Reads values of multiple attributes. Reads values of multiple attributes of the same node, using array of attribute IDs as an input.
Syntax
Parameters
- client
- The client object that will perform the operation.
- endpointDescriptor
- Endpoint descriptor. Identifies the OPC-UA server.
- nodeDescriptor
- Node descriptor. Identifies the node in OPC server's address space.
- attributeIdArray
- Array of UAAttributeId. Array of attribute IDs specifying what to read from an OPC-UA server.
Return Value
Array of
OpcLabs.BaseLib.OperationModel.ValueResult. Returns an array of value objects. Each object contains the actual value of an attribute. The indices of elements in the output array are the same as those in the input array, .
Exceptions
Exception | Description |
System.ArgumentNullException |
A null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.
This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception. |
Requirements
Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows
See Also