OPCDA.NET-UA
Read(Int32[],Int32,Int32,Int32[]) Method
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OpcDaNetUaOption.Net4 Assembly > UA_Wrapper Namespace > Group Class > Read Method : Read(Int32[],Int32,Int32,Int32[]) Method

aSrvHnd
Array of server item handles of the items to be read
transactionID
The Client generated transaction ID. This is included in the 'completion' information provided to the OnReadComplete.
cancelId
errors

Glossary Item Box

Asynchronously read one or more items in a group. The results are returned via the client's

Syntax

Visual Basic (Declaration) 
Public Overloads Function Read( _
   ByVal aSrvHnd() As Integer, _
   ByVal transactionID As Integer, _
   ByRef cancelId As Integer, _
   ByRef errors As Integer() _
) As Integer
C# 
public int Read( 
   int[] aSrvHnd,
   int transactionID,
   out int cancelId,
   out int[] errors
)

Parameters

aSrvHnd
Array of server item handles of the items to be read
transactionID
The Client generated transaction ID. This is included in the 'completion' information provided to the OnReadComplete.
cancelId
errors

Return Value

HRESULT success/error code

Requirements

Target Platforms: Windows 7/8/10, Windows Server 2008/2012/2016, .NET 4.7.2

See Also

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