UAReadParameters Constructor(Double,UAQualifiedName)

Name of the encoding that the server should use when returning the Value attribute of a variable.

Because the OpcLabs.EasyOpc.UA.AddressSpace.UAQualifiedName has an implicit conversion from System.String, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a string (representing the expanded text of the qualified name) in place of this parameter, and the corresponding OPC UA qualified name will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the OpcLabs.EasyOpc.UA.AddressSpace.UAQualifiedName.UAQualifiedName Constructor(String) constructor instead.

The value of this parameter cannot be null (Nothing in Visual Basic).

Initializes a new instance of the UAReadParameters object from a given value age and encoding name.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
Public Function New( _
   ByVal maximumAge As Double, _
   ByVal encodingName As UAQualifiedName _
)

'Usage
 
Dim maximumAge As Double
Dim encodingName As UAQualifiedName
 
Dim instance As New UAReadParameters(maximumAge, encodingName)

public UAReadParameters( 
   double maximumAge,
   UAQualifiedName encodingName
)

public:
UAReadParameters( 
   double maximumAge,
   UAQualifiedName^ encodingName
)

Parameters

maximumAge

Determines the age of value you would like to obtain (in milliseconds).

encodingName

Name of the encoding that the server should use when returning the Value attribute of a variable.

The value of this parameter cannot be null (Nothing in Visual Basic).

Exceptions

Exception Description

Exception	Description
System.ArgumentNullException	A `null` reference (`Nothing` in Visual Basic) is passed to a method that does not accept it as a valid argument. This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.
System.ArgumentOutOfRangeException	The value of an argument is outside the allowable range of values as defined by the invoked method. This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

System.ArgumentNullException

A null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

System.ArgumentOutOfRangeException

The value of an argument is outside the allowable range of values as defined by the invoked method.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

Remarks

The standard browse names to be used with encodingName are:

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

Reference

UAReadParameters Class
UAReadParameters Members
Overload List
EncodingName Property
MaximumAge Property

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