OPCDA.NET Reference Manual
Write Method
See Also Send Feedback

OpcDaNetUA.Net4 Assembly > OPCDA.NET.Controls Namespace > DAGroup Class : Write Method

Visual Basic (Declaration)
C#

values: Array of item identifiers. ItemDefinitionSets defined in the Visual Studio Designer can be used as the as the argument. Only the value to be written needs to be modified in the DAItemValue objects.

tag: This object is passed to the competion handler and allows the user to pass any information that may be needed in the completion handler. Nothing (null) can be specified if the application does not require to pass any information.

onCompleted: Competion notification handler. void xxx(BGException ex, DAItemValue[] rslt, object tag){}

Available in the OPCDA.NET Professional Edition only.
Write a set of items by executing an asynchronous write call in a background thread of the BGGroup class. The call returns immediately after the request is queued. The success of the write call is reported in the completion event handler arguments. Complete failure is indicated in the exception argument. Error writing certain items are reported in the Error field of the rslt object.

Syntax

Visual Basic (Declaration)
Public Sub Write( _ ByVal values() As DAItemValue, _ ByVal tag As Object, _ ByVal onCompleted As DAWriteComplete _ )

Visual Basic (Declaration)

Public Sub Write( _
   ByVal values() As DAItemValue, _
   ByVal tag As Object, _
   ByVal onCompleted As DAWriteComplete _
)

C#
public void Write( DAItemValue[] values, object tag, DAWriteComplete onCompleted )

Parameters

values: Array of item identifiers. ItemDefinitionSets defined in the Visual Studio Designer can be used as the as the argument. Only the value to be written needs to be modified in the DAItemValue objects.
tag: This object is passed to the competion handler and allows the user to pass any information that may be needed in the completion handler. Nothing (null) can be specified if the application does not require to pass any information.
onCompleted: Competion notification handler. void xxx(BGException ex, DAItemValue[] rslt, object tag){}

Requirements

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

Syntax

Parameters

Requirements

See Also

Reference