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我有這樣的代碼正在工作就好了前一段時間，但現在無法發送生成的密碼，SMTP不發送電子郵件ASP.NET
這就是我得到「錯誤在發送您的憑據發生。請聯繫ICT辦公室管理員「
有什麼想法？
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Net;
using System.Net.Mail;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class staff_Forgot_Password : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void BtnLogin_Click(object sender, EventArgs e)
{
string email = string.Empty;
string userno = TxtUsername.Text.Trim().Replace("'", "");
if (string.IsNullOrEmpty(userno))
{
LblError.Text = "Username should not be empty";
return;
}
#region generate random password
Random rand = new Random();
Random randAlpha = new Random();
int newpassint = rand.Next(10000, 99999);
int alphabetPosition = randAlpha.Next(1, 26);
bool isCap = (alphabetPosition % 2 == 0 ? true : false);
string theAlphabet = GetTheAlphabet(alphabetPosition, isCap);
alphabetPosition = randAlpha.Next(1, 26);
isCap = (alphabetPosition % 2 == 0 ? true : false);
theAlphabet += GetTheAlphabet(alphabetPosition, isCap);
alphabetPosition = randAlpha.Next(1, 26);
isCap = (alphabetPosition % 2 == 0 ? true : false);
theAlphabet += GetTheAlphabet(alphabetPosition, isCap);
alphabetPosition = randAlpha.Next(1, 26);
isCap = (alphabetPosition % 2 == 0 ? true : false);
theAlphabet += GetTheAlphabet(alphabetPosition, isCap);
//string newpass = theAlphabet + "#" + newpassint.ToString() + "?" + alphabetPosition.ToString() + "@";
string newpass = theAlphabet + "#" + newpassint.ToString() + "@" + alphabetPosition.ToString();
#endregion generate random password
email = GetStaffEmail(userno);
bool ok = ResetPassword(userno, newpass);
if (ok)
{
const string subject = "STAFF SELF SERVICE PORTAL CREDENTIALS";
string msg = "Staff portal credentials reset:<br>New password is <b>" + newpass + "</b>";
if (SendEmailAlert(msg, email, subject))
{
Message("A new password has been generated and sent to your Email.");
return;
}
else
{
Message("An error occured while sending you the credentials.Please contact the ICT office administrator.");
}
}
else
{
LblError.Text = "Password reset failed, please recheck your staff number and/or consult your administrator";
}
}
protected string GetStaffEmail(string username)
{
string rval = string.Empty;
SqlConnection connToNAV = null;
try
{
using (connToNAV = new SqlConnection(MyComponents.ConnectionString))
{
using (SqlCommand cmd = new SqlCommand())
{
string sqlStmt = "SELECT [Company E-Mail] FROM [" + MyComponents.Company_Name +
" $Staff-table] WHERE [No_] = @username";
cmd.CommandText = sqlStmt;
cmd.Connection = connToNAV;
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddWithValue("@username", username.Trim());
if (connToNAV.State != ConnectionState.Open)
{
connToNAV.Open();
}
using (SqlDataReader cmdReader = cmd.ExecuteReader())
{
if (cmdReader.HasRows == true)
{
cmdReader.Read();
rval = cmdReader["Company E-Mail"].ToString();
}
else
{
LblError.Text = "Warning!, password reset failed! contact your administrator!";
}
cmdReader.Close();
}
}
}
}
catch (Exception ex)
{
ex.Data.Clear();
}
finally
{
connToNAV.Close();
}
return rval;
}
private string GetTheAlphabet(int alphabetPosition, bool isCap)
{
string rval = string.Empty;
switch (alphabetPosition)
{
case 1: rval = "A"; break;
case 2: rval = "B"; break;
case 3: rval = "C"; break;
case 4: rval = "D"; break;
case 5: rval = "E"; break;
case 6: rval = "F"; break;
case 7: rval = "G"; break;
case 8: rval = "H"; break;
case 9: rval = "I"; break;
case 10: rval = "J"; break;
case 11: rval = "K"; break;
case 12: rval = "L"; break;
case 13: rval = "M"; break;
case 14: rval = "N"; break;
case 15: rval = "O"; break;
case 16: rval = "P"; break;
case 17: rval = "Q"; break;
case 18: rval = "R"; break;
case 19: rval = "S"; break;
case 20: rval = "T"; break;
case 21: rval = "U"; break;
case 22: rval = "V"; break;
case 23: rval = "W"; break;
case 24: rval = "X"; break;
case 25: rval = "Y"; break;
default: rval = "Z"; break;
}
return isCap ? rval : rval.ToLower();
}
public static bool SendEmailAlert(string body, string recepient, string subject)
{
Boolean x = false;
string a = "";
try
{
string SMTPHost = "smtp.gmail.com";
string fromAddress = "[email protected]";
string toAddress = recepient;
System.Net.Mail.MailMessage mail_ = new System.Net.Mail.MailMessage();
mail_.To.Add(toAddress);
mail_.Subject = subject;
mail_.From = new System.Net.Mail.MailAddress(fromAddress);
mail_.Body = body;
mail_.IsBodyHtml = true;
var smtp = new SmtpClient("smtp.gmail.com", 465)
{
Credentials = new NetworkCredential("[email protected]", "mypassword"),
EnableSsl = true
};
smtp.Send(mail_);
x = true;
a = "Sent";
}
catch (Exception ex2)
{
a = ex2.ToString();
ex2.Data.Clear();
}
return x;
}
private bool ResetPassword(string userno, string newpass)
{
bool rval = false;
SqlConnection connToNAV = null;
try
{
using (connToNAV = new SqlConnection(MyComponents.ConnectionString))
{
using (SqlCommand cmd = new SqlCommand())
{
string sqlStmt = "UPDATE [" + MyComponents.Company_Name + " $Staff-table] ";
sqlStmt += "SET [Portal Password] = @Portal_Password,[Changed Password] = 1 ";
sqlStmt += "WHERE (1=1) AND ([No_] = @StaffNo) ";
if (connToNAV.State != ConnectionState.Open)
{
connToNAV.Open();
}
cmd.CommandText = sqlStmt;
cmd.Connection = connToNAV;
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddWithValue("@Portal_Password", newpass);
cmd.Parameters.AddWithValue("@StaffNo", userno);
int rst = cmd.ExecuteNonQuery();
if (rst == 1)
{
rval = true;
}
}
}
}
catch (Exception ex)
{
ex.Data.Clear();
}
finally
{
connToNAV.Close();
}
return rval;
}
public void Message(string strMsg)
{
string strScript = null;
strScript = "<script>";
strScript = strScript + "alert('" + strMsg + "');";
strScript = strScript + "</script>";
Page.RegisterStartupScript("ClientScript", strScript.ToString());
}
}using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Net;
using System.Net.Mail;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class staff_Forgot_Password : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void BtnLogin_Click(object sender, EventArgs e)
{
string email = string.Empty;
string userno = TxtUsername.Text.Trim().Replace("'", "");
if (string.IsNullOrEmpty(userno))
{
LblError.Text = "Username should not be empty";
return;
}
#region generate random password
Random rand = new Random();
Random randAlpha = new Random();
int newpassint = rand.Next(10000, 99999);
int alphabetPosition = randAlpha.Next(1, 26);
bool isCap = (alphabetPosition % 2 == 0 ? true : false);
string theAlphabet = GetTheAlphabet(alphabetPosition, isCap);
alphabetPosition = randAlpha.Next(1, 26);
isCap = (alphabetPosition % 2 == 0 ? true : false);
theAlphabet += GetTheAlphabet(alphabetPosition, isCap);
alphabetPosition = randAlpha.Next(1, 26);
isCap = (alphabetPosition % 2 == 0 ? true : false);
theAlphabet += GetTheAlphabet(alphabetPosition, isCap);
alphabetPosition = randAlpha.Next(1, 26);
isCap = (alphabetPosition % 2 == 0 ? true : false);
theAlphabet += GetTheAlphabet(alphabetPosition, isCap);
//string newpass = theAlphabet + "#" + newpassint.ToString() + "?" + alphabetPosition.ToString() + "@";
string newpass = theAlphabet + "#" + newpassint.ToString() + "@" + alphabetPosition.ToString();
#endregion generate random password
email = GetStaffEmail(userno);
bool ok = ResetPassword(userno, newpass);
if (ok)
{
const string subject = "STAFF SELF SERVICE PORTAL CREDENTIALS";
string msg = "Staff portal credentials reset:<br>New password is <b>" + newpass + "</b>";
if (SendEmailAlert(msg, email, subject))
{
Message("A new password has been generated and sent to your Email.");
return;
}
else
{
Message("An error occured while sending you the credentials.Please contact the ICT office administrator.");
}
}
else
{
LblError.Text = "Password reset failed, please recheck your staff number and/or consult your administrator";
}
}
protected string GetStaffEmail(string username)
{
string rval = string.Empty;
SqlConnection connToNAV = null;
try
{
using (connToNAV = new SqlConnection(MyComponents.ConnectionString))
{
using (SqlCommand cmd = new SqlCommand())
{
string sqlStmt = "SELECT [Company E-Mail] FROM [" + MyComponents.Company_Name +
" $Staff-table] WHERE [No_] = @username";
cmd.CommandText = sqlStmt;
cmd.Connection = connToNAV;
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddWithValue("@username", username.Trim());
if (connToNAV.State != ConnectionState.Open)
{
connToNAV.Open();
}
using (SqlDataReader cmdReader = cmd.ExecuteReader())
{
if (cmdReader.HasRows == true)
{
cmdReader.Read();
rval = cmdReader["Company E-Mail"].ToString();
}
else
{
LblError.Text = "Warning!, password reset failed! contact your administrator!";
}
cmdReader.Close();
}
}
}
}
catch (Exception ex)
{
ex.Data.Clear();
}
finally
{
connToNAV.Close();
}
return rval;
}
private string GetTheAlphabet(int alphabetPosition, bool isCap)
{
string rval = string.Empty;
switch (alphabetPosition)
{
case 1: rval = "A"; break;
case 2: rval = "B"; break;
case 3: rval = "C"; break;
case 4: rval = "D"; break;
case 5: rval = "E"; break;
case 6: rval = "F"; break;
case 7: rval = "G"; break;
case 8: rval = "H"; break;
case 9: rval = "I"; break;
case 10: rval = "J"; break;
case 11: rval = "K"; break;
case 12: rval = "L"; break;
case 13: rval = "M"; break;
case 14: rval = "N"; break;
case 15: rval = "O"; break;
case 16: rval = "P"; break;
case 17: rval = "Q"; break;
case 18: rval = "R"; break;
case 19: rval = "S"; break;
case 20: rval = "T"; break;
case 21: rval = "U"; break;
case 22: rval = "V"; break;
case 23: rval = "W"; break;
case 24: rval = "X"; break;
case 25: rval = "Y"; break;
default: rval = "Z"; break;
}
return isCap ? rval : rval.ToLower();
}
public static bool SendEmailAlert(string body, string recepient, string subject)
{
Boolean x = false;
string a = "";
try
{
string SMTPHost = "smtp.gmail.com";
string fromAddress = "[email protected]";
string toAddress = recepient;
System.Net.Mail.MailMessage mail_ = new System.Net.Mail.MailMessage();
mail_.To.Add(toAddress);
mail_.Subject = subject;
mail_.From = new System.Net.Mail.MailAddress(fromAddress);
mail_.Body = body;
mail_.IsBodyHtml = true;
var smtp = new SmtpClient("smtp.gmail.com", 465)
{
Credentials = new NetworkCredential("[email protected]", "mypassword"),
EnableSsl = true
};
smtp.Send(mail_);
x = true;
a = "Sent";
}
catch (Exception ex2)
{
a = ex2.ToString();
ex2.Data.Clear();
}
return x;
}
private bool ResetPassword(string userno, string newpass)
{
bool rval = false;
SqlConnection connToNAV = null;
try
{
using (connToNAV = new SqlConnection(MyComponents.ConnectionString))
{
using (SqlCommand cmd = new SqlCommand())
{
string sqlStmt = "UPDATE [" + MyComponents.Company_Name + " $Staff-table] ";
sqlStmt += "SET [Portal Password] = @Portal_Password,[Changed Password] = 1 ";
sqlStmt += "WHERE (1=1) AND ([No_] = @StaffNo) ";
if (connToNAV.State != ConnectionState.Open)
{
connToNAV.Open();
}
cmd.CommandText = sqlStmt;
cmd.Connection = connToNAV;
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddWithValue("@Portal_Password", newpass);
cmd.Parameters.AddWithValue("@StaffNo", userno);
int rst = cmd.ExecuteNonQuery();
if (rst == 1)
{
rval = true;
}
}
}
}
catch (Exception ex)
{
ex.Data.Clear();
}
finally
{
connToNAV.Close();
}
return rval;
}
public void Message(string strMsg)
{
string strScript = null;
strScript = "<script>";
strScript = strScript + "alert('" + strMsg + "');";
strScript = strScript + "</script>";
Page.RegisterStartupScript("ClientScript", strScript.ToString());
}
}
在'SendEmailAlert'正在吞噬錯誤的'catch'塊。您需要將它記錄在某處，以便獲取更多信息。 –
[通過Gmail在.NET中發送電子郵件]可能的副本（http://stackoverflow.com/questions/32260/sending-email-in-net-through-gmail） – VDWWD
原因可能是你沒有把'UseDefaultCredentials = false '。確保在分配網絡憑證之前設置它 –