private void btnTop5Seller_Click(object sender, EventArgs e)
        {
            this.pnTop5Seller.Visible       = true;
            this.pnTop5BestSeller.Visible   = false;
            this.pnTop5Customer.Visible     = false;
            this.pnStatisticReveneu.Visible = false;

            this.btnTop5BestSeller.BaseColor   = Color.Silver;
            this.btnTop5Seller.BaseColor       = Color.DarkGray;
            this.btnTop5Customer.BaseColor     = Color.Silver;
            this.btnStatisticReveneu.BaseColor = Color.Silver;

            DataTable dtTop5Seller = StatisticController.Top5Seller().Tables[0];

            dtGVTop5Seller.Rows.Clear();
            foreach (DataRow dr in dtTop5Seller.Rows)
            {
                string Account = dr["UserName"].ToString();
                string ImageTemp;
                if (dr["Image"].ToString() == "")
                {
                    ImageTemp = Application.StartupPath.Substring(0, (Application.StartupPath.Length - 10)) + @"\images\imagesUser\Default.png";
                }
                else
                {
                    ImageTemp = Application.StartupPath.Substring(0, (Application.StartupPath.Length - 10)) + @"\images\imagesUser\" + dr["Image"].ToString();
                }
                image = Image.FromFile(ImageTemp);
                image = new Bitmap(image, new Size(70, 70));
                string FullName    = dr["FullName"].ToString();
                string TotalPrice  = dr["TotalPrice"].ToString();
                string PhoneNumber = dr["PhoneNumber"].ToString();
                string Email       = dr["Email"].ToString();
                dtGVTop5Seller.Rows.Add(Account, FullName, image, TotalPrice, PhoneNumber, Email);
            }
        }