System.Windows.Forms.Accordion.Add C# (CSharp) Method

        public AccordionButton Add(string itemText, Control container)
        {
            int visibleItems = 0;
            for (int i = 0; i < Controls.Count; i++)
                if (Controls[i].Visible)
                    visibleItems++;

            AccordionButton itemButton = new AccordionButton(this);
            itemButton.Anchor = AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Top;
            itemButton.Location = new Point(0, visibleItems * (ItemHeight + ItemSpace));
            itemButton.Width = Width;
            itemButton.Text = itemText;

            container.Visible = false;

            Controls.Add(itemButton);
            Controls.Add(container);

            Refresh();
            return itemButton;
        }