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ArgumentException when reading OPC items

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13 Feb 2020 13:21 #8223 by support
Replied by support on topic ArgumentException when reading OPC items
Hello,
this may be a QuickOPC bug. Thank you for reporting it. I have reviewed the code and found a possible missing synchronization.

The fix is in build 5.56.1073.1 or later. Please download the current version and rebuild with it.

Regards

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12 Feb 2020 11:31 #8220 by Andriy
ArgumentException when reading OPC items was created by Andriy
Hello,

I get ArgumentException when reading OPC items. Do you know what that can be?
build 5.56.1055.1
System.ArgumentException: Item has already been added. Key in dictionary: 'OpcLabs.EasyOpc.DataAccess.Implementation.ExceptionEnhancingEasyDAClient.Processed'  Key being added: 'OpcLabs.EasyOpc.DataAccess.Implementation.ExceptionEnhancingEasyDAClient.Processed'
   at System.Collections.ListDictionaryInternal.Add(Object key, Object value)
   at OpcLabs.EasyOpc.DataAccess.Implementation.ExceptionEnhancingEasyDAClient.ProcessError(Exception exception, Func`2 getDataItemFunction, String methodName)
   at OpcLabs.EasyOpc.DataAccess.Implementation.ExceptionProcessingEasyDAClient.Process(OperationResult[] operationResultArray, Func`3 getElementDataItemFunction, String methodName)
   at OpcLabs.EasyOpc.DataAccess.Implementation.ExceptionProcessingEasyDAClient.ReadMultipleItems(DAReadItemArguments[] argumentsArray)
   at OpcLabs.EasyOpc.DataAccess.EasyDAClient.ReadMultipleItems(DAReadItemArguments[] argumentsArray)

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  1. Forum
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  5. QuickOPC-Classic in .NET
  7. Reading, Writing, Subscriptions, Property Access
  9. ArgumentException when reading OPC items
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