wpf - Refresh datagrid from child window -

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i found lot of answers questions buy sadely couldn't fix want exactky project. let consider have 2 windows, window1 contains 1 datagrid , 1 button, when click in button sends me window2 fill fields save record in database, problem when wondow2 closed cannot see record in datagrid in windows1 directly. knows how solve problem, please? in advanvce!


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