Initializes a new instance of the class. Initializes a new instance of the class, with the OPC server specified by machine name and server class, the OPC item specified by its ItemId and data type, and with the data value.
Syntax
'Declaration
Public Function New( _
ByVal As String, _
ByVal As String, _
ByVal As String, _
ByVal As Object _
)
'Usage
Dim machineName As String
Dim serverClass As String
Dim itemId As String
Dim value As Object
Dim instance As New DAItemValueArguments(machineName, serverClass, itemId, value)
public DAItemValueArguments(
string ,
string ,
string ,
object
)
public:
DAItemValueArguments(
String^ ,
String^ ,
String^ ,
Object^
)
Parameters
- machineName
- Name of the machine. Determines the computer on which the OPC server is located. May be an empty string, in which case the OPC server is assumed to exist on the local computer or at the computer specified for it by DCOM configuration.
- serverClass
- Contains ProgID of the OPC server.
- itemId
- Contains OPC item identifier.
- value
- The value to be written.
Exceptions
| Exception | Description |
|---|
| System.ArgumentException |
One of the arguments provided to a method is not valid.
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. |
| System.ArgumentNullException |
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. |
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
