DataType Property (AEAttributeElement)

Data type of the event attribute (a VARTYPE).

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
Public Property DataType As VarType

'Usage
 
Dim instance As AEAttributeElement
Dim value As VarType
 
instance.DataType = value
 
value = instance.DataType

public VarType DataType {get; set;}

public:
property VarType^ DataType {
   VarType^ get();
   void set (    VarType^ value);
}

Example

CSharp
VB.NET

// This example shows information available about OPC event attribute.

using System;
using System.Diagnostics;
using OpcLabs.EasyOpc.AlarmsAndEvents;
using OpcLabs.EasyOpc.AlarmsAndEvents.AddressSpace;
using OpcLabs.EasyOpc.OperationModel;

namespace DocExamples.AlarmsAndEvents._AEAttributeElement
{
    class Properties
    {
        public static void Main1()
        {
            // Instantiate the client object.
            var client = new EasyAEClient();

            AECategoryElementCollection categoryElements;
            try
            {
                categoryElements = client.QueryEventCategories("", "OPCLabs.KitEventServer.2");
            }
            catch (OpcException opcException)
            {
                Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message);
                return;
            }

            foreach (AECategoryElement categoryElement in categoryElements)
            {
                Debug.Assert(categoryElement != null);

                Console.WriteLine("Category {0}:", categoryElement);
                foreach (AEAttributeElement attributeElement in categoryElement.AttributeElements)
                {
                    Debug.Assert(attributeElement != null);

                    Console.WriteLine("    Information about attribute {0}:", attributeElement);
                    Console.WriteLine("        .AttributeId: {0}", attributeElement.AttributeId);
                    Console.WriteLine("        .Description: {0}", attributeElement.Description);
                    Console.WriteLine("        .DataType: {0}", attributeElement.DataType);
                }
            }
        }
    }
}

' This example shows information available about OPC event attribute.

Imports OpcLabs.EasyOpc.AlarmsAndEvents
Imports OpcLabs.EasyOpc.AlarmsAndEvents.AddressSpace
Imports OpcLabs.EasyOpc.OperationModel

Namespace DocExamples.AlarmsAndEvents._AEAttributeElement

    Friend Class Properties
        Public Shared Sub Main1()
            Dim client = New EasyAEClient()

            Dim categoryElements As AECategoryElementCollection
            Try
                categoryElements = client.QueryEventCategories("", "OPCLabs.KitEventServer.2")
            Catch opcException As OpcException
                Console.WriteLine("*** Failure: {0}", opcException.GetBaseException().Message)
                Exit Sub
            End Try

            For Each categoryElement As AECategoryElement In categoryElements
                Debug.Assert(categoryElement IsNot Nothing)

                Console.WriteLine("Category {0}:", categoryElement)
                For Each attributeElement As AEAttributeElement In categoryElement.AttributeElements
                    Debug.Assert(attributeElement IsNot Nothing)

                    Console.WriteLine("    Information about attribute {0}:", attributeElement)
                    Console.WriteLine("        .AttributeId: {0}", attributeElement.AttributeId)
                    Console.WriteLine("        .Description: {0}", attributeElement.Description)
                    Console.WriteLine("        .DataType: {0}", attributeElement.DataType)
                Next attributeElement
            Next categoryElement
        End Sub
    End Class

End Namespace

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2012, Windows Server 2016; .NET Core, .NET 5, .NET 6: Linux, macOS, Microsoft Windows

Reference

AEAttributeElement Class
AEAttributeElement Members