Reference

OpcDataVariableNode<T> Members

Type

OpcDataVariableNode<T>

Namespace

Opc.UaFx

Assembly

Opc.UaFx.Advanced.dll

Package

Opc.UaFx.Advanced v2.59.0

Inherits members from OpcDataVariableNode, OpcVariableNode, OpcInstanceNode, OpcNode.

Constructors

OpcDataVariableNode

18 overloads

Overload	Description
OpcDataVariableNode(OpcName)	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified.
OpcDataVariableNode(OpcName, T)	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified with the initial value given by value.
OpcDataVariableNode(OpcName, OpcNodeId)	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified.
OpcDataVariableNode(OpcName, OpcNodeId, T)	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified with the initial value given by value.
OpcDataVariableNode(IOpcNode, OpcName)	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified as a child node of the parent node given.
OpcDataVariableNode(IOpcNode, OpcName, T)	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified with the initial value defined by value as a child node of the parent node given.
OpcDataVariableNode(IOpcNode, OpcName, OpcNodeId)	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified as a child node of the parent node given.
OpcDataVariableNode(IOpcNode, OpcName, OpcNodeId, T)	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified with the initial value defined by value as a child node of the parent node given.
OpcDataVariableNode(BaseDataVariableState<T>)protected · since v2.50	Initializes a new instance of the OpcDataVariableNode<T> class using the content as the instance to wrap.
OpcDataVariableNode(BaseDataVariableState<T>, OpcNodeModel)protected · since v2.50	Initializes a new instance of the OpcDataVariableNode<T> class using the content as the instance to wrap.
OpcDataVariableNode(OpcNodeModel, OpcName)protected · since v2.50	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified.
OpcDataVariableNode(OpcNodeModel, OpcName, T)protected · since v2.50	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified with the initial value given by value.
OpcDataVariableNode(OpcNodeModel, OpcName, OpcNodeId)protected · since v2.50	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified.
OpcDataVariableNode(OpcNodeModel, OpcName, OpcNodeId, T)protected · since v2.50	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified with the initial value given by value.
OpcDataVariableNode(OpcNodeModel, IOpcNode, OpcName)protected · since v2.50	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified as a child node of the parent node given.
OpcDataVariableNode(OpcNodeModel, IOpcNode, OpcName, T)protected · since v2.50	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified with the initial value defined by value as a child node of the parent node given.
OpcDataVariableNode(OpcNodeModel, IOpcNode, OpcName, OpcNodeId)protected · since v2.50	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified as a child node of the parent node given.
OpcDataVariableNode(OpcNodeModel, IOpcNode, OpcName, OpcNodeId, T)protected · since v2.50	Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified with the initial value defined by value as a child node of the parent node given.

OpcDataVariableNode(OpcName)

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified.

public OpcDataVariableNode(OpcName name)

Public Sub New(name As OpcName)

Parameters

Name	Type	Description
name	OpcName	The OpcName through that the new data variable node can be accessed.

OpcDataVariableNode(OpcName, T)

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified with the initial value given by value.

public OpcDataVariableNode(OpcName name, T value)

Public Sub New(name As OpcName, value As T)

Parameters

Name	Type	Description
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.

OpcDataVariableNode(OpcName, OpcNodeId)

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified.

public OpcDataVariableNode(OpcName name, OpcNodeId id)

Public Sub New(name As OpcName, id As OpcNodeId)

Parameters

Name	Type	Description
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.

OpcDataVariableNode(OpcName, OpcNodeId, T)

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified with the initial value given by value.

public OpcDataVariableNode(OpcName name, OpcNodeId id, T value)

Public Sub New(name As OpcName, id As OpcNodeId, value As T)

Parameters

Name	Type	Description
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.

OpcDataVariableNode(IOpcNode, OpcName)

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified as a child node of the parent node given.

public OpcDataVariableNode(IOpcNode parent, OpcName name)

Public Sub New(parent As IOpcNode, name As OpcName)

Parameters

Name	Type	Description
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.

OpcDataVariableNode(IOpcNode, OpcName, T)

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified with the initial value defined by value as a child node of the parent node given.

public OpcDataVariableNode(IOpcNode parent, OpcName name, T value)

Public Sub New(parent As IOpcNode, name As OpcName, value As T)

Parameters

Name	Type	Description
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.

OpcDataVariableNode(IOpcNode, OpcName, OpcNodeId)

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified as a child node of the parent node given.

public OpcDataVariableNode(IOpcNode parent, OpcName name, OpcNodeId id)

Public Sub New(parent As IOpcNode, name As OpcName, id As OpcNodeId)

Parameters

Name	Type	Description
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.

OpcDataVariableNode(IOpcNode, OpcName, OpcNodeId, T)

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified with the initial value defined by value as a child node of the parent node given.

public OpcDataVariableNode(IOpcNode parent, OpcName name, OpcNodeId id, T value)

Public Sub New(parent As IOpcNode, name As OpcName, id As OpcNodeId, value As T)

Parameters

Name	Type	Description
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.

OpcDataVariableNode(BaseDataVariableState<T>)

protected · since v2.50

Initializes a new instance of the OpcDataVariableNode<T> class using the content as the instance to wrap.

protected OpcDataVariableNode(BaseDataVariableState<T> content)

Protected Sub New(content As BaseDataVariableState(Of T))

Parameters

Name	Type	Description
content	BaseDataVariableState<T>	The BaseDataVariableState<T> to wrap.

Exceptions

Exception	Condition
ArgumentNullException	The content is a null reference (Nothing in Visual Basic).

OpcDataVariableNode(BaseDataVariableState<T>, OpcNodeModel)

protected · since v2.50

Initializes a new instance of the OpcDataVariableNode<T> class using the content as the instance to wrap.

protected OpcDataVariableNode(
    BaseDataVariableState<T> content,
    OpcNodeModel model)

Protected Sub New(content As BaseDataVariableState(Of T), model As OpcNodeModel)

Parameters

Name	Type	Description
content	BaseDataVariableState<T>	The BaseDataVariableState<T> to wrap.
model	OpcNodeModel	The OpcNodeModel which defines the modelling directives for the new node or a null reference (Nothing in Visual Basic) if there are no directives are to be applied to the node.

Exceptions

Exception	Condition
ArgumentNullException	The content is a null reference (Nothing in Visual Basic).

OpcDataVariableNode(OpcNodeModel, OpcName)

protected · since v2.50

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified.

protected OpcDataVariableNode(OpcNodeModel model, OpcName name)

Protected Sub New(model As OpcNodeModel, name As OpcName)

Parameters

Name	Type	Description
model	OpcNodeModel	The OpcNodeModel which defines the modelling directives for the new node or a null reference (Nothing in Visual Basic) if there are no directives are to be applied to the node.
name	OpcName	The OpcName through that the new data variable node can be accessed.

OpcDataVariableNode(OpcNodeModel, OpcName, T)

protected · since v2.50

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified with the initial value given by value.

protected OpcDataVariableNode(OpcNodeModel model, OpcName name, T value)

Protected Sub New(model As OpcNodeModel, name As OpcName, value As T)

Parameters

Name	Type	Description
model	OpcNodeModel	The OpcNodeModel which defines the modelling directives for the new node or a null reference (Nothing in Visual Basic) if there are no directives are to be applied to the node.
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.

OpcDataVariableNode(OpcNodeModel, OpcName, OpcNodeId)

protected · since v2.50

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified.

protected OpcDataVariableNode(OpcNodeModel model, OpcName name, OpcNodeId id)

Protected Sub New(model As OpcNodeModel, name As OpcName, id As OpcNodeId)

Parameters

Name	Type	Description
model	OpcNodeModel	The OpcNodeModel which defines the modelling directives for the new node or a null reference (Nothing in Visual Basic) if there are no directives are to be applied to the node.
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.

OpcDataVariableNode(OpcNodeModel, OpcName, OpcNodeId, T)

protected · since v2.50

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified with the initial value given by value.

protected OpcDataVariableNode(
    OpcNodeModel model,
    OpcName name,
    OpcNodeId id,
    T value)

Protected Sub New(
    model As OpcNodeModel,
    name As OpcName,
    id As OpcNodeId,
    value As T)

Parameters

Name	Type	Description
model	OpcNodeModel	The OpcNodeModel which defines the modelling directives for the new node or a null reference (Nothing in Visual Basic) if there are no directives are to be applied to the node.
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.

OpcDataVariableNode(OpcNodeModel, IOpcNode, OpcName)

protected · since v2.50

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified as a child node of the parent node given.

protected OpcDataVariableNode(OpcNodeModel model, IOpcNode parent, OpcName name)

Protected Sub New(model As OpcNodeModel, parent As IOpcNode, name As OpcName)

Parameters

Name	Type	Description
model	OpcNodeModel	The OpcNodeModel which defines the modelling directives for the new node or a null reference (Nothing in Visual Basic) if there are no directives are to be applied to the node.
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.

OpcDataVariableNode(OpcNodeModel, IOpcNode, OpcName, T)

protected · since v2.50

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name specified with the initial value defined by value as a child node of the parent node given.

protected OpcDataVariableNode(
    OpcNodeModel model,
    IOpcNode parent,
    OpcName name,
    T value)

Protected Sub New(
    model As OpcNodeModel,
    parent As IOpcNode,
    name As OpcName,
    value As T)

Parameters

Name	Type	Description
model	OpcNodeModel	The OpcNodeModel which defines the modelling directives for the new node or a null reference (Nothing in Visual Basic) if there are no directives are to be applied to the node.
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.

OpcDataVariableNode(OpcNodeModel, IOpcNode, OpcName, OpcNodeId)

protected · since v2.50

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified as a child node of the parent node given.

protected OpcDataVariableNode(
    OpcNodeModel model,
    IOpcNode parent,
    OpcName name,
    OpcNodeId id)

Protected Sub New(
    model As OpcNodeModel,
    parent As IOpcNode,
    name As OpcName,
    id As OpcNodeId)

Parameters

Name	Type	Description
model	OpcNodeModel	The OpcNodeModel which defines the modelling directives for the new node or a null reference (Nothing in Visual Basic) if there are no directives are to be applied to the node.
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.

OpcDataVariableNode(OpcNodeModel, IOpcNode, OpcName, OpcNodeId, T)

protected · since v2.50

Initializes a new instance of the OpcDataVariableNode<T> class accessible by the name and id specified with the initial value defined by value as a child node of the parent node given.

protected OpcDataVariableNode(
    OpcNodeModel model,
    IOpcNode parent,
    OpcName name,
    OpcNodeId id,
    T value)

Protected Sub New(
    model As OpcNodeModel,
    parent As IOpcNode,
    name As OpcName,
    id As OpcNodeId,
    value As T)

Parameters

Name	Type	Description
model	OpcNodeModel	The OpcNodeModel which defines the modelling directives for the new node or a null reference (Nothing in Visual Basic) if there are no directives are to be applied to the node.
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.

Properties

DataType

override

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.

public override OpcDataType DataType { get; set; }

Public Overrides Property DataType As OpcDataType

Property value

OpcDataType

One of the members defined by the OpcDataType enumeration.

Overrides

DataType

Value

Gets or sets the value of the data variable node.

public T Value { get; set; }

Public Property Value As T

Property value

T

A T representing the value of the data variable node. This can be also a null reference (Nothing in Visual Basic).

Methods

InitializeDefaults

protected · override

Initializes the default values used by the OpcDataVariableNode<T>.

protected override void InitializeDefaults()

Protected Overrides Sub InitializeDefaults()

Overrides

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.

ReadGenericValue

Reads the data variable node value using the context specified.

public T ReadGenericValue(OpcReadVariableValueContext context)

Public Function ReadGenericValue(context As OpcReadVariableValueContext) As T

Parameters

Name	Type	Description
context	OpcReadVariableValueContext	The OpcReadVariableValueContext to use to read the data variable node value.

Returns

T

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

Exception	Condition
ArgumentNullException	The context is a null reference (Nothing in Visual Basic).

WriteGenericValue

Writes the value to the data variable node value using the context specified.

public void WriteGenericValue(OpcWriteVariableValueContext context, T value)

Public Sub WriteGenericValue(
    context As OpcWriteVariableValueContext,
    value As T)

Parameters

Name	Type	Description
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

Exception	Condition
ArgumentNullException	The context is a null reference (Nothing in Visual Basic).