How to custom draw the background of the bar in mainFrameBarManager?

this.bar1.DrawBackground += new PaintEventHandler(bar1_DrawBackground);
void bar1_DrawBackground(object sender, PaintEventArgs e)
{
   Bar bar = (Bar)sender;
   Image image1 = System.Drawing.Image.FromFile(@"..\..\Image\PINELUMB.JPG");
   TextureBrush texture = new TextureBrush(image1);
   //Bar edge background image
   e.Graphics.FillRectangle(texture, e.ClipRectangle);
}

AddHandler Bar1.DrawBackground, AddressOf bar1_DrawBackground
Private Sub bar1_DrawBackground(ByVal sender As Object, ByVal args As PaintEventArgs)
    Dim bar As Bar = CType(sender, Bar)
    Dim image1 As Image = System.Drawing.Image.FromFile("..\..\Images\PINELUMB.JPG")
    Dim texture As TextureBrush = New TextureBrush(image1)
    'Bar edge background image
    args.Graphics.FillRectangle(texture, args.ClipRectangle)
End Sub