How do I play a sound in an asp.net web page?

You cannot play a file on a web page using the System.Media.Soundplayer class !!!

Reason

It will play sound on server-side not client-side.

As mentioned as in below links
Problem With The C# System.Media.SoundPlayer Class On A Web Host
What is the most “compatible” way of autoplaying sound ?

Solution

  • Other SO Answer over this same requirements.
  • Use Any other Flash or Silverlight based plugins.
  • Use html embed tag or html5 audio tag. Examples can be seen on w3schools

Html5-based audio solutions (works on modern browsers only)

  • <embed> tag: The <embed> tag defines a container for external (non-HTML) content. (It is an HTML5 tag, invalid in HTML 4, but works in all browsers).
<embed height="100" width="100" src="https://stackoverflow.com/questions/12329191/horse.mp3" />
  • <object> tag: The <object> tag can also define a container for external (non-HTML) content.
<object height="100" width="100" data="https://stackoverflow.com/questions/12329191/horse.mp3"></object>
  • <audio> tag: The <audio> element is an HTML5 element, invalid in HTML 4, but it works in all browsers.
<audio controls="controls" height="100" width="100">
  <source src="https://stackoverflow.com/questions/12329191/horse.mp3" type="audio/mp3" />
  <source src="horse.ogg" type="audio/ogg" />
  <embed height="100" width="100" src="https://stackoverflow.com/questions/12329191/horse.mp3" />
</audio>

Please note the problems with html5-based solutions you must convert your videos to different formats.
– The <audio> element does not validate as HTML 4 and XHTML.
– The <embed> element does not validate as HTML 4 and XHTML.
– The <embed> element cannot “fall-back” to display an error.

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