OPC Studio User's Guide and Reference
Cookie Property (_AEEventData)



OpcLabs.EasyOpcClassicCore Assembly > OpcLabs.EasyOpc.AlarmsAndEvents.ComTypes Namespace > _AEEventData Interface : Cookie Property
Server defined cookie associated with the event notification.
Syntax
'Declaration
 
<ValueLimitsAttribute(0, 4294967295)>
Property Cookie As Integer
'Usage
 
Dim instance As _AEEventData
Dim value As Integer
 
instance.Cookie = value
 
value = instance.Cookie
[ValueLimits(0, 4294967295)]
int Cookie {get; set;}
[ValueLimits(0, 4294967295)]
property int Cookie {
   int get();
   void set (    int value);
}

Property Value

The default value of this property is 0.

Exceptions
ExceptionDescription

The value of an argument is outside the allowable range of values as defined by the invoked method.

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.

Remarks

This property is used only for Condition-Related Events (see EventType).

The cookie is used by the client when acknowledging the condition. This value is opaque to the client.

This member or type is for use from COM. It is not meant to be used from .NET or Python. Refer to the corresponding .NET member or type instead, if you are developing in .NET or Python.

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