OPC Studio User's Guide and Reference
Examples - Server Licensing - Obtain serial number

.NET

// Shows how to obtain the serial number of the active license, and determine whether it is a stock demo or trial license.
// 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;

namespace UAServerDocExamples.Licensing
{
    partial class LicenseInfo
    {
        public static void SerialNumber()
        {
            // Instantiate the server object.
            var server = new EasyUAServer();

            // Obtain the serial number from the license info.
            long serialNumber = (uint)server.LicenseInfo["Multipurpose.SerialNumber"];

            // Display the serial number.
            Console.WriteLine("SerialNumber: {0}", serialNumber);

            // Determine whether we are running as demo or trial.
            if ((1111110000 <= serialNumber) && (serialNumber <= 1111119999))
                Console.WriteLine("This is a stock demo or trial license.");
            else
                Console.WriteLine("This is not a stock demo or trial license.");
        }
    }
}
' Shows how to obtain the serial number of the active license, and determine whether it is a stock demo or trial license.
' 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 OpcLabs.EasyOpc.UA

Namespace Licensing
    Partial Friend Class LicenseInfo
        Shared Sub SerialNumber()
            ' Instantiate the server object.
            Dim server = New EasyUAServer()

            '  Obtain the serial number from the license info.
            Dim serialNumber As Long = CUInt(server.LicenseInfo("Multipurpose.SerialNumber"))

            ' Display the serial number.
            Console.WriteLine("SerialNumber: {0}", serialNumber)

            ' Determine whether we are running as demo or trial.
            If (1111110000 <= serialNumber) And (serialNumber <= 1111119999) Then
                Console.WriteLine("This is a stock demo or trial license.")
            Else
                Console.WriteLine("This is not a stock demo or trial license.")
            End If
        End Sub
    End Class
End Namespace
See Also

Examples - Client Licensing