PullMultipleItemChanges Method (IEasyDAClient)

Attempts to pull multiple OPC item changes subscribed to by the SubscribeMultipleItems or SubscribeItem method.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<CanBeNullAttribute()>
<EditorBrowsableAttribute(EditorBrowsableState.Advanced)>
<ElementsNotNullAttribute()>
Function PullMultipleItemChanges( _
   ByVal maximumCount As Integer, _
   ByVal millisecondsTimeout As Integer _
) As EasyDAItemChangedEventArgs()

'Usage
 
Dim instance As IEasyDAClient
Dim maximumCount As Integer
Dim millisecondsTimeout As Integer
Dim value() As EasyDAItemChangedEventArgs
 
value = instance.PullMultipleItemChanges(maximumCount, millisecondsTimeout)

[CanBeNull()]
[EditorBrowsable(EditorBrowsableState.Advanced)]
[ElementsNotNull()]
EasyDAItemChangedEventArgs[] PullMultipleItemChanges( 
   int maximumCount,
   int millisecondsTimeout
)

[CanBeNull()]
[EditorBrowsable(EditorBrowsableState.Advanced)]
[ElementsNotNull()]
array<EasyDAItemChangedEventArgs^>^ PullMultipleItemChanges( 
   int maximumCount,
   int millisecondsTimeout
)

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.

Exceptions

Exception	Description
System.ArgumentException	One of the arguments provided to a method is not valid.
System.ArgumentOutOfRangeException	The value of an argument is outside the allowable range of values as defined by the invoked method.

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

Reference

IEasyDAClient Interface
IEasyDAClient Members