GroupParameters Property (DAItemGroupArguments)

Gets or sets the OPC group parameters that are an argument to the operation.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<DataMemberAttribute()>
Public Property GroupParameters As DAGroupParameters

'Usage
 
Dim instance As DAItemGroupArguments
Dim value As DAGroupParameters
 
instance.GroupParameters = value
 
value = instance.GroupParameters

[DataMember()]
public DAGroupParameters GroupParameters {get; set;}

[DataMember()]
public:
property DAGroupParameters^ GroupParameters {
   DAGroupParameters^ get();
   void set (    DAGroupParameters^ value);
}

Property Value

The value of this property 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.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.

Remarks

Because the OpcLabs.EasyOpc.DataAccess.DAGroupParameters has an implicit conversion from System.Int32, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use an integer (representing the requested update rate in milliseconds) in place of the OpcLabs.EasyOpc.DataAccess.DAGroupParameters value when setting this property, and the corresponding OPC DA group parameters object will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the DAGroupParameters Constructor(Int32) constructor instead.

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

DAItemGroupArguments Class
DAItemGroupArguments Members

Documentation Home, Send Feedback. Resources: Knowledge Base, Product Downloads. Technical support: Online Forums, FAQ.

Missing some example? Ask us for it on our Online Forums! You do not have to own a commercial license in order to use Online Forums, and we reply to every post.