OPC Studio User's Guide and Reference
AsUnionData Method (GenericDataExtension)



OpcLabs.BaseLib Assembly > OpcLabs.BaseLib.DataTypeModel.Extensions Namespace > GenericDataExtension Class : AsUnionData Method
The current generic data expressed as data of union data type.
Syntax
'Declaration
 
<ExtensionAttribute()>
<CanBeNullAttribute()>
Public Shared Function AsUnionData( _
   ByVal genericData As GenericData _
) As UnionData
'Usage
 
Dim genericData As GenericData
Dim value As UnionData
 
value = GenericDataExtension.AsUnionData(genericData)
[Extension()]
[CanBeNull()]
public static UnionData AsUnionData( 
   GenericData genericData
)
[Extension()]
[CanBeNull()]
public:
static UnionData^ AsUnionData( 
   GenericData^ genericData
) 

Parameters

genericData
Remarks

Returns null if the current generic data is not of union data type.

This method has been introduced primarily for languages like PHP that do not allow down-casting.

Classes derived from OpcLabs.BaseLib.DataTypeModel.GenericData form following class hierarchy:

.

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