QuickOPC User's Guide and Reference
DAReadItemArguments Constructor(ServerDescriptor,DAItemDescriptor,DAReadParameters,Object)



OpcLabs.EasyOpcClassic Assembly > OpcLabs.EasyOpc.DataAccess.OperationModel Namespace > DAReadItemArguments Class > DAReadItemArguments Constructor : DAReadItemArguments Constructor(ServerDescriptor,DAItemDescriptor,DAReadParameters,Object)
The OPC server involved in the operation.
The OPC item involved in the operation.
The read parameters (such as data source or value age).
The state object (can be any value supplied by your code); available in event notifications.
Initializes a new instance of the class. Initializes a new instance of the class, with the specified OPC server and item descriptors, a read parameters, and a user-defined state object.
Syntax
'Declaration
 
Public Function New( _
   ByVal serverDescriptor As ServerDescriptor, _
   ByVal itemDescriptor As DAItemDescriptor, _
   ByVal readParameters As DAReadParameters, _
   ByVal state As Object _
)
'Usage
 
Dim serverDescriptor As ServerDescriptor
Dim itemDescriptor As DAItemDescriptor
Dim readParameters As DAReadParameters
Dim state As Object
 
Dim instance As New DAReadItemArguments(serverDescriptor, itemDescriptor, readParameters, state)

Parameters

serverDescriptor
The OPC server involved in the operation.
itemDescriptor
The OPC item involved in the operation.
readParameters
The read parameters (such as data source or value age).
state
The state object (can be any value supplied by your code); available in event notifications.
Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2012, Windows Server 2016; .NET Core, .NET 5, .NET 6: Linux, macOS, Microsoft Windows

See Also

Reference

DAReadItemArguments Class
DAReadItemArguments Members
Overload List