OPC Studio User's Guide and Reference
AsUnionDataType Method (_EnumerationDataType)



OpcLabs.BaseLib Assembly > OpcLabs.BaseLib.DataTypeModel.ComTypes Namespace > _EnumerationDataType Interface : AsUnionDataType Method
The current data type expressed as union data type.
Syntax
'Declaration
 
<CanBeNullAttribute()>
Function AsUnionDataType() As UnionDataType
'Usage
 
Dim instance As _EnumerationDataType
Dim value As UnionDataType
 
value = instance.AsUnionDataType()
[CanBeNull()]
UnionDataType AsUnionDataType()
[CanBeNull()]
UnionDataType^ AsUnionDataType(); 
Remarks

Returns null if the current data type is not a union data type.

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

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