OpcPropertyNode<T> Members

Namespace: Opc.UaFx
Assemblies: Opc.UaFx.Advanced.dll, Opc.UaFx.Advanced.dll
The OpcPropertyNode<T> type exposes the following members.

OpcPropertyNode(IOpcNode, OpcName)

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.

OpcPropertyNode(IOpcNode, OpcName, OpcNodeId)

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.

OpcPropertyNode(IOpcNode, OpcName, OpcNodeId, T)

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.

OpcPropertyNode(IOpcNode, OpcName, T)

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.

OpcPropertyNode(OpcName)

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.

OpcPropertyNode(OpcName, OpcNodeId)

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.

OpcPropertyNode(OpcName, OpcNodeId, T)

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.

OpcPropertyNode(OpcName, T)

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.

DataType

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

OpcDataType

One of the members defined by the OpcDataType enumeration.

ReadPropertyGenericValueCallback

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).

Value

Gets or sets the value of the property node.

C#

public T Value { get; set; }


Property Value

T

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

WritePropertyGenericValueCallback

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).

InitializeDefaults()

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.

ReadGenericValue(OpcReadVariableValueContext)

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

T

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

ArgumentNullException

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

ReadPropertyGenericValueCore(OpcReadPropertyValueContext<OpcPropertyNode<T>>, OpcPropertyValue<T>)

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

OpcPropertyValue<T>

The OpcPropertyValue´1 read using the ReadPropertyGenericValueCallback or the value if there is no custom callback routine defined.

ReadPropertyValueCore(OpcReadPropertyValueContext, OpcPropertyValue<Object>)

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

OpcPropertyValue<Object>

The OpcPropertyValue´1 read using the ReadPropertyValueCallback or the value if there is no custom callback routine defined.

WriteGenericValue(OpcWriteVariableValueContext, T)

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

ArgumentNullException

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

WritePropertyGenericValueCore(OpcWritePropertyValueContext<OpcPropertyNode<T>>, OpcPropertyValue<T>)

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

OpcPropertyValue<T>

The OpcPropertyValue´1 written using the WritePropertyGenericValueCallback or the value if there is no custom callback routine defined.

WritePropertyValueCore(OpcWritePropertyValueContext, OpcPropertyValue<Object>)

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

OpcPropertyValue<Object>

The OpcPropertyValue´1 written using the WritePropertyValueCallback or the value if there is no custom callback routine defined.