Receive an error message when compile the project:The type or namespace name 'FastReport' could not be found (are you missing a using directive or an assembly reference?)

Question: Receive an error message when compile the project:The type or namespace name 'FastReport' could not be found (are you missing a using directive or an assembly reference?)

Answer:

Make sure that the project include links to the required libraries (FastReport.dll, FastReport.Web.dll). Check the .NET Framework version used by your project and the connected library.