QuickOPC User's Guide and Reference
AEEventsSubscriptionArguments Constructor(String,String,Int32,Object,AESubscriptionFilter)



OpcLabs.EasyOpcClassicCore Assembly > OpcLabs.EasyOpc.AlarmsAndEvents.OperationModel Namespace > AEEventsSubscriptionArguments Class > AEEventsSubscriptionArguments Constructor : AEEventsSubscriptionArguments Constructor(String,String,Int32,Object,AESubscriptionFilter)
Name of the machine. Determines the computer on which the OPC server is located. May be an empty string, in which case the OPC server is assumed to exist on the local computer or at the computer specified for it by DCOM configuration.
Contains ProgID of the OPC server.
The requested notification rate. The notification rate is in milliseconds and tells the server how often to send event notifications. This is a minimum time - do not send event notifications any faster that this UNLESS the buffer size is reached. A value of 0 for notification rate means that the server should send event notifications as soon as it gets them. This parameter is used to improve communications efficiency between client and server. This parameter is a recommendation from the client, and the server is allowed to ignore the parameter.
The state object (can be any value supplied by your code); available in event notifications.
An OpcLabs.EasyOpc.AlarmsAndEvents.AESubscriptionFilter that determines the filtering criteria to be used for the event subscription.
Initializes a new instance of the class.
Syntax
'Declaration
 
Public Function New( _
   ByVal machineName As String, _
   ByVal serverClass As String, _
   ByVal notificationRate As Integer, _
   ByVal state As Object, _
   ByVal filter As AESubscriptionFilter _
)
'Usage
 
Dim machineName As String
Dim serverClass As String
Dim notificationRate As Integer
Dim state As Object
Dim filter As AESubscriptionFilter
 
Dim instance As New AEEventsSubscriptionArguments(machineName, serverClass, notificationRate, state, filter)

Parameters

machineName
Name of the machine. Determines the computer on which the OPC server is located. May be an empty string, in which case the OPC server is assumed to exist on the local computer or at the computer specified for it by DCOM configuration.
serverClass
Contains ProgID of the OPC server.
notificationRate
The requested notification rate. The notification rate is in milliseconds and tells the server how often to send event notifications. This is a minimum time - do not send event notifications any faster that this UNLESS the buffer size is reached. A value of 0 for notification rate means that the server should send event notifications as soon as it gets them. This parameter is used to improve communications efficiency between client and server. This parameter is a recommendation from the client, and the server is allowed to ignore the parameter.
state
The state object (can be any value supplied by your code); available in event notifications.
filter
An OpcLabs.EasyOpc.AlarmsAndEvents.AESubscriptionFilter that determines the filtering criteria to be used for the event subscription.
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