Namespace: Opc.UaFx
Assemblies: Opc.UaFx.Advanced.dll, Opc.UaFx.Advanced.dll
The OpcDataVariableNode<T> type exposes the following members.
Initializes a new instance of the OpcDataVariableNode´1 class accessible by the name
specified as a child node of the parent
node given.
C#
public OpcDataVariableNode(IOpcNode parent, OpcName name)
Parameters
parent
IOpcNode
The IOpcNode used as the parent node or a null reference (Nothing in Visual Basic) in the case there is no parent node available.
name
OpcName
The OpcName through that the new data variable node can be accessed.
Initializes a new instance of the OpcDataVariableNode´1 class accessible by the name
and id
specified as a child node of the parent
node given.
C#
public OpcDataVariableNode(IOpcNode parent, OpcName name, OpcNodeId id)
Parameters
parent
IOpcNode
The IOpcNode used as the parent node or a null reference (Nothing in Visual Basic) in the case there is no parent node available.
name
OpcName
The OpcName through that the new data variable node can be accessed.
id
OpcNodeId
The OpcNodeId through that the new data variable node can be identified and accessed.
Initializes a new instance of the OpcDataVariableNode´1 class accessible by the name
and id
specified with the initial value defined by value
as a child node of the parent
node given.
C#
public OpcDataVariableNode(IOpcNode parent, OpcName name, OpcNodeId id, T value)
Parameters
parent
IOpcNode
The IOpcNode used as the parent node or a null reference (Nothing in Visual Basic) in the case there is no parent node available.
name
OpcName
The OpcName through that the new data variable node can be accessed.
id
OpcNodeId
The OpcNodeId through that the new data variable node can be identified and accessed.
value
T
The initial value of the new data variable node.
Initializes a new instance of the OpcDataVariableNode´1 class accessible by the name
specified with the initial value defined by value
as a child node of the parent
node given.
C#
public OpcDataVariableNode(IOpcNode parent, OpcName name, T value)
Parameters
parent
IOpcNode
The IOpcNode used as the parent node or a null reference (Nothing in Visual Basic) in the case there is no parent node available.
name
OpcName
The OpcName through that the new data variable node can be accessed.
value
T
The initial value of the new data variable node.
Initializes a new instance of the OpcDataVariableNode´1 class accessible by the name
specified.
C#
public OpcDataVariableNode(OpcName name)
Parameters
name
OpcName
The OpcName through that the new data variable node can be accessed.
Initializes a new instance of the OpcDataVariableNode´1 class accessible by the name
and id
specified.
C#
public OpcDataVariableNode(OpcName name, OpcNodeId id)
Parameters
name
OpcName
The OpcName through that the new data variable node can be accessed.
id
OpcNodeId
The OpcNodeId through that the new data variable node can be identified and accessed.
Initializes a new instance of the OpcDataVariableNode´1 class accessible by the name
and id
specified with the initial value given by value
.
C#
public OpcDataVariableNode(OpcName name, OpcNodeId id, T value)
Parameters
name
OpcName
The OpcName through that the new data variable node can be accessed.
id
OpcNodeId
The OpcNodeId through that the new data variable node can be identified and accessed.
value
T
The initial value of the new data variable node.
Initializes a new instance of the OpcDataVariableNode´1 class accessible by the name
specified with the initial value given by value
.
C#
public OpcDataVariableNode(OpcName name, T value)
Parameters
name
OpcName
The OpcName through that the new data variable node can be accessed.
value
T
The initial value of the new data variable node.
Gets or sets a value which defines a pre-defined used DataTypeId as one of the members defined by the OpcDataType enumeration to simplify querying standard data types.
C#
public override OpcDataType DataType { get; set; }
Property Value
One of the members defined by the OpcDataType enumeration.
Gets or sets the value of the data variable node.
C#
public T Value { get; set; }
Property Value
A T
representing the value of the data variable node. This can be also a null reference (Nothing in Visual Basic).
Initializes the default values used by the OpcDataVariableNode´1.
C#
protected override void InitializeDefaults()
Remarks
This method is used to ensure the availability of appropriate node specific default values. For more information like when this method is to be overwritten see InitializeDefaults.
Reads the data variable node value using the context
specified.
C#
public T ReadGenericValue(OpcReadVariableValueContext context)
Parameters
context
OpcReadVariableValueContext
The OpcReadVariableValueContext to use to read the data variable node value.
Returns
The T
data variable node value associated with this node and read using the context
specified. This can also be a null reference (Nothing in Visual Basic).
Exceptions
The context
is a null reference (Nothing in Visual Basic).
Writes the value
to the data variable node value using the context
specified.
C#
public void WriteGenericValue(OpcWriteVariableValueContext context, T value)
Parameters
context
OpcWriteVariableValueContext
The OpcWriteVariableValueContext to use to write the data variable node value
specified.
value
T
The T
to write to the data variable node value.
Exceptions
The context
is a null reference (Nothing in Visual Basic).