Hi,
  in asp.net a Literal control will help u to play video and Audio
just drag it in your page and in aspx.cs page
write following code
 string myobj = "";

        myobj += "<video width='462'  controls='controls' data-setup='{}'>";
        myobj += "<source src='http://www.yourdomain.com/videos/Video.mp4' type='video/ogg' />";

        myobj += "Your browser does not support video";

        myobj += "</object>";
        myobj += "</video>";

        Literal1.Text = myobj;
Note- video path must be same as above

for audio replace script by Following

<audio controls="controls">
  <source src="song.ogg" type="audio/ogg" />
  <source src="song.mp3" type="audio/mpeg" />
  Your browser does not support the audio element.
</audio>


Hope this help u
best Luck
Happy Coding :)

请参考以下主题:

流媒体 [ ASP.NET中的网络视频 [如何在asp中播放视频文件.net [ ^ ]

Please refer following threads:

Streaming Media[^]
Web Video in ASP.NET[^]

Have a look: how to play a video file in asp.net[^]

查看此处以在ASP.NET中显示视频:
ASP.NET嵌入式视频播放器(***™API，C#)
使用ASP.NET 2.0，IIS和HTTP处理程序的视频流
在.net中显示视频(带有Asp.net的C#)
在ASP.NET 2.0中显示视频

Look here for displaying video in ASP.NET:
ASP.NET Embedded Video Player (***™ API, C#)
video streaming with ASP.NET 2.0, IIS and HTTP handler
display video in .net ( C# with Asp.net )
Display videos in ASP.NET 2.0