Thank you for your question.
The RateApplicationReminder's purpose is to remind the user to rate the app in the marketplace. This happens by opening a message box with a nice message. To display the message, you need to call RadRateApplicationReminder's Notify method. You can place it where you decide it is most appropriate to notify the user, for example in the MainPage's constructor. You can also choose where to place the other two lines:
RadRateApplicationReminder rateReminder =
rateReminder.RecurrencePerUsageCount = 50;
Just make sure that they are before calling the Notify method. You can place them in the MainPage's constructor as well or you can also define the RateApplicationReminder in the App.xaml.cs file of your application and call it's Notify method later from any page through:
Note that before using RateApplicationReminder you also need to initialize the ApplicationUsageHelper with:
where "version" is the version of your application.
You can read more about the RateApplicationReminder and our other controls from the online documentation
I hope this information will help you.
the Telerik team
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