OPC Studio User's Guide and Reference
DAReadItemArguments Constructor(ServerDescriptor,DAItemDescriptor)



OpcLabs.EasyOpcClassicCore Assembly > OpcLabs.EasyOpc.DataAccess.OperationModel Namespace > DAReadItemArguments Class > DAReadItemArguments Constructor : DAReadItemArguments Constructor(ServerDescriptor,DAItemDescriptor)
The OPC server involved in the operation.
The OPC item involved in the operation.
Initializes a new instance of the class. Initializes a new instance of the class, with the specified OPC server and item descriptors, and default read parameters.
Syntax
'Declaration
 
Public Function New( _
   ByVal serverDescriptor As ServerDescriptor, _
   ByVal itemDescriptor As DAItemDescriptor _
)
'Usage
 
Dim serverDescriptor As ServerDescriptor
Dim itemDescriptor As DAItemDescriptor
 
Dim instance As New DAReadItemArguments(serverDescriptor, itemDescriptor)

Parameters

serverDescriptor
The OPC server involved in the operation.
itemDescriptor
The OPC item involved in the operation.
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.

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