OPC Studio User's Guide and Reference
Respond Method (IEasyUAAlarmsAndConditionsClient)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.AlarmsAndConditions Namespace > IEasyUAAlarmsAndConditionsClient Interface : Respond Method
Endpoint descriptor. Identifies the OPC-UA server.
Node descriptor. Identifies the node in OPC server's address space.
Selected index of the ResponseOptionSet array.
Respond is used to pass the selected response option and end the dialog. DialogState/Id will return to FALSE.
Syntax
'Declaration
 
Sub Respond( _
   ByVal endpointDescriptor As UAEndpointDescriptor, _
   ByVal objectNodeDescriptor As UANodeDescriptor, _
   ByVal selectedResponse As Integer _
) 
'Usage
 
Dim instance As IEasyUAAlarmsAndConditionsClient
Dim endpointDescriptor As UAEndpointDescriptor
Dim objectNodeDescriptor As UANodeDescriptor
Dim selectedResponse As Integer
 
instance.Respond(endpointDescriptor, objectNodeDescriptor, selectedResponse)

Parameters

endpointDescriptor
Endpoint descriptor. Identifies the OPC-UA server.
objectNodeDescriptor
Node descriptor. Identifies the node in OPC server's address space.
selectedResponse
Selected index of the ResponseOptionSet array.
Exceptions
ExceptionDescription

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.

The OPC UA operation has failed. This operation exception in uniformly used to allow common handling of various kinds of errors. The System.Exception.InnerException always contains information about the actual error cause.

This is an operation error that depends on factors external to your program, and thus cannot be always avoided. Your code must handle it appropriately.

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