OPC Studio User's Guide and Reference
Implicit Type Conversion(DAPropertyDescriptor,DAPropertyId) Operator



OpcLabs.EasyOpcClassicCore Assembly > OpcLabs.EasyOpc.DataAccess Namespace > DAPropertyDescriptor Class > Implicit Type Conversion Operator : Implicit Type Conversion(DAPropertyDescriptor,DAPropertyId) Operator
Contains OPC property identifier.

Because the DAPropertyId has an implicit conversion from System.Int64 and 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 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.DAPropertyId Constructor(Int64) or DAPropertyId.DAPropertyId Constructor(DAPropertyIds) constructor instead.

The value of this parameter can be null (Nothing in Visual Basic).

Converts a property Id to a DAPropertyDescriptor object.
Syntax
'Declaration
 
<CanBeNullAttribute()>
Overloads Public Operator Widening CType( _
   ByVal propertyId As DAPropertyId _
) As DAPropertyDescriptor
'Usage
 
[CanBeNull()]
public DAPropertyDescriptor operator implicit( 
   DAPropertyId propertyId
)
[CanBeNull()]
public:
operator DAPropertyDescriptor^ ( 
   DAPropertyId^ propertyId
)

Parameters

propertyId
Contains OPC property identifier.

Because the DAPropertyId has an implicit conversion from System.Int64 and 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 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.DAPropertyId Constructor(Int64) or DAPropertyId.DAPropertyId Constructor(DAPropertyIds) constructor instead.

The value of this parameter can be null (Nothing in Visual Basic).

Return Value

Returns a DAPropertyDescriptor converted from the input argument.

This method can return null (Nothing in Visual Basic).

Remarks

This operator is equivalent to FromDAPropertyId.

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