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Error on VS 2008 Class Library project: are you missing an assembly reference?)

Posted By:      Posted Date: September 15, 2010    Points: 0   Category :SharePoint
http://msdn.microsoft.com/en-us/library/bb153523(office.12).aspx Working with ASP.NET 2.0 Web Parts and Windows SharePoint Services 3.0 Based on the above MSDN Walkthrough, I created a Class Library VS 2008 project. When clicking the Build menu, 11 errors on System.Web.Security etc popped up.  What's wrong? *********************************************** using   System; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; Error 1 The type or namespace name 'Security' does not exist in the namespace 'System.Web' (are you missing an assembly reference?) Error 2 The type or namespace name 'UI' does not exist in the namespace 'System.Web' (are you missing an assembly reference?)

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