Vb.NET Disabling timer when window loses focus -

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i'm developing quiz software in vb. net has 2 separate windows after login. i've added timers each of windows. issue how disable timer count of 1 window when mouse focus on other window??

as hans suggested, use form deactivate event.

private sub form1_deactivate(sender object, e eventargs) handles mybase.deactivate     ' deactivate forms timer end sub

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