OPC Studio User's Guide and Reference
DAItemDescriptor Class Properties


OpcLabs.EasyOpcClassicCore Assembly > OpcLabs.EasyOpc.DataAccess Namespace : DAItemDescriptor Class

For a list of all members of this type, see DAItemDescriptor members.

Public Properties
 NameDescription
Public PropertySpecifies the access path for the OPC item. The default is "" (an empty string).  
Public PropertyWhen non-empty, specifies the name of the alias that will be used in place of this object. (Inherited from OpcLabs.EasyOpc.NodeDescriptor)
Public PropertyThe node descriptor in form of an argument string, i.e. a key=value pairs separated by semicolons. (Inherited from OpcLabs.EasyOpc.NodeDescriptor)
Public PropertySpecifies the browse path for the OPC node. (Inherited from OpcLabs.EasyOpc.NodeDescriptor)
Public PropertyThe starting node descriptor of the browse path. (Inherited from OpcLabs.EasyOpc.DataAccess.DANodeDescriptor)
Public PropertyDetermines whether there is a non-null browse path in the descriptor. (Inherited from OpcLabs.EasyOpc.NodeDescriptor)
Public PropertyDetermines whether there is a non-null node ID in the descriptor. (Inherited from OpcLabs.EasyOpc.NodeDescriptor)
Public PropertyDetermines whether this object is aliased. (Inherited from OpcLabs.EasyOpc.NodeDescriptor)
Public PropertyDetermines whether the node descriptor is null, i.e. specifies neither node ID nor a browse path. (Inherited from OpcLabs.EasyOpc.NodeDescriptor)
Public PropertyDetermines whether this object describes a root of the address space. (Inherited from OpcLabs.EasyOpc.NodeDescriptor)
Public PropertyContains OPC item identifier (empty string for the root, null reference if unknown). (Inherited from OpcLabs.EasyOpc.DataAccess.DANodeDescriptor)
Public PropertyContains node identifier (empty string for the root, null reference if unknown). (Inherited from OpcLabs.EasyOpc.NodeDescriptor)
Public PropertyContains node path (empty string for the root, null reference if unknown). Only used with OPC XML. (Inherited from OpcLabs.EasyOpc.NodeDescriptor)
Public Propertystatic (Shared in Visual Basic)A null item descriptor (contains a null node ID and a null browse path).  
Public PropertySpecifies the data type requested. Setting this property to OpcLabs.BaseLib.ComInterop.VarTypes.Empty means that the server's canonical data type should be used.  
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See Also

Reference

DAItemDescriptor Class
OpcLabs.EasyOpc.DataAccess Namespace