how to set imge to combox listicon

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C#

Windows

application

actually i want to add different image and color to combobox arrow icon,so what can i do ,i was tried this specific code but problem not solved

Mycode:

public sealed class ColorSelector : ComboBox
{
public ColorSelector()
{
DrawMode = DrawMode.OwnerDrawFixed;
DropDownStyle = ComboBoxStyle.DropDownList;
}

protected override void OnDrawItem(DrawItemEventArgs e)
{
e.DrawBackground();

e.DrawFocusRectangle();

if (e.Index >= 0 && e.Index < Items.Count)
{
DropDownItem item = (DropDownItem)Items[e.Index];

e.Graphics.DrawImage(item.Image, e.Bounds.Left, e.Bounds.Top);

e.Graphics.DrawString(item.Value, e.Font, new SolidBrush(e.ForeColor), e.Bounds.Left + item.Image.Width, e.Bounds.Top + 2);
}

base.OnDrawItem(e);
}
}
public sealed class DropDownItem
{
public string Value { get; set; }

public Image Image { get; set; }

public DropDownItem()
: this("")
{ }

public DropDownItem(string val)
{
Value = val;
Image = new Bitmap(16, 16);
using (Graphics g = Graphics.FromImage(Image))
{
using (Brush b = new SolidBrush(Color.FromName(val)))
{
g.DrawRectangle(Pens.White, 0, 0, Image.Width, Image.Height);
g.FillRectangle(b, 1, 1, Image.Width - 1, Image.Height - 1);
}
}
}

public override string ToString()
{
return Value;
}
}