Customised TabControl using C#

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;

namespace ColorTabControlExample
{
    public partial class CTabControl : System.Windows.Forms.TabControl
    {
        public CTabControl()
        {
            this.ItemSize = new Size(80, 30);
            this.DrawMode = System.Windows.Forms.TabDrawMode.OwnerDrawFixed;
            this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
            this.DrawItem += new DrawItemEventHandler(this.RepaintControls);

            this.Invalidate();
        }


        private void RepaintControls(object sender, DrawItemEventArgs e)
        {
            try
            {
                Font font;
                Brush back_brush;
                Brush fore_brush;
                Rectangle bounds = e.Bounds;

                this.TabPages[e.Index].BackColor = Color.Silver;

                if (e.Index == this.SelectedIndex)
                {
                    font = new Font(e.Font, e.Font.Style);
                    back_brush = new SolidBrush(Color.DimGray);
                    fore_brush = new SolidBrush(Color.White);
                    bounds = new Rectangle(bounds.X + (this.Padding.X / 2), bounds.Y + this.Padding.Y, bounds.Width - this.Padding.X, bounds.Height - (this.Padding.Y * 2));
                }
                else
                {
                    font = new Font(e.Font, e.Font.Style & ~FontStyle.Bold);
                    back_brush = new SolidBrush(this.TabPages[e.Index].BackColor);
                    fore_brush = new SolidBrush(this.TabPages[e.Index].ForeColor);
                }

                string tab_name = this.TabPages[e.Index].Text;
                StringFormat sf = new StringFormat();
                sf.Alignment = StringAlignment.Center;
                sf.LineAlignment = StringAlignment.Center;
                e.Graphics.FillRectangle(back_brush, bounds);
                e.Graphics.DrawString(tab_name, font, fore_brush, bounds, sf);
               
                Brush background_brush = new SolidBrush(Color.DodgerBlue);
                Rectangle LastTabRect = this.GetTabRect(this.TabPages.Count - 1);
                Rectangle rect = new Rectangle();
                rect.Location = new Point(LastTabRect.Right + this.Left, this.Top );
                rect.Size = new Size(this.Right - rect.Left, LastTabRect.Height);
                e.Graphics.FillRectangle(background_brush, rect);
                background_brush.Dispose();
                
                sf.Dispose();
                back_brush.Dispose();
                fore_brush.Dispose();
                font.Dispose();
            }
            catch
            { }
        }
    }
}