static class Program
{
    [STAThread]
    static void Main()
    {
        Application.Run(new SboAddonContext());
    }
}

    public class MyFormController : FormController, IFormMenuItem
    {
        public string MenuItemTitle => "My Form";
        public string ParentMenuItemId => SboMenuItem.Finance;
    }

static class Program
{
    static void Main()
    {
        // From app.config
        SboApp.DiConnectFromAppConfig();
    }
}

    public class MySetup : ISetup
    {
        public const string UDT_MyData = "ITCO_Mydata";
        public const string UDF_CardCode = "CardCode";
        public const string UDF_Amount = "Amount";

        public int Version => 1;

        public void Run()
        {
            UserDefinedHelper.CreateTable(UDT_MyData, "My Data")
                .CreateUDF(UDF_CardCode, "CardCode", BoFieldTypes.db_Alpha, 30)
                .CreateUDF(UDF_Amount, "Amount", BoFieldTypes.db_Float, 30, BoFldSubTypes.st_Price);

            SettingService.InitSetting<string>("my.setting.1", "My Setting 1", "value123");
            SettingService.InitSetting<int>("my.setting.2", "My Setting 2", 0);
        }
    }

// Finds and run all ISetup classes
SetupManager.FindAndRunSetups(GetType().Assembly);
// or run manually
SetupManager.RunSetup(new MySetup());

var mySetting = SettingService.GetSettingByKey("itco.mysetting", 0);

using (var query = new SboRecordsetQuery("SELECT [DocNum] FROM [ORDR]"))
{
    if (query.Count == 0)
        SboApp.Application.MessageBox("No Matches!");

    foreach (var row in query.Result)
    {
        var docNum = row.Item("DocNum").Value;
    }
}

var combobox = Form.GetComboBox("MyCombo");
combobox.AddComboBoxValues("SELECT CardCode, Cardname FROM OCRD");