Connectivity Software User's Guide and Reference
IsNull Property (SparkplugConnectionDescriptor)



OpcLabs.EasySparkplug Assembly > OpcLabs.EasySparkplug Namespace > SparkplugConnectionDescriptor Class : IsNull Property
Determines whether this connection descriptor is a null connection descriptor.
Syntax
'Declaration
 
Public ReadOnly Property IsNull As Boolean
'Usage
 
Dim instance As SparkplugConnectionDescriptor
Dim value As Boolean
 
value = instance.IsNull
public bool IsNull {get;}
public:
property bool IsNull {
   bool get();
}

Property Value

The default value of this property is True.

Remarks

The connection descriptor is a null connection descriptor when its BrokerDescriptor is a null broker descriptor (its SparkplugBrokerDescriptor.IsNull is true) and its ClientId is empty.

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

 

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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