Програми для обліку

using Gtk;

class Program
{
    public static void Main()
    {
        Application.Init();
        new FirstWindow();
        Application.Run();
    }

    public static void Quit()
    {
        Application.Quit();
    }
}

using Gtk;

class FirstWindow : Window
{
    public FirstWindow() : base("Test")
    {
        SetDefaultSize(600, 350);
        SetPosition(WindowPosition.Center);

        DeleteEvent += delegate { Program.Quit(); };

        VBox vBox = new VBox();
        Add(vBox);

        HBox hBox = new HBox();
        vBox.PackStart(hBox, false, false, 5);

        ListStore store = new ListStore
        (
            typeof(Gdk.Pixbuf),
            typeof(string),
            typeof(string)
        );

        TreeView treeView = new TreeView(store);

        treeView.AppendColumn(new TreeViewColumn("", new CellRendererPixbuf(), "pixbuf", 0));
        treeView.AppendColumn(new TreeViewColumn("Id", new CellRendererText(), "text", 1));
        treeView.AppendColumn(new TreeViewColumn("Name", new CellRendererText() { Xpad = 4 }, "text", 2) { MinWidth = 20, Resizable = true, SortColumnId = 2 });
        //Пустишка для заповнення вільного простору
        treeView.AppendColumn(new TreeViewColumn());

        var img = new Gdk.Pixbuf("form.ico", 16, 16);

        store.AppendValues(img, "1", "Name A");
        store.AppendValues(img, "2", "Name B");
        store.AppendValues(img, "3", "Name C");

        hBox.PackStart(treeView, true, true, 5);

        ShowAll();
    }
}