To view the the common steps to perform when you want to install and apply a recently purchased DlhSoft component library license file to your development computer(s) please read this article.
A multi-project solution sample application, with licensing information applied (i.e. Licenses.licx file placed within the main project, Properties folder) is available for download. It was developed using C# and Project Management Library version 3.1.8 (but the licensing mechanism is similar with Visual Basic® or other products or versions).