OPC Studio User's Guide and Reference
ReadMultiple Method (IEasyUAClientExtension)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA Namespace > IEasyUAClientExtension Class : ReadMultiple Method
Reads values of multiple attributes.
Overload List
OverloadDescription
Reads values of multiple attributes. Reads multiple attributes of the same node, using array of attribute IDs as an input.  
Reads values of multiple attributes. Reads values of the Value attribute of multiple nodes, using array of node descriptors as an input.  
Remarks

 

This is a multiple-operation method. In a properly written program, it does not throw any exceptions. You should therefore not put try/catch statements or similar constructs around calls to this method. The only exceptions thrown by this method are for usage errors, i.e. when your code violates the usage contract of the method, such as passing in invalid arguments or calling the method when the state of the object does not allow it. Any operation-related errors (i.e. errors that depend on external conditions that your code cannot reliably check) are indicated in the result objects returned by the method. For more information, see Multiple-operation Methods and Do not catch any exceptions with asynchronous or multiple-operation methods.
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