Reference

OpcDataTypeMemberSwitchAttribute Class

since v2.8

Namespace

Opc.UaFx

Assembly

Opc.UaFx.Advanced.dll

Package

Opc.UaFx.Advanced v2.59.0

Members

OpcDataTypeMemberSwitchAttribute Members

Also in

Opc.UaFx.Client

Declares a field or property of a custom data type, to that the member belongs on that this attribute is applied, with conditional existence of the member within the stream of its custom data type. Use this attribute to explicitly declare a field or property as optional. Its existence within the stream of its custom data type is declared either using a bit within the encoding mask of the whole data type (see OpcDataTypeEncodingMaskAttribute) using the constructors OpcDataTypeMemberSwitchAttribute and OpcDataTypeMemberSwitchAttribute or using the value of a preceding member using the constructors OpcDataTypeMemberSwitchAttribute, OpcDataTypeMemberSwitchAttribute or OpcDataTypeMemberSwitchAttribute.

Syntax

[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field, AllowMultiple = false, Inherited = false)]
public class OpcDataTypeMemberSwitchAttribute : Attribute

<AttributeUsage(AttributeTargets.Property Or AttributeTargets.Field, AllowMultiple:=False, Inherited:=False)>
Public Class OpcDataTypeMemberSwitchAttribute
    Inherits Attribute

Inheritance

Object → Attribute → OpcDataTypeMemberSwitchAttribute

Constructors

Name	Description
OpcDataTypeMemberSwitchAttribute5 overloads	Initializes a new instance of the OpcDataTypeMemberSwitchAttribute class which declares a field or property to be optional while its existence is indicated by a single bit (the next free bit in sequence of all bits in the encoding mask used bits).

Properties

Name	Description
Bit	Gets the number of the bit which indiciates whether the field or property the attribute belongs to exists in the stream of the data type.
Name	Gets the name of the preceding member its value is to be evaluated to indicate that the member the attribute belongs exists in the stream of the data type.
Operator	Gets a value which identifies the comparison method to use to evaluate the value of member referenced by Name.
Value	Gets the value the value of the member referenced by Name is compared to.

Methods

Name	Description
GetSwitch	Retrieves the OpcMemberSwitch defined by the OpcDataTypeMemberSwitchAttribute using the bit specified.

Inherits members from Attribute.

Applies to

Package	Versions
Opc.UaFx.Advanced	v2.8–v2.59