QuickOPC User's Guide and Reference
UnsubscribeMultipleEvents Method



OpcLabs.EasyOpcClassic Assembly > OpcLabs.EasyOpc.AlarmsAndEvents.Extensions Namespace > IEasyAEClientExtension2 Class : UnsubscribeMultipleEvents Method
The client object that will perform the operation.
Subscription handles. Can be an array.

Unsubscribe from changes of multiple OPC events.

Unsubscribe from changes of multiple OPC events, specifying array of integer handles.

Syntax
'Declaration
 
<ExtensionAttribute()>
Public Shared Sub UnsubscribeMultipleEvents( _
   ByVal client As IEasyAEClient, _
   ByVal handles As IEnumerable(Of Integer) _
) 
'Usage
 
Dim client As IEasyAEClient
Dim handles As IEnumerable(Of Integer)
 
IEasyAEClientExtension2.UnsubscribeMultipleEvents(client, handles)
[Extension()]
public static void UnsubscribeMultipleEvents( 
   IEasyAEClient client,
   IEnumerable<int> handles
)
[Extension()]
public:
static void UnsubscribeMultipleEvents( 
   IEasyAEClient^ client,
   IEnumerable<int>^ handles
) 

Parameters

client
The client object that will perform the operation.
handles
Subscription handles. Can be an array.
Exceptions
ExceptionDescription
One of the arguments provided to a method is not valid.
A null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.
Remarks

The event subscription handles become invalid after this method is called.

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

IEasyAEClientExtension2 Class
IEasyAEClientExtension2 Members