OPC Studio User's Guide and Reference
Examples - Server OPC UA - Dispose of the server object, stopping it

.NET

// This example shows how to use the IDisposable interface to automatically stop the OPC UA server.
// You can use any OPC UA client, including our Connectivity Explorer and OpcCmd utility, to connect to the server. 
//
// Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
// OPC client, server and subscriber examples in C# on GitHub: https://github.com/OPCLabs/Examples-OPCStudio-CSharp .
// Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
// a commercial license in order to use Online Forums, and we reply to every post.

using System;
using OpcLabs.EasyOpc.UA;
using OpcLabs.EasyOpc.UA.NodeSpace;

namespace UAServerDocExamples._EasyUAServer
{
    class Dispose
    {
        public static void Main1()
        {
            // Instantiate the server object.
            // By default, the server will run on endpoint URL "opc.tcp://localhost:48040/".
            //
            // The "using" statement ensures disposal of the resource it acquires.
            using (var server = new EasyUAServer())
            {
                // Define a data variable providing random integers.
                var random = new Random();
                server.Add(new UADataVariable("MyDataVariable").ReadValueFunction(() => random.Next()));

                // Start the server.
                Console.WriteLine("The server is starting...");
                server.Start();

                Console.WriteLine("The server is started.");
                Console.WriteLine();

                // Let the user decide when to stop.
                Console.WriteLine("Press Enter to stop the server...");
                Console.ReadLine();

                // The IDisposable.Dispose call (automatically made at the end of the "using" statement) stops the
                // EasyUAServer if it is started.
                Console.WriteLine("The server is stopping...");
            }
            Console.WriteLine("The server is stopped.");
        }
    }
}
' This example shows how to use the IDisposable interface to automatically stop the OPC UA server.
' You can use any OPC UA client, including our Connectivity Explorer and OpcCmd utility, to connect to the server. 
'
' Find all latest examples here: https://opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Latest/examples.html .
' OPC client and subscriber examples in VB.NET on GitHub: https://github.com/OPCLabs/Examples-QuickOPC-VBNET .
' Missing some example? Ask us for it on our Online Forums, https://www.opclabs.com/forum/index ! You do not have to own
' a commercial license in order to use Online Forums, and we reply to every post.

Imports System
Imports OpcLabs.EasyOpc.AlarmsAndEvents
Imports OpcLabs.EasyOpc.UA
Imports OpcLabs.EasyOpc.UA.NodeSpace

Namespace _EasyUAServer
    Partial Friend Class Dispose
        Shared Sub Main1()
            ' Instantiate the server object.
            ' By default, the server will run on endpoint URL "opc.tcp://localhost:48040/".
            ' 
            ' The "Using" statement ensures disposal of the resource it acquires.
            Using server = New EasyUAServer()
                ' Define a data variable providing random integers.
                Dim random = New Random()
                server.Add(New UADataVariable("MyDataVariable").ReadValueFunction(Function() random.Next()))

                ' Start the server.
                Console.WriteLine("The server is starting...")
                server.Start()

                Console.WriteLine("The server is started.")
                Console.WriteLine()

                ' Let the user decide when to stop.
                Console.WriteLine("Press Enter to stop the server...")
                Console.ReadLine()

                ' The IDisposable.Dispose call (automatically made at the end of the "using" statement) stops the
                ' EasyUAServer if it is started.
                Console.WriteLine("The server is stopping...")
            End Using
        End Sub
    End Class
End Namespace
See Also

Concepts