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06 Aug 2015 16:10 #3479 by support
Replied by support on topic first try
This is an extension method. Have you also referenced the EasyOpcClassicExtensions assembly?

Best regards

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06 Aug 2015 15:04 #3478 by king
first try was created by king
Error 1 'OpcLabs.EasyOpc.DataAccess.EasyDAClient' does not contain a definition for 'ReadItemValue' and no extension method 'ReadItemValue' accepting a first argument of type 'OpcLabs.EasyOpc.DataAccess.EasyDAClient' could be found (are you missing a using directive or an assembly reference?) c:\users\gking\documents\visual studio 2013\Projects\OPCWinForm\WindowsFormsApplication1\Form1.cs 22 43 WindowsFormsApplication1

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