Project does not run after refresh

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VB

I use vb 2010
Sometimes when I change the codes or an object,
it does not show or does not work the code when run it
it shows the previous objects and run codes before the editing

then i change debug to release it work properly

how to fix it
any setting change or some thing else?

What I have tried:

I use vb 2010
Sometimes when I change the codes or an object,
it does not show or does not work the code when run it
it shows the previous objects and run codes before the editing

then i change debug to release it work properly

how to fix it
any setting change or some thing else?