DAReadParameters Constructor(DADataSource,Int32)

Initializes a new instance of the DAReadParameters object from a given DADataSource and a value age.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
Public Function New( _
   ByVal dataSource As DADataSource, _
   ByVal valueAge As Integer _
)

'Usage
 
Dim dataSource As DADataSource
Dim valueAge As Integer
 
Dim instance As New DAReadParameters(dataSource, valueAge)

public DAReadParameters( 
   DADataSource dataSource,
   int valueAge
)

public:
DAReadParameters( 
   DADataSource dataSource,
   int valueAge
)

Parameters

dataSource: Selects the data source for OPC reads (from device, from OPC cache, or dynamically determined).
valueAge: Determines the age of value you would like to obtain (in milliseconds).

Exceptions

Exception	Description
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.ComponentModel.InvalidEnumArgumentException	An invalid enumeration value was used. 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.

Exception

Description

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.ComponentModel.InvalidEnumArgumentException

An invalid enumeration value was used.

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.

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

DAReadParameters Class
DAReadParameters Members
Overload List

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