Special thanks to Daviday
Subscribe to his YouTube
After registering, run your application. The trial popup should disappear. You can also verify programmatically:
If your subscription renews, your existing key remains valid for the version you originally downloaded. To use a newer version of Syncfusion, you must re-generate a new license key from your account. syncfusion generate license key
Possible values: Unregistered , Valid , Invalid , Expired , Trial , TrialExpired . After registering, run your application
: You must use a key that matches the major version of the Syncfusion assemblies you are using (e.g., a version 21.x key will not work for version 22.x assemblies) . syncfusion generate license key