QuickOPC User's Guide and Reference
WriteItemValue<TValue>(IEasyDAClient,ServerDescriptor,DANodeDescriptor,TValue) Method



OpcLabs.EasyOpcClassic Assembly > OpcLabs.EasyOpc.DataAccess.Extensions Namespace > IEasyDAClientExtension2 Class > WriteItemValue Method : WriteItemValue<TValue>(IEasyDAClient,ServerDescriptor,DANodeDescriptor,TValue) Method
The type of item value.
The client object that will perform the operation.
The OPC server involved in the operation.
The OPC item involved in the operation.
The typed value to be written.
Writes a typed value into a (typed) named item in an OPC server. Only the item's typed value is written (quality and timestamp are not written). Writes a typed value into a named item using descriptor objects for the OPC server and OPC-DA item.
Syntax
'Declaration
 

<ExtensionAttribute()>
Public Overloads Shared Sub WriteItemValue(Of TValue)( _
   ByVal client As IEasyDAClient, _
   ByVal serverDescriptor As ServerDescriptor, _
   ByVal nodeDescriptor As DANodeDescriptor, _
   ByVal value As TValue _
) 
'Usage
 

Dim client As IEasyDAClient
Dim serverDescriptor As ServerDescriptor
Dim nodeDescriptor As DANodeDescriptor
Dim value As TValue
 
IEasyDAClientExtension2.WriteItemValue(Of TValue)(client, serverDescriptor, nodeDescriptor, value)
[Extension()]
public static void WriteItemValue<TValue>( 
   IEasyDAClient client,
   ServerDescriptor serverDescriptor,
   DANodeDescriptor nodeDescriptor,
   TValue value
)
[Extension()]
public:
static void WriteItemValuegeneric<typename TValue>
( 
   IEasyDAClient^ client,
   ServerDescriptor^ serverDescriptor,
   DANodeDescriptor^ nodeDescriptor,
   TValue^ value
)

Parameters

client
The client object that will perform the operation.
serverDescriptor
The OPC server involved in the operation.
nodeDescriptor
The OPC item involved in the operation.
value
The typed value to be written.

Type Parameters

TValue
The type of item value.
Exceptions
ExceptionDescription
OpcLabs.EasyOpc.OperationModel.OpcExceptionThrown when the OPC operation fails.
System.ArgumentNullExceptionA 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

See Also

Reference

IEasyDAClientExtension2 Class
IEasyDAClientExtension2 Members
Overload List

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