Reference

OpcNamespace Class

Namespace

Opc.UaFx

Assembly

Opc.UaFx.Advanced.dll

Package

Opc.UaFx.Advanced v2.59.0

Members

OpcNamespace Members

Also in

Opc.UaFx.Client

Represents a nominal space used to categorize information like nodes, types, identifiers, etc. under a logical topic.

Syntax

public class OpcNamespace

Public Class OpcNamespace

Inheritance

Object → OpcNamespace

Implements

• IComparable
• IComparable<OpcNamespace>
• IEquatable<OpcNamespace>

Remarks

An OPC UA server provides an array of such topics known as namespaces. Within these list of namespaces a dedicated namespace can be determined by its unique Index. Its Uri does additionally inform about the general purpose, the source or the owner of the namespace.

The Default namespace uses an Index equals zero and a null reference (Nothing in Visual Basic) as the Uri. A system or custom defined OpcNamespace instance can have either an Index unequal to zero and/or an Uri unequal to a null reference (Nothing in Visual Basic).

A OpcNamespace can be constructed from a simple Uri. In case there the Host portion uses the UriHost the whole Uri information is not used for the Uri of the OpcNamespace except the Port portion. If it is not the scheme specific default port (see IsDefaultPort) and it is greater than zero it is used as the Index of the namespace.

In case there the OpcNamespace is constructed from a Uri which uses a different Host portion than UriHost the whole Uri is used as the Uri of the namespace except of an existing Port portion. If the Port portion is greater than zero and is not the scheme specific default port (see IsDefaultPort) it is used as the Index of the namespace. If the Scheme is equals to UriScheme, the UriSchemeHttp scheme is used instead for the Uri of the namespace. Additionally any Fragment and Query component is also discarded and any trailing '/' is trimmed from Path component of the Uri.

Fields

Name	Description
UriHoststatic	Specifies that an Uri is a pointer to a OPC UA namespace without a specific namespace Host.
UriSchemestatic	Specifies that an Uri is a pointer to a OPC UA namespace without a specific namespace Scheme.

Properties

Name	Description
Defaultstatic	Gets the default namespace used in cases there the concrete does not matter or is just unknown.
Index	Gets the index of the namespace within all namespaces of a server.
IsAbsolute	Gets a value indicating whether the namespace is absolute.
IsDefault	Gets a value indicating whether the namespace defines the default namespace without to refer to a specific address space.
IsResolved	Gets a value indicating whether the namespace is resolved regarding its Index, Uri and Value.
Scopesince v2.12	Gets scope within the current OpcNamespace has been declared and its metadata applies to.
Uri	Gets the uniform resource identifier (URI) of the namespace represented and referred to by the Index.
Valuesince v2.8	Gets the intrinsic value of the namespace represented and referred to by the Index.

Methods

Name	Description
Clearstatic	Empties the known namespaces.
CompareTo2 overloads	Compares the current OpcNamespace with the other.
Createstatic · 4 overloads	Creates a OpcNamespace from the Uri specified.
Equals2 overloads	Determines whether the specified other is equal to this OpcNamespace.
Getstatic · 5 overloads	Retrieves the OpcNamespace known under the namespaceIndex specified.
GetHashCodeoverride	Retrieves a hash code for this OpcNamespace.
GetId8 overloads	Retrieves a new OpcNodeId using the opaque value and this OpcNamespace.
GetName	Retrieves a new OpcName using the name and this OpcNamespace.
GetNextIdsince v2.29	Retrieves a new OpcNodeId using the next available numeric identifier within this OpcNamespace.
Parsestatic	Converts a namespace string to a OpcNamespace instance.
Resolve	Resolves missing OPC UA namespace information using the object specified by resolver.
ToStringoverride	Returns a string representing the namespace.
TryCreatestatic · 2 overloads	Determines whether a Uri is a valid namespace.
TryParsestatic	Determines whether a string is a valid namespace.

Operators

Name	Description
Equalitystatic	Returns a value indicating whether two instance of OpcNamespace are equal.
GreaterThanstatic	Determines whether the first specified OpcNamespace object is greater than the second specified OpcNamespace object.
GreaterThanOrEqualstatic	Determines whether the first specified OpcNamespace object is greater than or equal to the second specified OpcNamespace object.
Implicitstatic · 2 overloads	Converts a string to an OpcNamespace object.
Inequalitystatic	Returns a value indicating whether two instances of OpcNamespace are not equal.
LessThanstatic	Determines whether the first specified OpcNamespace object is less than the second specified OpcNamespace object.
LessThanOrEqualstatic	Determines whether the first specified OpcNamespace object is less than or equal to the second OpcNamespace object.

Applies to

Package	Versions
Opc.UaFx.Advanced	v2.5–v2.59