WriteItemValue(IEasyDAClient,DAItemValueArguments) Method

Writes a value into a named item in an OPC server. Only the item value is written (quality and timestamp are not written). Writes a value into a named item using an object that holds all necessary arguments.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<ExtensionAttribute()>
Public Overloads Shared Sub WriteItemValue( _
   ByVal client As IEasyDAClient, _
   ByVal itemValueArguments As DAItemValueArguments _
)

'Usage
 
Dim client As IEasyDAClient
Dim itemValueArguments As DAItemValueArguments
 
IEasyDAClientExtension.WriteItemValue(client, itemValueArguments)

[Extension()]
public static void WriteItemValue( 
   IEasyDAClient client,
   DAItemValueArguments itemValueArguments
)

[Extension()]
public:
static void WriteItemValue( 
   IEasyDAClient^ client,
   DAItemValueArguments^ itemValueArguments
)

Parameters

client: The client object that will perform the operation.
itemValueArguments: Arguments specifying what and how to write.

Exceptions

Exception	Description
OpcLabs.EasyOpc.OperationModel.OpcException	Thrown when the OPC operation fails.
System.ArgumentNullException	A `null` reference (`Nothing` in Visual Basic) is passed to a method that does not accept it as a valid argument.

Remarks

The server can be local or can be remotely accessed via DCOM. Optionally, an access path can be specified or a specific data type can be requested.

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

IEasyDAClientExtension Class
IEasyDAClientExtension Members
Overload List