How can I trigger/load avisynth like media player classic or ffmpeg.exe does?

I have an avs script say sample.avs If I drop this on media player classic or do open with OR

or I use the script with ffmpeg.exe it works.But if I simply type sample.avs on the command prompt the file opens in notepad.Can I write some code in C# to do something to trigger/load avi开发者_运维技巧synth like the player or ffmpeg.exe do.

thanks.

Set the default program e.g. VirtualDub to open AVS files. My setting is *.avs associated to AvsP, in that editor set the play button to open VirtualDub.