C#

        void dropDownListBox_DrawItem(object sender, DrawItemEventArgs e)
            {
            Brush myBrush = Brushes.Green;
            Brush backBrush = Brushes.Red; // This color not used
           
            // string to draw
            string listString = dropDownListBox.Items[e.Index].ToString();

            // paint the list background
            e.DrawBackground();

            switch (listString)
                {
                case "Advanced Filter...":
                    myBrush = Brushes.DarkGreen;
                    backBrush = Brushes.PaleGreen;
                    e.Graphics.FillRectangle(backBrush, e.Bounds);
                    // check what filter commands are included in the list
                    // draw a separator line below the command if it is the last before the autofilter choices
                    if (filterCommandFlag == 2)
                        {
                        // needed to draw the line at e.Bounds.Bottom-1 otherwise the line was overwritten at times
                        e.Graphics.DrawLine(Pens.Green, e.Bounds.Left, e.Bounds.Bottom - 1, e.Bounds.Right, e.Bounds.Bottom - 1);
                        }
                    break;

                case "Remove This Filter":
                    myBrush = Brushes.DarkGreen;
                    backBrush = Brushes.PaleGreen;
                    e.Graphics.FillRectangle(backBrush, e.Bounds);
                    // no need for separator line here. This entry is never the last.
                    //e.Graphics.DrawLine(Pens.Black, e.Bounds.Left, e.Bounds.Bottom-1, e.Bounds.Right, e.Bounds.Bottom-1);
                    break;

                case "Remove All Filters":
                    myBrush = Brushes.OrangeRed;
                    backBrush = Brushes.PaleGreen;
                    e.Graphics.FillRectangle(backBrush, e.Bounds);
                    // check what filter commands are included in the list
                    // draw a separator line below the command if it is the last before the autofilter choices
                    if (filterCommandFlag > 3 && filterCommandFlag < 8)
                        {
                        // needed to draw the line at e.Bounds.Bottom-1 otherwise the line was overwritten at times
                        e.Graphics.DrawLine(Pens.Green, e.Bounds.Left, e.Bounds.Bottom - 1, e.Bounds.Right, e.Bounds.Bottom - 1);
                        }
                    break;

                case "Blanks":
                    myBrush = Brushes.OrangeRed;
                    backBrush = Brushes.PaleGreen;
                    e.Graphics.FillRectangle(backBrush, e.Bounds);
                    // check what filter commands are included in the list
                    // draw a separator line below the command if it is the last before the autofilter choices
                    //if (filterCommandFlag == 3)
                    //    {
                    //    // needed to draw the line at e.Bounds.Bottom-1 otherwise the line was overwritten at times
                    //    e.Graphics.DrawLine(Pens.Green, e.Bounds.Left, e.Bounds.Bottom - 1, e.Bounds.Right, e.Bounds.Bottom - 1);
                    //    }

                    break;

                case "NonBlanks":
                    myBrush = Brushes.OrangeRed;
                    backBrush = Brushes.PaleGreen;
                    e.Graphics.FillRectangle(backBrush, e.Bounds);
                    // check what filter commands are included in the list
                    // draw a separator line below the command if it is the last before the autofilter choices
                    if (filterCommandFlag > 7)
                        {
                        // needed to draw the line at e.Bounds.Bottom-1 otherwise the line was overwritten at times
                        e.Graphics.DrawLine(Pens.Green, e.Bounds.Left, e.Bounds.Bottom - 1, e.Bounds.Right, e.Bounds.Bottom - 1);
                        }

                    break;
                }
            // If the item is the selected item, then draw the rectangle
            // filled in. The item is selected when a bitwise And  
            // of the State property and the DrawItemState.Selected 
            // property is true.
            if ((e.State & DrawItemState.Selected) == DrawItemState.Selected)
                {
                e.Graphics.FillRectangle(Brushes.SpringGreen, e.Bounds);
                // Draw a rectangle in blue around the selected item.
                //e.Graphics.DrawRectangle(Pens.Blue, e.Bounds);
                }
            // draw the string
            e.Graphics.DrawString(listString, e.Font, myBrush, e.Bounds, StringFormat.GenericDefault);
            }



private void dropDownListBox_MeasureItem(object sender, MeasureItemEventArgs e)
            {
            Font font = dropDownListBox.Font;
            SizeF stringSize = e.Graphics.MeasureString(font.Name, font);
            e.ItemHeight = (int)stringSize.Height;

            }