ok i got it its MediaElement.SpeedRatio(); ya u r right its does't works for all formats.

Thanks Christian Graus can u please tell abt any such Third Party wrapper that can be used with C#. i had tried a dozen but did't find useful. Regards Rishi

Unfortunately you can't automatically remove the control deterministically. You could, possibly, remove the control by forcing a garbage collection, but this really is a bad idea. "WPF has many lovers. It's a veritable porn star!" - Josh Smith My blog | My articles | MoXAML PowerToys

Thanks Simon :)

Strictly speaking, you can. Silverlight runs in a web browser, which might be running on Windows (or not as the case may be). However, it will not be able to interact with the operating system, and runs inside the limits of the browser sandbox. If you want an application that works in Windows, and allows you to interact with the operating system then you need WPF. "WPF has many lovers. It's a veritable porn star!" - Josh Smith My blog | My articles | MoXAML PowerToys