Using process.start to launch the default program for a file does not allow further control of process

Asked Sep 19 '14 at 11:02

Active Sep 19 '14 at 11:02

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I am trying to get my application to launch an MPG file in whatever application the user has set as their default player. I can do this by using:

Dim movie as Process = Process.Start("movie.mpg")

However I also need to know when the user has finished watching the video and has closed the default player application. For this I would normally use movie.HasExited but this returns Object reference not set to instance of object

I'm guessing the cause is that vb does not know what process was launched by windows as a result of opening an MPG file?

If so, how can I get my application to open the default (user defined) media player and still control the process?

Thanks

edited Sep 19 '14 at 11:02

Soner Gönül

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asked Sep 19 '14 at 11:02

James

[What is a NullReferenceException and how do I fix it?](http://stackoverflow.com/questions/4660142/what-is-a-nullreferenceexception-and-how-do-i-fix-it) – Soner Gönül Sep 19 '14 at 11:02
That doesn't really help. – James Sep 19 '14 at 12:04
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Can you post a bit more code. Where are you calling movie.HasExited? Your moive object may be out of scope. – Adam Sep 19 '14 at 13:12

Using process.start to launch the default program for a file does not allow further control of process

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