Effective use of add-ins can dramatically improve developer efficiency and reduce costs. Writing Add-Ins for Visual Studio. NET is designed to get the add-in developers up to speed in developing ad-ins in Visual Studio. NET and to teach add-in development for developers who want to learn to write add-ins. Author Les Smith also provides enough real code examples to challenge even experienced add-in developers. Smith's book begins by teaching readers how to use the Add-In Wizard to create add-ins basic framework. Smith also discusses the migration of the add-ins from VB 6.0 to VB. NET for developers who have previous experience in writing add-ins. One of the great challenges that add-in developers will encounter is finding the appropriate class from the class of 3400 .. NET Framework