Subscribes to a single dataset field from a dataset, using a PubSub connection descriptor, specified filter, a field name, and a callback.
Syntax
Parameters
- subscriber
- The subscriber object that will perform the operation.
- pubSubConnectionDescriptor
- The PubSub connection descriptor.
- subscribeDataSetFilter
- Specifies how the incoming PubSub messages should be filtered before being delivered to the application.
- dataSetFieldDescriptor
- The descriptor for the dataset field.
- callback
- A callback method to be invoked for each time a dataset field is received.
Return Value
Returns a dataset field subscription handle that can be used to change the subscription, obtain its arguments, or unsubscribe.
Exceptions
Exception | Description |
System.ArgumentNullException |
A null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.
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