StringHelpers in Chapter 8 gives a build error
StringHelpers, built in Chapter 4 for the UI, has been added to the Framework in the BLL. When the download module is added to the BLL project and the project is built, System.Web.UI is not found and returns and error. Commenting out the using statement, provides an undefined on HttpUtility.
What assembly should be referenced in the BLL project that I've missed?
Any guidance will be greatly appreciated.