Add close button to TabControl TabPages in C#

In this tutorial we will see how to enable user to close a TabPage by adding a close button to the Tab header like this:

First we add some variables:

public partial class Form1 : Form
    {
        private Point _imageLocation = new Point(13, 5);
        private Point _imgHitArea = new Point(13, 2);

        Image CloseImage;

        public Form1()
        {
            InitializeComponent();
        }
    }

In Form_Load event we add this code:

tabControl1.DrawMode = TabDrawMode.OwnerDrawFixed;
tabControl1.DrawItem += tabControl1_DrawItem;
CloseImage = WindowsFormsApplication3.Properties.Resources.closeR;
tabControl1.Padding = new Point(10, 3);

closeR is a close button png image in resources folder of the project.

Then we re-write Draw_Item method of TabControl:

private void TabControl1_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
        {
            try
            {
                Image img = new Bitmap(CloseImage);
                Rectangle r = e.Bounds;
                r = this.tabControl1.GetTabRect(e.Index);
                r.Offset(2, 2);
                Brush TitleBrush = new SolidBrush(Color.Black);
                Font f = this.Font;
                string title = this.tabControl1.TabPages[e.Index].Text;

                e.Graphics.DrawString(title, f, TitleBrush, new PointF(r.X, r.Y));

                if (tabControl1.SelectedIndex >= 1)
                {
                    e.Graphics.DrawImage(img, new Point(r.X + (this.tabControl1.GetTabRect(e.Index).Width - _imageLocation.X), _imageLocation.Y));
                }
            }
            catch (Exception) { }
        }

In Mouse_Click event of the TabControl:

TabControl tc = (TabControl)sender;
Point p = e.Location;
int _tabWidth = 0;
_tabWidth = this.tabControl1.GetTabRect(tc.SelectedIndex).Width - (_imgHitArea.X);
Rectangle r = this.tabControl1.GetTabRect(tc.SelectedIndex);
r.Offset(_tabWidth, _imgHitArea.Y);
r.Width = 16;
r.Height = 16;
if (tabControl1.SelectedIndex >= 1)
{
    if (r.Contains(p))
    {
        TabPage TabP = (TabPage)tc.TabPages[tc.SelectedIndex];
        tc.TabPages.Remove(TabP);
    }

}

More explanation in this video: