'Declaration<CanBeNullAttribute()> Property StartingNodeDescriptor As UANodeDescriptor
'UsageDim instance As _UABrowsePath Dim value As UANodeDescriptor instance.StartingNodeDescriptor = value value = instance.StartingNodeDescriptor
[CanBeNull()] UANodeDescriptor StartingNodeDescriptor {get; set;}
[CanBeNull()] property UANodeDescriptor^ StartingNodeDescriptor { UANodeDescriptor^ get(); void set ( UANodeDescriptor^ value); }
For most usages, it would be sufficient to determine the starting node by the StartingNodeId. The OpcLabs.EasyOpc.UA.UANodeDescriptor and its ability to use yet another browse path in determining the starting node of the browse path is, however, necessary for features required from object aliasing, namely the ability to "nest" the aliases that provide the "root" for OPC UA mapping.
As opposed to many other places, here the absence of a starting node is indicated by a null reference, and not a OpcLabs.EasyOpc.UA.UANodeDescriptor.Null value. This is necessary in order to avoid a reference cycle with a Null browse path.
This method or property does not throw any exceptions, aside from execution exceptions such as System.Threading.ThreadAbortException or System.OutOfMemoryException.