Forgot Password By Email Page Code In Asp.Net

This Example explains how to Create Forgot Password By Email Page Code In Asp.Net Using C# And VB.NET.

I have placed one textbox and button on the ForgotPassword.aspx page to send mail to email id stored in database.

You can also send Reset Password Link instead of sending Username password in the email.

HTML SOURCE OF FORGOT PASSWORD PAGE

---

   1:  <form id="Form1" runat="server">

   2:  <div>

   3:  <fieldset>

   4:  <legend>Forgot Password</legend> 

   5:  <asp:Label ID="lblEmail" runat="server" Text="Email Address: "/>

   6:  <asp:TextBox ID="txtEmail" runat="server"/>

   7:   

   8:  <asp:RequiredFieldValidator ID="RV1" runat="server" 

   9:                              ControlToValidate="txtEmail" 

  10:                              ErrorMessage="Please Enter EmailID" 

  11:                              SetFocusOnError="True">*

  12:  </asp:RequiredFieldValidator>

  13:   

  14:  <asp:Button ID="btnPass" runat="server" Text="Submit" 

  15:                           onclick="btnPass_Click"/>

  16:   

  17:  <asp:ValidationSummary ID="ValidationSummary1" 

  18:                         runat="server" CssClass="error"/>

  19:                         

  20:  <asp:Label ID="lblMessage" runat="server" Text=""/>

  21:  </fieldset>

  22:  </div>

  23:  </form>

Write following code in Click Event of Button to retrieve username and password associated with EmailID provided by user from database and send the information to this email id.

C# CODE

---

show source

01using System;

02using System.Data.SqlClient;

03using System.Configuration;

04using System.Data;

05using System.Net.Mail;

06 

07protected void btnPass_Click(object sender, EventArgs e)

08    {

09        //Create Connection String And SQL Statement

10        string strConnection = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;

11        string strSelect = "SELECT UserName,Password FROM Users WHERE Email = @Email";

12 

13        SqlConnection connection = new SqlConnection(strConnection);

14        SqlCommand command = new SqlCommand();

15        command.Connection = connection;

16        command.CommandType = CommandType.Text;

17        command.CommandText = strSelect;

18 

19        SqlParameter email = new SqlParameter("@Email", SqlDbType.VarChar, 50);

20        email.Value = txtEmail.Text.Trim().ToString();

21        command.Parameters.Add(email);

22 

23        //Create Dataset to store results and DataAdapter to fill Dataset

24        DataSet dsPwd = new DataSet();

25        SqlDataAdapter dAdapter = new SqlDataAdapter(command);

26        connection.Open();

27        dAdapter.Fill(dsPwd);

28        connection.Close();

29        if(dsPwd.Tables[0].Rows.Count > 0 )

30        {

31            MailMessage loginInfo = new MailMessage();

32            loginInfo.To.Add(txtEmail.Text.ToString());

33            loginInfo.From = new MailAddress("YourID@gmail.com");

34            loginInfo.Subject = "Forgot Password Information";

35 

36            loginInfo.Body = "Username: " + dsPwd.Tables[0].Rows[0]["UserName"] + "<br><br>Password: " + dsPwd.Tables[0].Rows[0]["Password"] + "<br><br>";

37            loginInfo.IsBodyHtml = true;

38            SmtpClient smtp = new SmtpClient();

39            smtp.Host = "smtp.gmail.com";

40            smtp.Port = 587;

41            smtp.EnableSsl = true;

42            smtp.Credentials = new System.Net.NetworkCredential("YourGmailID@gmail.com", "YourGmailPassword");

43            smtp.Send(loginInfo);

44            lblMessage.Text = "Password is sent to you email id,you can now <a href="Login.aspx">Login</a>";

45        }

46        else

47        {

48            lblMessage.Text = "Email Address Not Registered";

49        }

50 

51    }

VB.NET

---

show source

01Imports System.Data.SqlClient

02Imports System.Configuration

03Imports System.Data

04Imports System.Net.Mail

05 

06Protected Sub btnPass_Click(sender As Object, e As EventArgs)

07  'Create Connection String And SQL Statement

08  Dim strConnection As String = ConfigurationManager.ConnectionStrings("ConnectionString").ConnectionString

09  Dim strSelect As String = "SELECT UserName,Password FROM Users WHERE Email = @Email"

10 

11  Dim connection As New SqlConnection(strConnection)

12  Dim command As New SqlCommand()

13  command.Connection = connection

14  command.CommandType = CommandType.Text

15  command.CommandText = strSelect

16 

17  Dim email As New SqlParameter("@Email", SqlDbType.VarChar, 50)

18  email.Value = txtEmail.Text.Trim().ToString()

19  command.Parameters.Add(email)

20 

21  'Create Dataset to store results and DataAdapter to fill Dataset

22  Dim dsPwd As New DataSet()

23  Dim dAdapter As New SqlDataAdapter(command)

24  connection.Open()

25  dAdapter.Fill(dsPwd)

26  connection.Close()

27  If dsPwd.Tables(0).Rows.Count > 0 Then

28   Dim loginInfo As New MailMessage()

29   loginInfo.[To].Add(txtEmail.Text.ToString())

30   loginInfo.From = New MailAddress("YourID@gmail.com")

31   loginInfo.Subject = "Forgot Password Information"

32 

33   loginInfo.Body = "Username: " & Convert.ToString(dsPwd.Tables(0).Rows(0)("UserName")) & "<br><br>Password: " & Convert.ToString(dsPwd.Tables(0).Rows(0)("Password")) & "<br><br>"

34   loginInfo.IsBodyHtml = True

35   Dim smtp As New SmtpClient()

36   smtp.Host = "smtp.gmail.com"

37   smtp.Port = 587

38   smtp.EnableSsl = True

39   smtp.Credentials = New System.Net.NetworkCredential("YourGmailID@gmail.com", "YourGmailPassword")

40   smtp.Send(loginInfo)

41   lblMessage.Text = "Password is sent to you email id,you can now <a href="Login.aspx">Login</a>"

42  Else

43   lblMessage.Text = "Email Address Not Registered"

44  End If

45 

46End Sub

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