[WP8] How to determine if an application is running for the first time?

Question

Windows phone

How can I find out if the application is launched for the first time on Win Phone 8?
Do I need to save something in the state or are there methods for this?
Example: When the application is launched for the first time, it is necessary to display help to the user on working with the program, but this should not be done on subsequent launches.

Answer 1

In the configuration file, create a variable in which to save the information whether the application was launched or not, if not, show help, after showing help, overwrite the variable. Dig towards IsolatedStorageSettings.ApplicationSettings

Answer 2

I think that it is possible to create a file in which to record the number of launches, and in the program to check and display help as you need

Answer 3

you can write the launch date, for example,
and in the case of the current date above the last update, even show the message "we have updates, do you want to know what's new?"