c# - Timed Background Task in Windows Store App? -

i want background task runs in windows 8 app, example, every 30 mins. task refresh cached data app uses. should run asynchronously , not interfere user doing.

i read backgroundtask , timer can used, however, seems can used if app placed in lockscreen.

is there way want without adding app lockscreen? users lock screen since app active.

thank you!

there no trick work around background timer without screen-enabled app.

what task refresh cached data app uses

if want refresh cache data when app still active, can use dispatchertimer instead of background timer.