In order for the library to work at runtime, the first thing you must do before calling any of the library's functions is to call the License method and provide it with your trial or registered license key.
Your trial or registered license key can be obtained by running the 'Xceed Component Licenser' application which can be run from the Start Menu by selecting the Program files ->Xceed Components -> Xceed Component Licenser item.
If you have purchased a registered license of the product, you should provide your registered license key to the Xceed Component Licenser in order to replace the automatically generated free trial license key.
The free trial version of the Xceed FTP Library v1.1 includes everything the registered version does, except the license rights to distribute applications you create that use the library. That means you get the complete documentation, code examples, sample applications with fully commented source code and free technical support by email or telephone.
The free trial version is intended to allow you to design, code and test applications that use the Xceed FTP Library for 45 days. The 45-day trial period begins when you first install the library on your development system. After the trial period ends, any calls made to the library's methods will return a licensing error code. Only registered users are permitted to distribute applications that use the library outside their test or development environments.
When you decide that you like the library and will use it in your projects, all you have to do after purchasing a registered copy of the product is to start providing your registered license key to the License method instead of your free trial license key.