changing video aspect ratio programmatically using C#

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C#

how can i changing video aspect ratio of windows media player axWindowsMediaPlayer programmatically using C#.

We can determine the height and width resolution of screen using following commands

SystemInformation.VirtualScreen.Width
SystemInformation.VirtualScreen.Height

and some of the available standard ration are 4:3, 5:4, 16:10, 16:9.

how can either i programmatically adjust aspect ratio automatically according to screen resolution or put it over a hot-key to change one after another so that user can him/her(self) change change it one after other to adjust it on his/her screen.