设定ListBox的选项显示不同的颜色

        /// <summary>
        /// 根据不同Type变量,ListBox的选项显示不同的颜色
        /// </summary>
        /// <param name="Type">类型ID号</param>
        /// <param name="lv">ListBox</param>
        /// <param name="e"></param>
        public static void ListBoxDrawItem(int Type, ListBox lv, DrawItemEventArgs e)
        {
            lv.DrawMode = DrawMode.OwnerDrawFixed;
            e.DrawBackground();
            Brush myBrush = Brushes.Black;
            switch (Type)
            {
                case 1: myBrush = Brushes.Red; break;
                case 2: myBrush = Brushes.Blue; break;
                case 3: myBrush = Brushes.Black; break;
            }
            e.Graphics.DrawString(lv.Items[e.Index].ToString(), e.Font, myBrush, e.Bounds, StringFormat.GenericDefault);
            e.DrawFocusRectangle();
        }