How to close external application

I use "!"C:\Program Files\...." to open an external application.

Now, how do I make matlab wait until the program ends and CLOSE this external application?

Answer 1

[Jan]

There is no way to check, if the external program is ready.

If your application can signal that it is ready, you can close it by using taskkill.

Answer 2

[Image Analyst]

See my answer to a near identical problem: http://www.mathworks.com/matlabcentral/answers/119474#answer_126475