SubscribeDataSet(IEasyUASubscriber,UAPubSubResolverDescriptor,UAPubSubConnectionDescriptor,UASubscribeDataSetFilter) Method

Subscribes to a logical dataset, using a PubSub resolver descriptor, PubSub connection descriptor, and specified filter.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<ExtensionAttribute()>
Public Overloads Shared Function SubscribeDataSet( _
   ByVal subscriber As IEasyUASubscriber, _
   ByVal pubSubResolverDescriptor As UAPubSubResolverDescriptor, _
   ByVal pubSubConnectionDescriptor As UAPubSubConnectionDescriptor, _
   ByVal subscribeDataSetFilter As UASubscribeDataSetFilter _
) As Integer

'Usage
 
Dim subscriber As IEasyUASubscriber
Dim pubSubResolverDescriptor As UAPubSubResolverDescriptor
Dim pubSubConnectionDescriptor As UAPubSubConnectionDescriptor
Dim subscribeDataSetFilter As UASubscribeDataSetFilter
Dim value As Integer
 
value = IEasyUASubscriberExtension.SubscribeDataSet(subscriber, pubSubResolverDescriptor, pubSubConnectionDescriptor, subscribeDataSetFilter)

[Extension()]
public static int SubscribeDataSet( 
   IEasyUASubscriber subscriber,
   UAPubSubResolverDescriptor pubSubResolverDescriptor,
   UAPubSubConnectionDescriptor pubSubConnectionDescriptor,
   UASubscribeDataSetFilter subscribeDataSetFilter
)

[Extension()]
public:
static int SubscribeDataSet( 
   IEasyUASubscriber^ subscriber,
   UAPubSubResolverDescriptor^ pubSubResolverDescriptor,
   UAPubSubConnectionDescriptor^ pubSubConnectionDescriptor,
   UASubscribeDataSetFilter^ subscribeDataSetFilter
)

Parameters

subscriber: The subscriber object that will perform the operation.
pubSubResolverDescriptor: Describes how the PubSub logical information should be resolved to physical.
pubSubConnectionDescriptor: The PubSub connection descriptor.
subscribeDataSetFilter: Specifies how the incoming PubSub messages should be filtered before being delivered to the application.

Return Value

Returns a dataset subscription handle that can be used to change the subscription, obtain its arguments, or unsubscribe.

Exceptions

Exception Description

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.

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.

Remarks

This method operates (at least in part) asynchronously, with respect to the caller. The actual execution of the operation may be delayed, and the outcome of the operation (if any) is provided to the calling code using an event notification, callback, or other means explained in the text. In a properly written program, this method does not throw any exceptions. You should therefore not put try/catch statements or similar constructs around calls to this method. The only exceptions thrown by this method are for usage errors, i.e. when your code violates the usage contract of the method, such as passing in invalid arguments or calling the method when the state of the object does not allow it. Any operation-related errors (i.e. errors that depend on external conditions that your code cannot reliably check) are indicated by the means the operation returns its outcome (if any), which is described in the text. For more information, see Do not catch any exceptions with asynchronous or multiple-operation methods.

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

Reference

IEasyUASubscriberExtension Class
IEasyUASubscriberExtension Members
Overload List

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