textbox - Dismiss Numeric Keyboard WP8 in Code Behind (VB) -

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so have numeric keyboard entering few numbers , according other apps , questions best way put done/cancel button application bar have setup without issues. problem when click on done or cancel button want dismiss keyboard can't seem figure part out. i've seen few other posts use this.focus(); that's c# , i'm using vb instead , far haven't been able find similar function.

the page still has method called 'focus()' in vb. problem that:

(c#) this (vb) me

so, it's:

me.focus()

or, simply:

focus()

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