How to make the flash player background transparent in c#

I have used ShockwaveFlash activeX control to display .swf file on the form. And to make the b开发者_如何学Goackground transparant i set Wmode to transparent but the control is not showing transparant background. How can i set the ShockwaveFlash background transparent

Thanks,

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The swf file's author needs to remove its own background. Not much what you can do after doing your part.

BTW, add a winform and a flash tag will help you. Your question has nothing to do with which language you use.