c# - UWP, How to detect that a user have logged in before? -


i trying develop uwp application needs logged once. how can detect user have logged in before or not?

p.s. user may log out , should show log in page in next lunch.

store value in localsettings after loggedin first time

applicationdata.current.localsettings.values["loggedin"] = 1;

in app.xaml, use below code check value

if (applicationdata.current.localsettings.values.containskey("loggedin") == 1)

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