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Beginning Windows Phone 7 Development by Eugene Chuvyrov, Henry Lee

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Chapter 11. Creating Trial Applications

Today, most mobile software vendors maintain two versions of their application code, one for the trial version and another for purchase. The code base for the trial version typically includes some—but not all—of the functionality of the full version, as well as code that urges users to upgrade to the full version of the product. The Windows Phone 7 platform, however, eliminates the need for this practice thanks to the handy IsTrial method. The IsTrial method of the Microsoft.Phone.Marketplace.LicenseInformation class provides the functionality you need to create a trial version. Microsoft.Phone.Marketplace.LicenseInformation is a sealed class that contains the methods you'll use to test your applications. ...

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