winforms - Calculator windows forms c# -

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this question has answer here:

i'm working on university project of windows forms calculator c#.

is functional, question is.

can insert numbers in main textbox without focusing on it. want work windows calculator , insert numbers without having click textbox.

i've try lot of methods using event key_press directly on form nothing works.

ps. windows calculator.

set form.keypreview property true , handle form_keypress event.


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