OPC Studio User's Guide and Reference
Write(IEnumerable<IDAClientMapping>) Method



OpcLabs.EasyOpcClassic Assembly > OpcLabs.EasyOpc.DataAccess.LiveMapping Namespace > DAClientMapper Class > Write Method : Write(IEnumerable<IDAClientMapping>) Method
The mappings to be operated upon.

The value of this parameter cannot be null (Nothing in Visual Basic).

Executes the "Write" operation on given mappings.
Syntax
'Declaration
 
Public Overloads Sub Write( _
   ByVal mappings As IEnumerable(Of IDAClientMapping) _
) 
'Usage
 
Dim instance As DAClientMapper
Dim mappings As IEnumerable(Of IDAClientMapping)
 
instance.Write(mappings)

Parameters

mappings
The mappings to be operated upon.

The value of this parameter cannot be null (Nothing in Visual Basic).

Exceptions
ExceptionDescription

A null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

The component is not licensed for the operation requested.
Remarks
The "Write" operation writes a value from the mapping source into an OPC item. Only mappings of type DAClientItemMapping that include DAItemMappingOperations.Write in their DAClientItemMapping.Operations are affected; other mappings are ignored.
Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

See Also