Connectivity Software User's Guide and Reference
ChangeMultipleDataChangeSubscriptions Method



OpcLabs.EasyOpcUACore Assembly > OpcLabs.EasyOpc.UA Namespace > IEasyUAClientExtension Class : ChangeMultipleDataChangeSubscriptions Method
The client object that will perform the operation.

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

Array of subscription handles

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

The sampling interval (in milliseconds) indicates the fastest rate at which the Server should sample its underlying source for data changes.
The value of absolute deadband.
Changes parameters of multiple data change subscriptions. Specify the handles, a new sampling interval and absolute deadband value.
Syntax
'Declaration
 
<ExtensionAttribute()>
Public Shared Sub ChangeMultipleDataChangeSubscriptions( _
   ByVal client As IEasyUAClient, _
   ByVal handleArray() As Integer, _
   ByVal samplingInterval As Integer, _
   ByVal absoluteDeadbandValue As Double _
) 
'Usage
 
Dim client As IEasyUAClient
Dim handleArray() As Integer
Dim samplingInterval As Integer
Dim absoluteDeadbandValue As Double
 
IEasyUAClientExtension.ChangeMultipleDataChangeSubscriptions(client, handleArray, samplingInterval, absoluteDeadbandValue)
[Extension()]
public static void ChangeMultipleDataChangeSubscriptions( 
   IEasyUAClient client,
   int[] handleArray,
   int samplingInterval,
   double absoluteDeadbandValue
)
[Extension()]
public:
static void ChangeMultipleDataChangeSubscriptions( 
   IEasyUAClient^ client,
   array<int>^ handleArray,
   int samplingInterval,
   double absoluteDeadbandValue
) 

Parameters

client
The client object that will perform the operation.

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

handleArray
Array of subscription handles

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

samplingInterval
The sampling interval (in milliseconds) indicates the fastest rate at which the Server should sample its underlying source for data changes.
absoluteDeadbandValue
The value of absolute deadband.
Exceptions
ExceptionDescription

One of the arguments provided to a method is not valid.

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.

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.

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

This is an extension method (info: C#, VB.NET). In languages that have support for extensions methods (such as C# and VB.NET), you can use the extension method as if it were a regular method on the object that is its first parameter. In other languages (such as with Python.NET), you will call the extension as a static method, and pass it the object on which it acts as its first parameter.

Requirements

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

See Also