Hello,
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It looks like that that you just want to navigate to another page instead of the default MainPage. Here are the steps that you need to do:
1) Go to the App.xaml.cs file.
2) Find the OnLaunched event.
3) Find this line of the code :
rootFrame.Navigate(typeof(MainPage), e.Arguments);
4) Change the MainPage
into the page that you want to show.
5) Run your app again.
Thank you.
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