Setting up your solution to add Microsoft Lync 2010 API functionality is simple and requires just a few steps.
Whether your project creates a library to act as an adaptor to be plugged into many of your Windows Forms executable projects or puts Lync 2010 API functionality directly into a Windows Forms project, you set project properties in exactly the same way.
On the Applicationtab of your project settings dialog, set the Target Frameworkto .NET Framework 3.5.
You do not need to add an application manifest to your solution or update an existing manifest for the Lync 2010 API.
On the Buildtab of your project settings dialog, set the Platform targetto Any CPU.