Draw a bitmap image in asp.net in vb.net

Draw a bitmap image in vb.net.
Add this namespace

Imports System.Drawing
Imports System.Drawing.Imaging

Write this code on ASPX.VB page

Protected Sub Page_Load(sender As Object, e As EventArgs)
	Dim bitmapimg As New Bitmap(120, 120, PixelFormat.Format32bppArgb)
	Dim grph As Graphics = Graphics.FromImage(bitmapimg)
	Dim br As New SolidBrush(Color.Green)
	grph.FillEllipse(br, 4, 4, 110, 110)
	Response.ContentType = "image/gif"
	bitmapimg.Save(Response.OutputStream, ImageFormat.Gif)
	bitmapimg.Dispose()
End Sub