我已经编写了发送电子邮件的代码，并且代码执行成功后，收件箱中没有收到邮件。请帮助我并更正代码;我的错误在哪里，或者为什么收件箱中没有收到邮件？
这是我的代码，请告诉我这是什么问题。
我正在处理忘记密码和用户名发送给输入电子邮件ID的用户的项目。
protected void Button2_Click(object sender, EventArgs e)
{
string email = TextBox1.Text;
SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=regester;Integrated Security=True");
string command = "select id,password,email from reg ";
SqlCommand sqlcmd = new SqlCommand(command, con);
//sqlcmd.Parameters["@Email"].Value = email;
//sqlcmd.Parameters.Add("@Email", email);
con.Open();
if (con.State == ConnectionState.Open)
{
SqlDataReader dtr = sqlcmd.ExecuteReader();
while (dtr.Read())
{
if (dtr[2].ToString().Equals(TextBox1.Text))
{
MailMessage mail = new MailMessage();
mail.To.Add(dtr[2].ToString());
mail.From = new MailAddress("mian722@hotmail.com");
mail.Subject = "Your userId and Password";
mail.Body = "Your<br/> UserId:<b>" + dtr[0].ToString() + "</b><br/>" + "Password:<b>" + dtr[1].ToString() + "</b>";
mail.IsBodyHtml = true;
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.gmail.com";
smtp.Port = 587;
smtp.Credentials = new System.Net.NetworkCredential("your id", "your password");
smtp.EnableSsl = true;
//smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
//smtp.EnableSsl = true;
//smtp.UseDefaultCredentials = true;
smtp.EnableSsl = true; //Gmail works on Server Secured Layer
try
{
smtp.Send(mail);
}
catch (Exception ex)
{
}
//smtp.Send(mail);
Label1.Text = "check your mailbox for user iD and Password";
string javaScript = "<script language=JavaScript>\n" + "alert('User Id and password send to Your mail box');\n" + "</script>";
RegisterStartupScript("xyz", javaScript);
break;
}
else
{
Label1.Text = "Email Id not valid";
}
}
}
}
}
答案 0 :(得分：1)
此行会丢弃Send引发的所有异常。删除try和catch，进行某种日志记录，甚至只是在其上放置一个断点。然后，希望你可以告诉我们例外是什么。
try
{
smtp.Send(mail);
}
catch (Exception ex)
{
}
答案 1 :(得分：0)
您可能希望在错误处理方面更具体，至少在找到问题之前
protected void Button2_Click(object sender, EventArgs e)
{
try
{
string email = TextBox1.Text;
SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=regester;Integrated Security=True");
string command = "select id,password,email from reg ";
SqlCommand sqlcmd = new SqlCommand(command, con);
//sqlcmd.Parameters["@Email"].Value = email;
//sqlcmd.Parameters.Add("@Email", email);
con.Open();
if (con.State == ConnectionState.Open)
{
SqlDataReader dtr = sqlcmd.ExecuteReader();
while (dtr.Read())
{
if (dtr[2].ToString().Equals(TextBox1.Text))
{
MailMessage mail = new MailMessage();
mail.To.Add(dtr[2].ToString());
mail.From = new MailAddress("mian722@hotmail.com");
mail.Subject = "Your userId and Password";
mail.Body = "Your<br/> UserId:<b>" + dtr[0].ToString() + "</b><br/>" + "Password:<b>" + dtr[1].ToString() + "</b>";
mail.IsBodyHtml = true;
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.gmail.com";
smtp.Port = 587;
smtp.Credentials = new System.Net.NetworkCredential("your id", "your password");
smtp.EnableSsl = true;
//smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
//smtp.EnableSsl = true;
//smtp.UseDefaultCredentials = true;
smtp.EnableSsl = true; //Gmail works on Server Secured Layer
try
{
smtp.Send(mail);
}
catch (SmtpException ex)
{
string javaScript = "<script language=JavaScript>\n" + "alert('SMTP mail exception: " + Microsoft.Security.Application.Encoder.HTMLEncode(ex.Message) + "');\n" + "</script>";
RegisterStartupScript("xyz", javaScript);
// add logging here
break;
}
catch (Exception ex)
{
string javaScript = "<script language=JavaScript>\n" + "alert('A general exception sending mail: " + Microsoft.Security.Application.Encoder.HTMLEncode(ex.Message) + "');\n" + "</script>";
RegisterStartupScript("xyz", javaScript);
// add logging here
break;
}
Label1.Text = "check your mailbox for user iD and Password";
string javaScript = "<script language=JavaScript>\n" + "alert('User Id and password send to Your mail box');\n" + "</script>";
RegisterStartupScript("xyz", javaScript);
break;
}
else
{
Label1.Text = "Email Id not valid";
}
}
}
}
} catch(SqlException sqlexcept)
{
string javaScript = "<script language=JavaScript>\n" + "alert('SQL exception: '" + Microsoft.Security.Application.Encoder.HTMLEncode(sqlexcept.Message) ");\n" + "</script>";
RegisterStartupScript("xyz", javaScript);
// add logging here
}
} catch(Exception except)
{
string javaScript = "<script language=JavaScript>\n" + "alert('General mail creation exception: '" + Microsoft.Security.Application.Encoder.HTMLEncode(except.Message) ");\n" + "</script>";
RegisterStartupScript("xyz", javaScript);
// add logging here
}
}
邮件的web.config设置。
<system.net>
<mailSettings>
<smtp deliveryMethod="Network" from="myname@outlook.com">
<network host="smtp-mail.outlook.com" userName="myname@outlook.com" password="<passwordhere>" port="587" enableSsl="true"/>
</smtp>
</mailSettings>
</system.net>
答案 2 :(得分：-1)
string email = TextBox1.Text; SqlConnection con = new SqlConnection（ConfigurationManager.ConnectionStrings [＆＃34; regesterConnectionString＆＃34;] .ConnectionString）; // SqlConnection con = new SqlConnection（＆＃34; Data Source = .; Initial Catalog = regester; Integrated Security = True＆＃34;）; string命令=＆＃34;从reg＆＃34;中选择uname，密码，电子邮件; SqlCommand sqlcmd = new SqlCommand（command，con）; //sqlcmd.Parameters[" ;@Email"].Value = email; //sqlcmd.Parameters.Add("@Email" ;, email）; con.Open（）; if（con.State == ConnectionState.Open） { SqlDataReader dtr = sqlcmd.ExecuteReader（）;
while (dtr.Read())
{
if (dtr[2].ToString().Equals(TextBox1.Text))
{
MailMessage mail = new MailMessage();
mail.To.Add(dtr[2].ToString());
mail.From = new MailAddress("youremail@hotmail.com");
mail.Subject = "Your userId and Password";
mail.Body = "Your<br/> UserId:<b>" + dtr[0].ToString() + "</b><br/>" + "Password:<b>" + dtr[1].ToString() + "</b>";
mail.IsBodyHtml = true;
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.live.com";
smtp.Credentials = new System.Net.NetworkCredential("yyyyyyyy@hotmail.com", "xxxxxx");
// NetworkCredential.UserName = "";
smtp.EnableSsl = true;
smtp.Port = 25;
//TLS / SSL required = yes;
//smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
//smtp.EnableSsl = true;
//smtp.UseDefaultCredentials = true;
//smtp.EnableSsl = true; //Gmail works on Server Secured Layer
//try
//{
// smtp.Send(mail);
//}
//catch (Exception ex)
//{}
smtp.Send(mail);
Label1.Text = "check your mailbox for user iD and Password";
string javaScript = "<script language=JavaScript>\n" + "alert('User Id and password send to Your mail box');\n" + "</script>";
RegisterStartupScript("xyz", javaScript);
break;
}
else
{
Label1.Text = "Email Id not valid";
}
}