Xceed’s .NET components can be using a trial license key set in your code for a 45-day trial period. During this time, the components are fully functional. A trial license key can be obtained
The trial period for Xceed’s components begins at the time of installation. Once the trial period has ended, a registered license key is needed to continue using them (see the License the components page for details). If you attempt to use a component after the trial period or without a registered license key, an exception will be thrown and you will not be able to use it.