QuickOPC User's Guide and Reference
DAItemDescriptor Constructor(String,VarType,String)



OpcLabs.EasyOpcClassic Assembly > OpcLabs.EasyOpc.DataAccess Namespace > DAItemDescriptor Class > DAItemDescriptor Constructor : DAItemDescriptor Constructor(String,VarType,String)
Contains OPC item identifier.
Specifies the data type requested. Passing OpcLabs.BaseLib.ComInterop.VarTypes.Empty means that the server's canonical data type should be used.
An optional data path suggestion to the server.
Initializes a new instance of the DAItemDescriptor class.Initializes a new instance of the class, with specified item identifier, data type and access path.
Syntax
'Declaration
 
Public Function New( _
   ByVal itemId As String, _
   ByVal requestedDataType As VarType, _
   ByVal accessPath As String _
)
'Usage
 
Dim itemId As String
Dim requestedDataType As VarType
Dim accessPath As String
 
Dim instance As New DAItemDescriptor(itemId, requestedDataType, accessPath)
public DAItemDescriptor( 
   string itemId,
   VarType requestedDataType,
   string accessPath
)
public:
DAItemDescriptor( 
   String^ itemId,
   VarType^ requestedDataType,
   String^ accessPath
)

Parameters

itemId
Contains OPC item identifier.
requestedDataType
Specifies the data type requested. Passing OpcLabs.BaseLib.ComInterop.VarTypes.Empty means that the server's canonical data type should be used.
accessPath
An optional data path suggestion to the server.
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

DAItemDescriptor Class
DAItemDescriptor Members
Overload List