Reference

OpcModifiedHistoryValue Members

Type

OpcModifiedHistoryValue

Namespace

Opc.UaFx

Assembly

Opc.UaFx.Advanced.dll

Package

Opc.UaFx.Advanced v2.59.0

Also in

Opc.UaFx.Client

Inherits members from OpcHistoryValue, OpcValue.

Constructors

OpcModifiedHistoryValue

3 overloads

Overload	Description
OpcModifiedHistoryValue(object, DateTime, OpcHistoryModificationInfo)	Initializes a new instance of the OpcModifiedHistoryValue class using the value, timestamp and modificationInfo specified.
OpcModifiedHistoryValue(object, DateTime, OpcStatus, OpcHistoryModificationInfo)	Initializes a new instance of the OpcModifiedHistoryValue class using the value, timestamp, status and modificationInfo specified.
OpcModifiedHistoryValue(object, DateTime, OpcStatusCode, OpcHistoryModificationInfo)	Initializes a new instance of the OpcModifiedHistoryValue class using the value, timestamp, statusCode and modificationInfo specified.

Exceptions (all overloads)

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

OpcModifiedHistoryValue(object, DateTime, OpcHistoryModificationInfo)

Initializes a new instance of the OpcModifiedHistoryValue class using the value, timestamp and modificationInfo specified.

public OpcModifiedHistoryValue(
    object value,
    DateTime timestamp,
    OpcHistoryModificationInfo modificationInfo)

Public Sub New(
    value As Object,
    timestamp As Date,
    modificationInfo As OpcHistoryModificationInfo)

Parameters

Name	Type	Description
value	Object	The value.
timestamp	DateTime	The time of the value, which is used as the source and the server timestamp.
modificationInfo	OpcHistoryModificationInfo	The information about the modification.

OpcModifiedHistoryValue(object, DateTime, OpcStatus, OpcHistoryModificationInfo)

Initializes a new instance of the OpcModifiedHistoryValue class using the value, timestamp, status and modificationInfo specified.

public OpcModifiedHistoryValue(
    object value,
    DateTime timestamp,
    OpcStatus status,
    OpcHistoryModificationInfo modificationInfo)

Public Sub New(
    value As Object,
    timestamp As Date,
    status As OpcStatus,
    modificationInfo As OpcHistoryModificationInfo)

Parameters

Name	Type	Description
value	Object	The value.
timestamp	DateTime	The time of the value, which is used as the source and the server timestamp.
status	OpcStatus	The status of the value.
modificationInfo	OpcHistoryModificationInfo	The information about the modification.

OpcModifiedHistoryValue(object, DateTime, OpcStatusCode, OpcHistoryModificationInfo)

Initializes a new instance of the OpcModifiedHistoryValue class using the value, timestamp, statusCode and modificationInfo specified.

[CLSCompliant(false)]
public OpcModifiedHistoryValue(
    object value,
    DateTime timestamp,
    OpcStatusCode statusCode,
    OpcHistoryModificationInfo modificationInfo)

<CLSCompliant(False)>
Public Sub New(
    value As Object,
    timestamp As Date,
    statusCode As OpcStatusCode,
    modificationInfo As OpcHistoryModificationInfo)

Parameters

Name	Type	Description
value	Object	The value.
timestamp	DateTime	The time of the value, which is used as the source timestamp.
statusCode	OpcStatusCode	The status code of the value.
modificationInfo	OpcHistoryModificationInfo	The information about the modification.

Remarks

Unlike the other constructors, this constructor sets the source timestamp only; the server timestamp remains unset.

Properties

ModificationInfo

Gets the information about the modification of the value.

public OpcHistoryModificationInfo ModificationInfo { get; }

Public ReadOnly Property ModificationInfo As OpcHistoryModificationInfo

Property value

OpcHistoryModificationInfo

The information about the modification.

ModificationTime

Gets the time of the modification of the value.

public DateTime ModificationTime { get; }

Public ReadOnly Property ModificationTime As Date

Property value

DateTime

The Time of the ModificationInfo.

ModificationType

Gets the kind of the modification of the value.

public OpcHistoryModificationType ModificationType { get; }

Public ReadOnly Property ModificationType As OpcHistoryModificationType

Property value

OpcHistoryModificationType

The Type of the ModificationInfo.

ModificationUserName

Gets the name of the user who modified the value.

public string ModificationUserName { get; }

Public ReadOnly Property ModificationUserName As String

Property value

String

The UserName of the ModificationInfo.

Timestamp

override

Gets the time of the modification of the value.

public override DateTime Timestamp { get; }

Public Overrides ReadOnly Property Timestamp As Date

Property value

DateTime

The ModificationTime.

Overrides

Timestamp

Remarks

Unlike Timestamp, the property provides the time of the modification, not the time of the value, which the ServerTimestamp and SourceTimestamp provide.

Methods

CompareTo

Compares the current OpcModifiedHistoryValue with another OpcModifiedHistoryValue.

public int CompareTo(OpcModifiedHistoryValue other)

Public Function CompareTo(other As OpcModifiedHistoryValue) As Integer

Parameters

Name	Type	Description
other	OpcModifiedHistoryValue	The OpcModifiedHistoryValue to compare with this OpcModifiedHistoryValue.

Returns

Int32

A 32-bit signed integer that indicates the relative order of the objects being compared (CompareTo(T)).

Equals

2 overloads

Overload	Description
Equals(object)override	Determines whether the specified other is equal to this OpcModifiedHistoryValue.
Equals(OpcModifiedHistoryValue)	Determines whether the specified other is equal to this OpcModifiedHistoryValue.

Equals(object)

override

Determines whether the specified other is equal to this OpcModifiedHistoryValue.

public override bool Equals(object other)

Public Overrides Function Equals(other As Object) As Boolean

Parameters

Name	Type	Description
other	Object	The OpcModifiedHistoryValue to compare to the current OpcModifiedHistoryValue.

Returns

Boolean

The value true if the specified OpcModifiedHistoryValue is equal to the current OpcModifiedHistoryValue; otherwise the value false.

Overrides

Equals

Equals(OpcModifiedHistoryValue)

Determines whether the specified other is equal to this OpcModifiedHistoryValue.

public bool Equals(OpcModifiedHistoryValue other)

Public Function Equals(other As OpcModifiedHistoryValue) As Boolean

Parameters

Name	Type	Description
other	OpcModifiedHistoryValue	The OpcModifiedHistoryValue to compare to the current OpcModifiedHistoryValue.

Returns

Boolean

The value true if the specified OpcModifiedHistoryValue is equal to the current OpcModifiedHistoryValue; otherwise the value false.

GetHashCode

override

Retrieves a hash code for this OpcModifiedHistoryValue.

public override int GetHashCode()

Public Overrides Function GetHashCode() As Integer

Returns

Int32

An int that contains the hash code for the OpcModifiedHistoryValue.

Overrides

GetHashCode

Operators

Equality

static

Returns a value indicating whether two instance of OpcModifiedHistoryValue are equal.

public static bool operator ==(
    OpcModifiedHistoryValue left,
    OpcModifiedHistoryValue right)

Public Shared Operator =(
    left As OpcModifiedHistoryValue,
    right As OpcModifiedHistoryValue) As Boolean

Parameters

Name	Type	Description
left	OpcModifiedHistoryValue	The first OpcModifiedHistoryValue to compare.
right	OpcModifiedHistoryValue	The second OpcModifiedHistoryValue to compare.

Returns

Boolean

The value true if left and right are equal; otherwise the value false.

GreaterThan

static

Determines whether the first specified OpcModifiedHistoryValue object is greater than the second specified OpcModifiedHistoryValue object.

public static bool operator >(
    OpcModifiedHistoryValue left,
    OpcModifiedHistoryValue right)

Public Shared Operator >(
    left As OpcModifiedHistoryValue,
    right As OpcModifiedHistoryValue) As Boolean

Parameters

Name	Type	Description
left	OpcModifiedHistoryValue	The first OpcModifiedHistoryValue object.
right	OpcModifiedHistoryValue	The second OpcModifiedHistoryValue object.

Returns

Boolean

The value true if left is greater than right; otherwise, false.

GreaterThanOrEqual

static

Determines whether the first specified OpcModifiedHistoryValue object is greater than or equal to the second specified OpcModifiedHistoryValue object.

public static bool operator >=(
    OpcModifiedHistoryValue left,
    OpcModifiedHistoryValue right)

Public Shared Operator >=(
    left As OpcModifiedHistoryValue,
    right As OpcModifiedHistoryValue) As Boolean

Parameters

Name	Type	Description
left	OpcModifiedHistoryValue	The first OpcModifiedHistoryValue object.
right	OpcModifiedHistoryValue	The second OpcModifiedHistoryValue object.

Returns

Boolean

The value true if left is greater than or equal to right; otherwise, false.

Inequality

static

Returns a value indicating whether two instances of OpcModifiedHistoryValue are not equal.

public static bool operator !=(
    OpcModifiedHistoryValue left,
    OpcModifiedHistoryValue right)

Public Shared Operator <>(
    left As OpcModifiedHistoryValue,
    right As OpcModifiedHistoryValue) As Boolean

Parameters

Name	Type	Description
left	OpcModifiedHistoryValue	The first OpcModifiedHistoryValue to compare.
right	OpcModifiedHistoryValue	The second OpcModifiedHistoryValue to compare.

Returns

Boolean

The value true if left and right are not equal; otherwise the value false.

LessThan

static

Determines whether the first specified OpcModifiedHistoryValue object is less than the second specified OpcModifiedHistoryValue object.

public static bool operator <(
    OpcModifiedHistoryValue left,
    OpcModifiedHistoryValue right)

Public Shared Operator <(
    left As OpcModifiedHistoryValue,
    right As OpcModifiedHistoryValue) As Boolean

Parameters

Name	Type	Description
left	OpcModifiedHistoryValue	The first OpcModifiedHistoryValue object.
right	OpcModifiedHistoryValue	The second OpcModifiedHistoryValue object.

Returns

Boolean

The value true if left is less than right; otherwise the value false.

Exceptions

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

LessThanOrEqual

static

Determines whether the first specified OpcModifiedHistoryValue object is less than or equal to the second OpcModifiedHistoryValue object.

public static bool operator <=(
    OpcModifiedHistoryValue left,
    OpcModifiedHistoryValue right)

Public Shared Operator <=(
    left As OpcModifiedHistoryValue,
    right As OpcModifiedHistoryValue) As Boolean

Parameters

Name	Type	Description
left	OpcModifiedHistoryValue	The first OpcModifiedHistoryValue object.
right	OpcModifiedHistoryValue	The second OpcModifiedHistoryValue object.

Returns

Boolean

The value true if left is less than or equal to right; otherwise the value false.

Exceptions

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