problem sending Email message includes a picture

  protected void sendImg_Click(object sender, EventArgs e)
{
string strMailContent = "Welcome new user";
string fromAddress = "[email protected]";
string toAddress = "[email protected]";
string contentId = "image1";
string path = Server.MapPath(@"img/LogoWeb.jpg"); // my logo is placed in images folder
MailMessage mailMessage = new MailMessage(fromAddress, toAddress);
mailMessage.Subject = "Welcome new User";


LinkedResource logo = new LinkedResource(path);
logo.ContentId = "companylogo";
// done HTML formatting in the next line to display my logo
AlternateView av1 = AlternateView.CreateAlternateViewFromString("
" + strMailContent, null, MediaTypeNames.Text.Html);
av1.LinkedResources.Add(logo);


mailMessage.AlternateViews.Add(av1);
// mailMessage.AlternateViews.Add(imageView);
mailMessage.IsBodyHtml = true;
SmtpClient smtp = new SmtpClient(); //use this if you are in the development server


smtp.Send(mailMessage);
}