You can obtain the edtFTPnet/PRO trial license key by executing the following command in the Windows console:
reg query "HKEY_CURRENT_USER\Software\Enterprise Distributed Technologies\edtFTPnet PRO" /v LicenseKey
This will output something like this:
HKEY_CURRENT_USER\Software\Enterprise Distributed Technologies\edtFTPnet PRO
LicenseKey REG_SZ 123-1234-1234-1234
The trial license key is the four-part number on the second line. For the trial, the license owner is always TrialUser.
To set use these in code:
mySecureFTPConnection.LicenseOwner = "TrialUser";
mySecureFTPConnection.LicenseKey = "123-1234-1234-1234";
make sure to substitute in the license key you obtained from output of the command above.