Attempts to pull multiple OPC event notifications subscribed to by the
SubscribeMultipleMonitoredItems or SubscribeEvent method.
Syntax
Parameters
- maximumCount
- Maximum number of event notifications returned.
- millisecondsTimeout
- The number of milliseconds to wait, or System.Threading.Timeout.Infinite (-1) to wait indefinitely.
Return Value
An array of event arguments, or
null
if no event is available within the specified time.
This method can return null
(Nothing
in Visual Basic).
The individual elements of the returned value are never null
(Nothing
in Visual Basic).
Exceptions
Exception | Description |
System.ArgumentOutOfRangeException |
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. |
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