OPC Studio User's Guide and Reference
IsValid Property (_UnionData)



OpcLabs.BaseLib Assembly > OpcLabs.BaseLib.DataTypeModel.ComTypes Namespace > _UnionData Interface : IsValid Property
Indicates whether the current data is valid. The associated data type, if present, is used for validation.
Syntax
'Declaration
 
ReadOnly Property IsValid As Boolean
'Usage
 
Dim instance As _UnionData
Dim value As Boolean
 
value = instance.IsValid
bool IsValid {get;}
property bool IsValid {
   bool get();
}

Property Value

The default value of this property is True.

Remarks

The getter method of this property is pure, i.e. it does not have observable side effects.

This member or type is for use from COM. It is not meant to be used from .NET or Python. Refer to the corresponding .NET member or type instead, if you are developing in .NET or Python.

This method or property does not throw any exceptions, aside from execution exceptions such as System.Threading.ThreadAbortException or System.OutOfMemoryException.

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