OPC Studio User's Guide and Reference
Less Than Operator (UANodeId)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.AddressSpace Namespace > UANodeId Class : Less Than Operator
First object to be compared.

Because the UANodeId has an implicit conversion from System.String, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a string (representing the expanded text of the nodeId) in place of this parameter, and the corresponding OPC UA node Id will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the UANodeId Constructor(String) constructor instead.

The value of this parameter can be null (Nothing in Visual Basic).

Second object to be compared.

Because the UANodeId has an implicit conversion from System.String, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a string (representing the expanded text of the nodeId) in place of this parameter, and the corresponding OPC UA node Id will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the UANodeId Constructor(String) constructor instead.

The value of this parameter can be null (Nothing in Visual Basic).

Determines whether one node Id should be considered less than the second node Id for ordering purposes.
Syntax
'Declaration
 
Public Operator <( _
   ByVal value1 As UANodeId, _
   ByVal value2 As UANodeId _
) As Boolean
'Usage
 
public bool operator <( 
   UANodeId value1,
   UANodeId value2
)
public:
bool operator <( 
   UANodeId^ value1,
   UANodeId^ value2
)

Parameters

value1
First object to be compared.

Because the UANodeId has an implicit conversion from System.String, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a string (representing the expanded text of the nodeId) in place of this parameter, and the corresponding OPC UA node Id will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the UANodeId Constructor(String) constructor instead.

The value of this parameter can be null (Nothing in Visual Basic).

value2
Second object to be compared.

Because the UANodeId has an implicit conversion from System.String, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a string (representing the expanded text of the nodeId) in place of this parameter, and the corresponding OPC UA node Id will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the UANodeId Constructor(String) constructor instead.

The value of this parameter can be null (Nothing in Visual Basic).

Return Value

True if the first value is less than the second value; false otherwise.
Remarks

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

OPC UA node Id, represented by the UANodeId class, directly identifies a node in a server's address space.

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

Reference

UANodeId Class
UANodeId Members
OPC UA Node IDs
Namespace indices in OPC UA Node Ids