// This example shows how to obtain a dictionary of OPC property values for an OPC item, and extract property values. // // Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . // OPC client and subscriber examples in C# on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-CSharp . // Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own // a commercial license in order to use Online Forums, and we reply to every post. using System; using OpcLabs.EasyOpc.DataAccess; using OpcLabs.EasyOpc.DataAccess.Extensions; using OpcLabs.EasyOpc.OperationModel; namespace DocExamples.DataAccess._EasyDAClientExtension { class GetPropertyValueDictionary { public static void Main1() { // Instantiate the client object. var client = new EasyDAClient(); // Get dictionary of property values, for all well-known properties DAPropertyValueDictionary propertyValueDictionary; try { propertyValueDictionary = client.GetPropertyValueDictionary("", "OPCLabs.KitServer.2", "Simulation.Random"); } catch (OpcException opcException) { Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message); return; } // Display some of the obtained property values // The production code should also check for the .Exception first, before getting .Value Console.WriteLine("propertyValueDictionary[DAPropertyId.AccessRights].Value: {0}", propertyValueDictionary[DAPropertyIds.AccessRights].Value); Console.WriteLine("propertyValueDictionary[DAPropertyId.DataType].Value: {0}", propertyValueDictionary[DAPropertyIds.DataType].Value); Console.WriteLine("propertyValueDictionary[DAPropertyId.Timestamp].Value: {0}", propertyValueDictionary[DAPropertyIds.Timestamp].Value); } } }
' This example shows how to obtain a dictionary of OPC property values for an OPC item, and extract property values. ' ' Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . ' OPC client and subscriber examples in VB.NET on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-VBNET . ' Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own ' a commercial license in order to use Online Forums, and we reply to every post. Imports OpcLabs.EasyOpc.DataAccess Imports OpcLabs.EasyOpc.DataAccess.Extensions Imports OpcLabs.EasyOpc.OperationModel Namespace DataAccess._EasyDAClientExtension Friend Class GetPropertyValueDictionary Public Shared Sub Main1() Dim client = New EasyDAClient() ' Get dictionary of property values, for all well-known properties Dim propertyValueDictionary As DAPropertyValueDictionary Try propertyValueDictionary = client.GetPropertyValueDictionary("", "OPCLabs.KitServer.2", "Simulation.Random") Catch opcException As OpcException Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message) Exit Sub End Try ' Display some of the obtained property values ' The production code should also check for the .Exception first, before getting .Value Console.WriteLine("propertyValueDictionary[DAPropertyId.AccessRights].Value: {0}", propertyValueDictionary(DAPropertyIds.AccessRights).Value) Console.WriteLine("propertyValueDictionary[DAPropertyId.DataType].Value: {0}", propertyValueDictionary(DAPropertyIds.DataType).Value) Console.WriteLine("propertyValueDictionary[DAPropertyId.Timestamp].Value: {0}", propertyValueDictionary(DAPropertyIds.Timestamp).Value) End Sub End Class End Namespace
# This example shows how to obtain a dictionary of OPC property values for an OPC item, and extract property values. # # Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html . # OPC client and subscriber examples in Python on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-Python . # Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own # a commercial license in order to use Online Forums, and we reply to every post. # The QuickOPC package is needed. Install it using "pip install opclabs_quickopc". import opclabs_quickopc # Import .NET namespaces. from OpcLabs.EasyOpc.DataAccess import * from OpcLabs.EasyOpc.DataAccess.Extensions import * from OpcLabs.EasyOpc.OperationModel import * # Instantiate the client object. client = EasyDAClient() # Get dictionary of property values, for all well-known properties. try: propertyValueDictionary = IEasyDAClientExtension2.GetPropertyValueDictionary(client, '', 'OPCLabs.KitServer.2', 'Simulation.Random') except OpcException as opcException: print('*** Failure: ' + opcException.GetBaseException().Message) exit() # Display some of the obtained property values. # The production code should also check for the .Exception first, before getting .Value print('propertyValueDictionary[DAPropertyId.AccessRights].Value: ', propertyValueDictionary.get_Item(DAPropertyId(DAPropertyIds.AccessRights)).Value, sep='') print('propertyValueDictionary[DAPropertyId.DataType].Value: ', propertyValueDictionary.get_Item(DAPropertyId(DAPropertyIds.DataType)).Value, sep='') print('propertyValueDictionary[DAPropertyId.Timestamp].Value: ', propertyValueDictionary.get_Item(DAPropertyId(DAPropertyIds.Timestamp)).Value, sep='') print('Finished.')
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