Custom Progressbar

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Drawing.Drawing2D;


namespace Updater
{
    [CLSCompliant(true)]
    public partial class ProgressBar : UserControl
    {
        public ProgressBar()
        {
            InitializeComponent();
            SetStyle(ControlStyles.AllPaintingInWmPaint, true);
            SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
        }
        [CLSCompliant(true)]
        [RefreshProperties(RefreshProperties.Repaint)]
        [Browsable(true)]
        [Category("Appearance")]
        [DefaultValue(100)]
        public int Maximum {
            get {
                return _maximum;
            }
            set {
                _maximum = value;
                this.Invalidate();
            }
        }


        [CLSCompliant(true)]
        [RefreshProperties(RefreshProperties.Repaint)]
        [Browsable(true)]
        [Category("Appearance")]
        [DefaultValue(0)]
        public int Value {
            get {
                return _value;
            }
            set {
                _value = value;
                this.Invalidate();
            }
        }


        [CLSCompliant(true)]
        [RefreshProperties(RefreshProperties.Repaint)]
        [Browsable(true)]
        [Category("Appearance")]
        [DefaultValue(null)]
        public Image ProgressbarImage {
            get {
                return _progressbarImage;
            }
            set {
                _progressbarImage = value;
                this.Invalidate();
            }
        }


        [CLSCompliant(true)]
        [RefreshProperties(RefreshProperties.Repaint)]
        [Browsable(true)]
        [Category("Appearance")]
        [DefaultValue(typeof(Color), "DarkGray")]
        public Color ProgressbarColor {
            get {
                return _progressbarColor;
            }
            set {
                _progressbarColor = value;
                this.Invalidate();
            }
        }


        [CLSCompliant(true)]
        [Browsable(true)]
        [Category("Behavior")]
        [DefaultValue(true)]
        public bool RevealImage {
            get {
                return _revealImage;
            }
            set {
                _revealImage = value;
                this.Invalidate();
            }
        }


        private bool _revealImage = true;
        private int _maximum = 100;
        private int _value = 0;
        private Image _progressbarImage = null;
        private Color _progressbarColor = Color.DarkGray;


        protected override void OnPaint(System.Windows.Forms.PaintEventArgs e) 
        {


            Graphics g = e.Graphics;
            Rectangle r = this.ClientRectangle;


            r.Inflate(-1, -1);
            r.Width = (((r.Width * (_value / _maximum))) - 1);
            if ((r.Width < 1)) {
                return;
            }


            if (_progressbarImage == null) {
                using (SolidBrush b = new SolidBrush(_progressbarColor)) {
                    g.FillRectangle(b, r);
                }
            }
            else {
                g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                if (_revealImage) {
                    g.DrawImage(_progressbarImage, r, r, GraphicsUnit.Pixel);
                }
                else {
                    g.DrawImage(_progressbarImage, r);
                }
            }
        }
    }
}

r.Inflate(-1, -1);
            r.Width = (((r.Width * (_value / _maximum))) - 1);
            if ((r.Width < 1)) {
                return;
            }