspace='0'   
 standby='Loading Microsoft Windows Media Player components'   
 id='NSPlay'>  
               <param name='AutoRewind' value=0>  
               <param name='FileName' value='{0}'/>
               <param name='ShowControls' value='1'>  
               <param name='ShowPositionControls' value='0'>  
               <param name='ShowAudioControls' value='1'>  
               <param name='ShowTracker' value='0'>  
               <param name='ShowDisplay' value='0'>  
               <param name='ShowStatusBar' value='1'>  
               <param name='ShowGotoBar' value='0'>  
               <param name='ShowCaptioning' value='0'>  
               <param name='AutoStart' value='1'>  
               <param name='Volume' value='2000'>  
               <param name='AnimationAtStart' value='0'>  
               <param name='TransparentAtStart' value='0'>  
               <param name='AllowChangeDisplaySize' value='1'>  
               <param name='AllowScan' value='0'>  
               <param name='EnableContextMenu' value='0'>  
               <param name='ClickToPlay' value='0'>  
             </object>";

        protected override void RenderContents(System.Web.UI.HtmlTextWriter writer)
        {
            if (!String.IsNullOrEmpty(this.VideoURL))
                writer.Write( String.Format( html , this.VideoURL ) );
        }

    }
}