using System;
using System.Windows.Forms;
using Syncfusion.Licensing;

namespace MyWindowsFormsApp
{
    static class Program
    {
        [STAThread]
        static void Main()
        {
            // Register Syncfusion license key BEFORE any Syncfusion control is initiated
            SyncfusionLicenseProvider.RegisterLicense("YOUR_LICENSE_KEY_HERE");
            
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
}

Namespace My
    Partial Friend Class MyApplication
        Public Sub New()
            MyBase.New(Global.Microsoft.VisualBasic.ApplicationServices.AuthenticationMode.Windows)
            
            ' Register Syncfusion License
            Syncfusion.Licensing.SyncfusionLicenseProvider.RegisterLicense("YOUR_LICENSE_KEY_HERE")
            
            Me.IsSingleInstance = False
            Me.EnableVisualStyles = True
            Me.SaveMySettingsOnExit = True
            Me.ShutdownStyle = Global.Microsoft.VisualBasic.ApplicationServices.ShutdownMode.AfterMainFormCloses
        End Sub
    End Class
End Namespace