Problem with creation of dynamic controls

using System;
using System.Windows.Forms;

namespace CreateControls
{
    static class Program
    {
        [STAThread]
        static void Main()
        {
            Form form = new Form() { Text = "CreateControls" };
            // Create a control to hold your dynamic one's
            // We use a Panel here
            Panel panelPlaceHolder = new Panel() { Dock = DockStyle.Left };
            // ... Dock it to the Form somewhere
            form.Controls.Add(panelPlaceHolder);
            // ... Create a Button to add new controls
            Button buttonAddControl = new Button() { Text = "Create Control", Dock = DockStyle.Top };
            form.Controls.Add(buttonAddControl);
            buttonAddControl.Click += delegate(object sender, EventArgs e)
            {
                // Create a new Control
                // ... maybe a Label? (could be any Control)
                Label label = new Label() { Text = "I'm new", Dock = DockStyle.Top };
                // add it to your Container
                panelPlaceHolder.Controls.Add(label);
            };

            // Run the example Form
            Application.Run(form);
        }
    }
}