OPCDA.NET Reference Manual
Subscribe(String,Object,Int32,DataBindFormat) Method
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OpcDaNetUA.Net4 Assembly > OPCDA.NET Namespace > OpcDataBind Class > Subscribe Method : Subscribe(String,Object,Int32,DataBindFormat) Method

Visual Basic (Declaration)
C#

itemID: Fully qualified item ID

updControl: Windows control object or callback handler

index: Item index in the Windows control

fmt: Object with format information

Create a subscription for one item. The item is added to the refresh group and the internal callback handler will write new values to the specified control at the specified index. The value is formatted according the format definition object.

Syntax

Visual Basic (Declaration)
Public Overloads Function Subscribe( _ ByVal itemID As String, _ ByVal updControl As Object, _ ByVal index As Integer, _ ByVal fmt As DataBindFormat _ ) As Subscription

Visual Basic (Declaration)

Public Overloads Function Subscribe( _
   ByVal itemID As String, _
   ByVal updControl As Object, _
   ByVal index As Integer, _
   ByVal fmt As DataBindFormat _
) As Subscription

C#
public Subscription Subscribe( string itemID, object updControl, int index, DataBindFormat fmt )

public Subscription Subscribe( 
   string itemID,
   object updControl,
   int index,
   DataBindFormat fmt
)

Parameters

itemID: Fully qualified item ID
updControl: Windows control object or callback handler
index: Item index in the Windows control
fmt: Object with format information

Return Value

Subscription object or null on error

Requirements

Target Platforms: Windows 7/8/10, Windows Server 2003/2008/2012/2016, .NET 4.x

Syntax

Parameters

Return Value

Requirements

See Also

Reference