Main vi freeze after close sub vi

Question

Dear all,
I call a sub vi from my main vi but when i close sub vi, the main vi become freeze. The sub vi is a vi i used to edit a data from my database, its close after execute a query. Freeze also happen if i close the sub vi with [x] in the corner window

Answer 1

Well, does it work if the [close] button is pressed on the front panel? Unfortunately, by closing the panel after an edit operation, you prevent access to that button and the subVI does not return.
All you need to do is remove that entire "close" related inner sequence and instead wire a TRUE to the termination condition of the while loop. Since your subVI is set to open the front panel when called and close afterwards, it will automatically close the VI when the loop (and thus the subVI!) completes. (make sure the subVI is closed before starting the main program!)
You can delete the timeout event since it is not used, but you should add a "panel close?" event to capture pressing of the X. Also complete the subVI loop under this condition.
Why are you doing everything with value property nodes? You should wire directly to the terminal instead. There are also potential race conditions.
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