Problemer med at lave HTML mailformular
jeg har lavet nedenstående kode i VS2005 men når jeg kører den får jeg følgende fejl:+ InnerException {"Asynchronous operations are not allowed in this context. Page starting an asynchronous operation has to have the Async attribute set to true and an asynchronous operation can only be started on a page prior to PreRenderComplete event."} System.Exception {System.InvalidOperationException}
det skal siges at den er en weballication. Min kode er som følgende:
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.OleDb;
using System.Configuration;
using System.Text;
using System.Net;
using System.Net.Mail;
using System.Net.Mime;
public partial class Default2 : System.Web.UI.Page
{
static bool mailSent = false;
protected void Page_Load(object sender, EventArgs e)
{
}
public static void SendCompletedCallback(object sender, AsyncCompletedEventArgs e)
{
// Get the unique identifier for this asynchronous operation.
String token = (string)e.UserState;
if (e.Cancelled)
{
Console.WriteLine("[{0}] Send canceled.", token);
}
if (e.Error != null)
{
Console.WriteLine("[{0}] {1}", token, e.Error.ToString());
}
else
{
Console.WriteLine("Message sent.");
}
mailSent = true;
}
private void sendMail()
{
//HTML mail
//ArrayList skindArrayl = arrList;
StringBuilder strb = new StringBuilder();
strb = new StringBuilder();
SmtpClient client = new SmtpClient("smtp.galnet.dk");
MailAddress from = new MailAddress(txtEmail.Text);
MailAddress to = new MailAddress("mahyar@galnet.dk");
MailMessage message = new MailMessage(from, to);
message.Subject = "Henvendelse vedrører: " + CheckBoxList1.SelectedItem.Value;
client.SendCompleted += new SendCompletedEventHandler(SendCompletedCallback);
strb.Append("<html><body bgcolor = #fffaf0>");
strb.Append("<Center><h4>Email fra en besøgende</h4></Center><br><br>");
strb.Append("<Center><table border='0' width = 600 bgcolor = #ffcc99 ></Center>");
strb.Append(string.Format("<tr><td><b>Dato:</b></td><td>{0}</td></tr>", DateTime.Now.ToShortDateString()));
strb.Append(string.Format("<tr><td><b>Navn</td><td>{0}</td></tr>", txtKontaktperson.Text));
strb.Append(string.Format("<tr><td><b>Kontaktperson</td><td>{0}</td></tr>", txtKontaktperson.Text));
strb.Append(string.Format("<tr><td><b>Adresse</td><td>{0}</td></tr>", txtAdresse.Text));
strb.Append(string.Format("<tr><td><b>Postnr</td><td>{0}</td></tr>", txtPostnr.Text));
strb.Append(string.Format("<tr><td><b>By</td><td>{0}</td></tr>", txtBy.Text));
strb.Append(string.Format("<tr><td><b>Tlf</td><td>{0}</td></tr>", txtTlf.Text));
strb.Append(string.Format("<tr><td><b>Fax</td><td>{0}</td></tr>", txtFax.Text));
strb.Append(string.Format("<tr><td><b>Tlf</td><td>{0}</td></tr>", txtTlf.Text));
strb.Append(string.Format("<tr><td><b>Ønsket dato</td><td>{0}</td></tr>", txtDato.Text));
strb.Append(string.Format("<tr><td><b>Ønsket klokkeslet</td><td>{0}</td></tr>", txtKlokkeslet.Text));
strb.Append(string.Format("<tr><td><b>Fax</td><td>{0}</td></tr>", txtFax.Text));
strb.Append(string.Format("<tr><td><b>Kommentar</td><td>{0}</td></tr>", txtKommentar.Text));
strb.Append("</table><br>");
strb.Append("</body></html>");
message.Body = strb.ToString();
string userState = "test";
try
{
client.SendAsync(message, userState);
}
catch (Exception mailException)
{
Trace.Write(mailException.ToString());
}
}
