'Declaration
Public Function HasProperty( _ ByVal propertyId As DAPropertyId _ ) As Boolean
'Usage
Dim instance As DAItemPropertyRecord Dim propertyId As DAPropertyId Dim value As Boolean value = instance.HasProperty(propertyId)
public bool HasProperty( DAPropertyId propertyId )
public: bool HasProperty( DAPropertyId^ propertyId )
Parameters
- propertyId
- The Id of OPC property to be queried.
Because the OpcLabs.EasyOpc.DataAccess.DAPropertyId has an implicit conversion from System.Int64 and OpcLabs.EasyOpc.DataAccess.DAPropertyIds, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a long integer (representing the numerical value of the access rights), or an element of the OpcLabs.EasyOpc.DataAccess.DAPropertyIds enumeration in place of this parameter, and the corresponding Property Id specification will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the DAPropertyId Constructor(Int64) or DAPropertyId Constructor(DAPropertyIds) constructor instead.
The value of this parameter cannot be
null
(Nothing
in Visual Basic).