The AF SDK library is a Microsoft .NET assembly that provides structured access to OSIsoft data. The AF SDK is designed for easy access from Microsoft .NET languages like Visual Basic, C#, and Managed C++. The AF SDK is available for .NET 3.5 and .NET 4.5 Frameworks and targets Any CPU so that it is available for both 32-bit and 64-bit Windows operating systems.

Install kit:  The PI AF Software Development Kit (PI AF SDK or AFSDK) is installed with the PI AF Client and provides programmatic access to PI Server data (PI Data Archive and AF). 

Code examples:  AF Code examples and programming references are available online, or once installed from from the PIPC\HELP\AFSDK.chm Help file.

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