'Declaration
 
Public Function New( _
   ByVal serverDescriptor As ServerDescriptor, _
   ByVal itemDescriptor As DAItemDescriptor, _
   ByVal groupParameters As DAGroupParameters, _
   ByVal callback As OpcLabs.EasyOpc.DataAccess.Generic.EasyDAItemChangedEventHandler(Of T), _
   ByVal state As Object _
)

'Usage
 
Dim serverDescriptor As ServerDescriptor
Dim itemDescriptor As DAItemDescriptor
Dim groupParameters As DAGroupParameters
Dim callback As OpcLabs.EasyOpc.DataAccess.Generic.EasyDAItemChangedEventHandler(Of T)
Dim state As Object
 
Dim instance As New EasyDAItemSubscriptionArguments(Of T)(serverDescriptor, itemDescriptor, groupParameters, callback, state)

public EasyDAItemSubscriptionArguments<T>( 
   ServerDescriptor serverDescriptor,
   DAItemDescriptor itemDescriptor,
   DAGroupParameters groupParameters,
   OpcLabs.EasyOpc.DataAccess.Generic.EasyDAItemChangedEventHandler<T> callback,
   object state
)

public:
EasyDAItemSubscriptionArguments<T>( 
   ServerDescriptor^ serverDescriptor,
   DAItemDescriptor^ itemDescriptor,
   DAGroupParameters^ groupParameters,
   OpcLabs.EasyOpc.DataAccess.Generic.EasyDAItemChangedEventHandler<T^>^ callback,
   Object^ state
)

Parameters

serverDescriptor

The OPC server involved in the operation.

itemDescriptor

The OPC item involved in the operation.

groupParameters

An object containing subscription parameters, such as the requested update rate.

callback

A typed callback method to be invoked for each significant item change.

state

The state object (can be any value supplied by your code); available in event notifications.

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows