System.Windows.Forms.CustomTabControl.AddPageBorder C# (CSharp) Method

        private void AddPageBorder(GraphicsPath path, Rectangle pageBounds, Rectangle tabBounds)
        {
            switch (this.Alignment) {
                case TabAlignment.Top:
                    path.AddLine(tabBounds.Right, pageBounds.Y, pageBounds.Right, pageBounds.Y);
                    path.AddLine(pageBounds.Right, pageBounds.Y, pageBounds.Right, pageBounds.Bottom);
                    path.AddLine(pageBounds.Right, pageBounds.Bottom, pageBounds.X, pageBounds.Bottom);
                    path.AddLine(pageBounds.X, pageBounds.Bottom, pageBounds.X, pageBounds.Y);
                    path.AddLine(pageBounds.X, pageBounds.Y, tabBounds.X, pageBounds.Y);
                    break;
                case TabAlignment.Bottom:
                    path.AddLine(tabBounds.X, pageBounds.Bottom, pageBounds.X, pageBounds.Bottom);
                    path.AddLine(pageBounds.X, pageBounds.Bottom, pageBounds.X, pageBounds.Y);
                    path.AddLine(pageBounds.X, pageBounds.Y, pageBounds.Right, pageBounds.Y);
                    path.AddLine(pageBounds.Right, pageBounds.Y, pageBounds.Right, pageBounds.Bottom);
                    path.AddLine(pageBounds.Right, pageBounds.Bottom, tabBounds.Right, pageBounds.Bottom);
                    break;
                case TabAlignment.Left:
                    path.AddLine(pageBounds.X, tabBounds.Y, pageBounds.X, pageBounds.Y);
                    path.AddLine(pageBounds.X, pageBounds.Y, pageBounds.Right, pageBounds.Y);
                    path.AddLine(pageBounds.Right, pageBounds.Y, pageBounds.Right, pageBounds.Bottom);
                    path.AddLine(pageBounds.Right, pageBounds.Bottom, pageBounds.X, pageBounds.Bottom);
                    path.AddLine(pageBounds.X, pageBounds.Bottom, pageBounds.X, tabBounds.Bottom);
                    break;
                case TabAlignment.Right:
                    path.AddLine(pageBounds.Right, tabBounds.Bottom, pageBounds.Right, pageBounds.Bottom);
                    path.AddLine(pageBounds.Right, pageBounds.Bottom, pageBounds.X, pageBounds.Bottom);
                    path.AddLine(pageBounds.X, pageBounds.Bottom, pageBounds.X, pageBounds.Y);
                    path.AddLine(pageBounds.X, pageBounds.Y, pageBounds.Right, pageBounds.Y);
                    path.AddLine(pageBounds.Right, pageBounds.Y, pageBounds.Right, tabBounds.Y);
                    break;
            }
        }