您好,
您可以用LicenseInformation.IsActive和 LicenseInformation.IsTrial来判断.
Trial Period: IsActive = true, IsTrial = true;
Fully Licensed: IsActive = true, IsTrial =NA;
License Expired: IsActive = false;
#LicenseInformation.IsActive:
https://msdn.microsoft.com/en-us/library/windows.applicationmodel.store.licenseinformation.isactive.aspx .
#LicenseInformation.IsTrial:
https://msdn.microsoft.com/en-us/library/windows.applicationmodel.store.licenseinformation.istrial.aspx .
---Amy Peng
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