Thread Abort Problem (C#, Web Application)

[universe]

In my application on the DropDownList_It emIndexChanged event I am Playing a Audio File (using winmm.dll) in a Thread.
Though I stop my application audio is getting played till completion.

But My Requirement is to stop that audio file when the user clicks a button and also when the application is terminated.

I thank u all,
kiran.

[Plater]

Do you ever tell the audio to stop playing? These are API calls right, so you would need to actually tell it to stop instead of just changing it.

[universe]

yes, I tried with
mciSendString(s top, , , ) method. But audio file playing is continued.

is it possible to stop audio file when the web page is getting closed ? how can I do that?

[Plater]

Webpage? What? This is an activeX object?

[universe]

I am importing the "winmm.dll" in to my webapplication.
[DllImport("WinM M.dll")]
public static extern bool mciSendString(s tring lpstrCommand, string lpstrReturnStri ng, long uReturnLength, long hwndCallback);

[Plater]

But that would be backend code, and the sound would only play on the server?
Unless it's activex?