Datetime picker as a icon in C# Windows application

public partial class IconDateTimePicker : UserControl
{
    MonthCalendar myCal;

    public IconDateTimePicker()
    {
        InitializeComponent();

        //set up myCal
        myCal = new MonthCalendar();
        myCal.Visible = false;

        //hook the events
        myCal.DateSelected += new DateRangeEventHandler(this.monthCalendar_DateSelected);
        myCal.Leave += new EventHandler(this.monthCalendar_Leave);
    }

    //handle when the PictureBox is clicked
    private void pictureBox1_Click(object sender, EventArgs e)
    {
        myCal.Visible = !myCal.Visible;
        myCal.Focus();
    }

    //handle when the UserControl has been added to a form
    private void IconDateTimePicker_ParentChanged(object sender, EventArgs e)
    {
        //add mycal to the parent
        //you could also use a floating form
        this.Parent.Controls.Add(myCal);
        myCal.Left = (this.Left + this.pictureBox1.Right) - myCal.Width;
        myCal.Top = this.Bottom + 5;
    }

    private void monthCalendar_DateSelected(object sender, DateRangeEventArgs e)
    {
        this.textBox1.Text = ((MonthCalendar)sender).SelectionStart.ToShortDateString();
        myCal.Visible = false;
    }

    private void monthCalendar_Leave(object sender, EventArgs e)
    {
        myCal.Visible = false;
    }
}