在以 ASP.NET 发送的电子邮件上显示确认消息
本文关键字:显示 确认 消息 电子邮件 ASP NET 在以 | 更新日期: 2023-09-27 18:36:16
在我的 ASP.NET 应用程序中,我无法向用户显示电子邮件发送失败或成功的确认消息。我使用以下代码发送电子邮件。怎么办?
public void SendMail()
{
try
{
login = new NetworkCredential("leavesmanagement@nworks.co", "password123456");
client = new SmtpClient("smtp.1and1.com");
client.Port = Convert.ToInt32(25);
client.EnableSsl = true;
client.Credentials = login;
msg = new MailMessage { From = new MailAddress("leaves@nworks.co", "nWorks Employee", Encoding.UTF8) };
msg.To.Add(new MailAddress(this.TextBoxEmail_Mobile.Text));
msg.Subject = "Recover Password For Your nWorks Leave Management Account";
msg.CC.Add(new MailAddress("dipak.a.akhade9192@gmail.com"));
// msg.CC.Add(new MailAddress("*************user mail id*************"));
string strBody = string.Empty;
Guid code = Guid.NewGuid();
strBody += "<html><head></head><body><p>Click the following link to recover your password.</p>";
strBody += Environment.NewLine;
strBody += "<form action='' method='POST' name='myForm1'><a href='http://localhost:19343/ResetPasswordForm.aspx?guid="+code.ToString()+"&userid="+getUser()+"'><b>Reset Password</b></form><br>";
strBody += "<br/>Thanks.</body></html>";
msg.Body = strBody;
msg.BodyEncoding = Encoding.UTF8;
msg.IsBodyHtml = true;
msg.Priority = MailPriority.Normal;
msg.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;
client.SendCompleted += new SendCompletedEventHandler(SendCompletedCallback);
string userstate = "sending.......";
client.SendAsync(msg, userstate);
string q2 = "select count(*) from RecoverPwdStatus where uid='"+getUser()+"';";
MySqlCommand cmd2 = new MySqlCommand(q2, conn);
conn.Open();
if ((long)(cmd2.ExecuteScalar() ?? 0) == 0)//user is not exist
{
conn.Close();
string q1 = "insert into RecoverPwdStatus values('" + getUser() + "','" + code.ToString() + "');";
MySqlCommand cmd1 = new MySqlCommand(q1, conn);
conn.Open();
MySqlDataReader rdr1 = cmd1.ExecuteReader();
conn.Close();
}
else
{
conn.Close();
string q3 = "update recoverpwdstatus set guidcode='"+code.ToString()+"' where uid='"+getUser()+"';";
MySqlCommand cmd3 = new MySqlCommand(q3, conn);
conn.Open();
MySqlDataReader rdr3 = cmd3.ExecuteReader();
conn.Close();
}
}
catch(Exception ex )
{
LabelMessage.Text = ex.Message;
}
}
显示确认消息的方法如下,我需要使用标签或消息框显示此消息。我只需要这里的解决方案。
private static void SendCompletedCallback(object sender, AsyncCompletedEventArgs e)
{
var result = new TaskCompletionSource<string>();
if (e.Cancelled)
result.SetResult("Sending Mail is Canceled...!!");
if (e.Error != null)
result.SetResult(string.Format("{0} {1}", e.UserState, e.Error));
else
result.SetResult("Email sent successfully.");
}
此调用
client.SendCompleted += new SendCompletedEventHandler(SendCompletedCallback);
client.SendAsync(msg, userstate);
是异步的,这意味着在页面被发送给用户之后可能会被调用并且您丢失了信息。它适用于应用程序,但不适用于网页和 Web 应用程序。