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All Places > PI Developers Club > Blog > 2017 > July > 19

This question comes up quite a bit at PI Square.  I know of at least 5 different ways to find out my AF Client version.  In a nutshell,


  1. From the registry settings
  2. From Programs and Features
  3. From the file properties in File Explorer
  4. From PI System Explorer (if also loaded on the client machine)
  5. From custom code


Let's go over each of these.


Registry Settings


Run regedit.exe

Navigate to:    Computer\HKEY_LOCAL_MACHINE\SOFTWARE\PISystem\AF Client

Alternative:     Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\PISystem\AF Client


2017-07-19 09_07_09-Registry Editor.png

2017-07-19 09_06_00-Registry Editor.png


2017-07-19 09_07_29-Registry Editor.png


Programs and Features

Trying to run this may take you to Apps and features.  You could filter the list to AF and see something like:


2017-07-19 09_11_51-Settings.png


If you really want the Version  number, look to the upper right of the window for Programs and Features:

2017-07-19 09_13_40-Settings.png


You should then have a list where you may scroll to:


2017-07-19 09_12_46-Programs and Features.png



File Properties in File Explorer


Using File Explorer, navigate to:     %PIHOME%\AF\PublicAssemblies\4.0


In my example below, %PIHOME% is "C:\Program Files (x86)\PIPC" but this could be a different drive on your machine.


2017-07-19 09_15_33-4.0.png


Right-click on the file:     OSIsoft.AFSDK.dll


Click on the Details tab along the tab bar at the top.


     2017-07-19 09_16_27-OSIsoft.AFSDK.dll Properties.png



From PI System Explorer


Open PSE

From the menu bar at the top, click on Help

Click on About PI System Explorer ...


2017-07-19 09_17_46-About PI System Explorer.png



Custom AFSDK Code


From a C# application that has a reference to OSIsoft.AFSDK.dll, you can use:


Console.WriteLine((new OSIsoft.AF.PISystems()).Version);


Or if you already have a  using OSIsoft.AF;  statement, this shorter version will do:


Console.WriteLine((new PISystems()).Version);


Or if you despise one-liners, you may try:


var clientSDK = new PISystems();

Console.WriteLine( clientSDK.Version );


For VB.NET, you would use an  Imports OSIsoft.AF  statement, and this line of code:


Console.WriteLine((New PISystems()).Version)


And finally, if you're not a developer or don't have Visual Studio, all is not lost.  You may still try using Powershell.



$clientSDK = New-Object OSIsoft.AF.PISystems

Write-Host "AF Client Version:" $clientSDK.Version


To produce output such as:


GAC    Version        Location

---    -------        --------                                                                                                                        

True   v4.0.30319     C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\OSIsoft.AFSDK\v4.0_4.0.0.0__6238be57836698e6\OSIsoft.AFSDK.dll                             AF Client Version:



There you go.  That's at least 5 different ways to get the AF Client Version number.  Are there any others that I may have missed?

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