Namespace: Opc.UaFx
Assemblies: Opc.UaFx.Advanced.dll, Opc.UaFx.Advanced.dll
The OpcPropertyNode<T> type exposes the following members.
Initializes a new instance of the OpcPropertyNode´1 class accessible by the name
specified as a child node of the parent
node given.
C#
public OpcPropertyNode(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 property node can be accessed.
Initializes a new instance of the OpcPropertyNode´1 class accessible by the name
and id
specified as a child node of the parent
node given.
C#
public OpcPropertyNode(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 property node can be accessed.
id
OpcNodeId
The OpcNodeId through that the new property node can be identified and accessed.
Initializes a new instance of the OpcPropertyNode´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 OpcPropertyNode(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 property node can be accessed.
id
OpcNodeId
The OpcNodeId through that the new property node can be identified and accessed.
value
T
The initial value of the new property node.
Initializes a new instance of the OpcPropertyNode´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 OpcPropertyNode(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 property node can be accessed.
value
T
The initial value of the new property node.
Initializes a new instance of the OpcPropertyNode´1 class accessible by the name
specified.
C#
public OpcPropertyNode(OpcName name)
Parameters
name
OpcName
The OpcName through that the new property node can be accessed.
Initializes a new instance of the OpcPropertyNode´1 class accessible by the name
and id
specified.
C#
public OpcPropertyNode(OpcName name, OpcNodeId id)
Parameters
name
OpcName
The OpcName through that the new property node can be accessed.
id
OpcNodeId
The OpcNodeId through that the new property node can be identified and accessed.
Initializes a new instance of the OpcPropertyNode´1 class accessible by the name
and id
specified with the initial value given by value
.
C#
public OpcPropertyNode(OpcName name, OpcNodeId id, T value)
Parameters
name
OpcName
The OpcName through that the new property node can be accessed.
id
OpcNodeId
The OpcNodeId through that the new property node can be identified and accessed.
value
T
The initial value of the new property node.
Initializes a new instance of the OpcPropertyNode´1 class accessible by the name
specified with the initial value given by value
.
C#
public OpcPropertyNode(OpcName name, T value)
Parameters
name
OpcName
The OpcName through that the new property node can be accessed.
value
T
The initial value of the new property 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 a callback used to read the property generic value.
C#
public OpcReadPropertyValueCallback<T> ReadPropertyGenericValueCallback { get; set; }
Property Value
OpcReadPropertyValueCallback<T>
A OpcReadPropertyValueCallback´1 used to read the property value as the type defined by T
. The value can also be a null reference (Nothing in Visual Basic).
Remarks
This callback is used in call chain with the ReadPropertyValueCallback and will be called with the outcome of that callback routine (in case there is one defined).
Gets or sets the value of the property node.
C#
public T Value { get; set; }
Property Value
A T
representing the value of the property node. This can be also a null reference (Nothing in Visual Basic).
Gets or sets a callback used to write the property generic value.
C#
public OpcWritePropertyValueCallback<T> WritePropertyGenericValueCallback { get; set; }
Property Value
OpcWritePropertyValueCallback<T>
A OpcWritePropertyValueCallback´1 used to write the property value as the type defined by T
. The value can also be a null reference (Nothing in Visual Basic).
Remarks
This callback is used in call chain with the WritePropertyValueCallback and will be called with the outcome of that callback routine (in case there is one defined).
Initializes the default values used by the OpcPropertyNode´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 property node value using the context
specified.
C#
public T ReadGenericValue(OpcReadVariableValueContext context)
Parameters
context
OpcReadVariableValueContext
The OpcReadVariableValueContext to use to read the property node value.
Returns
The T
property 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).
Reads the value of the property node using the context
and value
information specified.
C#
protected virtual OpcPropertyValue<T> ReadPropertyGenericValueCore(OpcReadPropertyValueContext<OpcPropertyNode<T>> context, OpcPropertyValue<T> value)
Parameters
context
OpcReadPropertyValueContext<OpcPropertyNode`1>
The OpcReadPropertyValueContext´1 to use to read the property node value.
value
OpcPropertyValue<T>
The OpcPropertyValue´1 containing the currently used value constructed by the value information contained in the property node cache.
Returns
The OpcPropertyValue´1 read using the ReadPropertyGenericValueCallback or the value
if there is no custom callback routine defined.
Reads the value of the property node using the context
and value
information specified.
C#
protected override sealed OpcPropertyValue<object> ReadPropertyValueCore(OpcReadPropertyValueContext context, OpcPropertyValue<object> value)
Parameters
context
OpcReadPropertyValueContext
The OpcReadPropertyValueContext to use to read the property node value.
value
OpcPropertyValue<Object>
The OpcPropertyValue´1 containing the currently used value constructed by the value information contained in the property node cache.
Returns
The OpcPropertyValue´1 read using the ReadPropertyValueCallback or the value
if there is no custom callback routine defined.
Writes the value
to the property node value using the context
specified.
C#
public void WriteGenericValue(OpcWriteVariableValueContext context, T value)
Parameters
context
OpcWriteVariableValueContext
The OpcWriteVariableValueContext to use to write the property node value
specified.
value
T
The T
to write to the property node value.
Exceptions
The context
is a null reference (Nothing in Visual Basic).
Writes the value of the property node using the context
and value
information specified.
C#
protected virtual OpcPropertyValue<T> WritePropertyGenericValueCore(OpcWritePropertyValueContext<OpcPropertyNode<T>> context, OpcPropertyValue<T> value)
Parameters
context
OpcWritePropertyValueContext<OpcPropertyNode`1>
The OpcWritePropertyValueContext´1 to use to write the property node value.
value
OpcPropertyValue<T>
The OpcPropertyValue´1 containing the currently used value constructed by the value information contained in the property node cache.
Returns
The OpcPropertyValue´1 written using the WritePropertyGenericValueCallback or the value
if there is no custom callback routine defined.
Writes the value of the property node using the context
and value
information specified.
C#
protected override sealed OpcPropertyValue<object> WritePropertyValueCore(OpcWritePropertyValueContext context, OpcPropertyValue<object> value)
Parameters
context
OpcWritePropertyValueContext
The OpcWritePropertyValueContext to use to write the property node value.
value
OpcPropertyValue<Object>
The OpcPropertyValue´1 containing the currently used value constructed by the value information contained in the property node cache.
Returns
The OpcPropertyValue´1 written using the WritePropertyValueCallback or the value
if there is no custom callback routine defined.