Solved: property evaluation failed on page.response.end()

I am receiving an error and not sure why. Here is the error:
{Property evaluation failed.}
System.Threading.ThreadAbortException: {Property evaluation failed.}
Data: Property evaluation failed.
HelpLink: Property evaluation failed.
InnerException: Property evaluation failed.
Message: Property evaluation failed.
Source: Property evaluation failed.
StackTrace: Property evaluation failed.
TargetSite: Property evaluation failed.

When I remove the Page.Response.End() everything works fine. Do I need it in there?

If File.Exists(imageFile) Then
                        Dim binStream As FileStream = File.OpenRead(imageFile)
                        Dim objImage As System.Drawing.Image = System.Drawing.Image.FromStream(binStream)
                        Page.Response.Write("<html><body style='font-size:10px;margin:0px;padding:0px;padding-left:4px;'>")
                        Page.Response.Write("<center><span style='color:blue;'>" + Path.GetExtension(imageFile).ToLower().Replace(".", "") + "</span>")
                        Page.Response.Write(" w: <b>" + objImage.Width.ToString() + "</b> h: <b>" + objImage.Height.ToString() + "</b>")
                        Page.Response.Write("</center></body></html>")
                        objImage.Dispose()
                        binStream.Close()
                        
                        Page.Response.End()
                    End If

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