How to attach a random number with an email

Punita

14y3.6k.NET

Hello Sir,

I want to send an email with the confirmation code when the user first registers to the site. How to attach random number with email? How to compare it when user enters sent code???plz reply....i m new to asp.net.

13 Replies

Know the answer? Post it — somebody with the same question will find it here.

Nitesh Kejriwal14y ago
Accepted answer
Punita,

For starting user session, you can do something like below -

On Login Page
if(loginSuccess)
{
        Session["Admin"] = true;
}
else
{
        Session["Admin"] = false;
}

On Logout Page
if(logOut)
{
        Session["Admin"] = false;
}

ON all pages check below -
if(Session["Admin"] = true)
{
        //Show Page Content
}
Nitiesh Bargav11y ago
can u tell me how to do it in wcf service????
Punita14y ago
Hello Sir,

How to use ASP.NET Configuration for admin section....plz give me detail info how to use it.,
Punita14y ago
Hello sir,

How to start the session when the user logs in? How to end it??
How to get the active user detail??
plz reply me.....
Nitesh Kejriwal14y ago
Glad you're able to run it now:)
Punita14y ago
Humm got it! Thank u sir:)
Nitesh Kejriwal14y ago
Not really! You can run the application and send the email. From email, when you'll click it will opena link something like "http://localhost:1234/Continue.aspx?id=1&code=12345" and since your application is running, it will find the page to run :)
Punita14y ago
Thank u Sir,

For this I have to host my site na?? I have not hosted my site, then??
Nitesh Kejriwal14y ago
Few points in the code below --

1. I do not see any place where you're saving the user Info to database.
2. I understand that you are having the Confirm and Continue buttons on the same page where user registers.
3. I am commenting few sections in code below. Please read for better implementation.

protected void btn_Confirm_Click(object sender, EventArgs e)
{
try
{
if (!txt_UserName.Text.Equals("") || txt_Email.Text.Equals("" ) || txt_ConfirmEmail.Text.Equals(""))
{
if (txt_Email.Text.Equals(txt_ConfirmEmail.Text))
{
Guid g = Guid.NewGuid();
Globals.strPassword = Guid.NewGuid().ToString("N").Substring(0, 12);
MailMessage mail = new MailMessage();
mail.To.Add(txt_Email.Text);
mail.Subject = "About the confirmation of your registration.";
string Body = "Welcome to our site! " +
txt_UserName.Text + " ,this is your confirmation code: " + Globals.strPassword;

//In the above line, you are sending just the GUID to the user as confirmation code. No problems. But you are storing this GUID as a global variable that may be either static or shared by every object in your ASP.Net page. Thus, if 2 users are registering on your page, you're not sure which confirmation code belongs to which user. Therefore, as I mentioned earlier, please store the user info in database as well as this Confirmation code with the userID generated by database. Instead of sending the ConfirmationCode, send the below line :
string Body = "Welcome to our site! " + txt_UserName.Text + " ,click on the below link ot confirm

mail.Body = Body;
//Attachment at = new Attachment("~/TextFile.txt");
//mail.Attachments.Add(at);
mail.IsBodyHtml = true;

SmtpClient smtp = new SmtpClient();
smtp.EnableSsl = true;
smtp.Send(mail);
lbl_Error.Text = "Mail Send...";
txt_ConfirmationCode.Enabled = true;
btn_Continue.Enabled = true;
}
else
{
lbl_Error.Text = "Email mismatch!";
txt_ConfirmEmail.Focus();
}

}
else
{
lbl_Error.Text = "All fields are complusory.";
txt_UserName.Focus();
}
}
catch (Exception ex)
{
lbl_Error.Text = ex.Message;
}
}

Put the below code in Page_load on a different page (Confirm.aspx) as present in link. The page name you are sending in link and this page name should match.

protected void Page_load(object sender, EventArgs e)
{
        // Here get the UserID of the user and the confirmation code
        var code=Request.QueryString["code"];
var userID = Request.QueryString["id"];
        //Validate from DB here with these details.
if (SUCCESS FROM DB)
{
Response.Redirect("~/UserDetail.aspx");
}
else
{
lbl_Information.Text = "Code does not match! Try again.";
}
}
Punita14y ago
Hello Sir,

I am trying to solve this thing in way like this, I am sending the user random number by mail and user have to type that code in the form. I want the user to get registered(entry in database) when the code entered by him get matched else not. For that I have to check the code in the same page...but i want to check it in the next page. How to handle the data entry? I am developing it in 3 tier approach.

public partial class NewUser : System.Web.UI.Page
{
public static class Globals
{

public static string strPassword = "";

}
protected void Page_Load(object sender, EventArgs e)
{

}
protected void btn_Confirm_Click(object sender, EventArgs e)
{
try
{
if (!txt_UserName.Text.Equals("") || txt_Email.Text.Equals("" ) || txt_ConfirmEmail.Text.Equals(""))
{
if (txt_Email.Text.Equals(txt_ConfirmEmail.Text))
{
Guid g = Guid.NewGuid();
Globals.strPassword = Guid.NewGuid().ToString("N").Substring(0, 12);
MailMessage mail = new MailMessage();
mail.To.Add(txt_Email.Text);
mail.Subject = "About the confirmation of your registration.";
string Body = "Welcome to our site! " +
txt_UserName.Text + " ,this is your confirmation code: " + Globals.strPassword;
mail.Body = Body;
//Attachment at = new Attachment("~/TextFile.txt");
//mail.Attachments.Add(at);
mail.IsBodyHtml = true;

SmtpClient smtp = new SmtpClient();
smtp.EnableSsl = true;
smtp.Send(mail);
lbl_Error.Text = "Mail Send...";
txt_ConfirmationCode.Enabled = true;
btn_Continue.Enabled = true;
}
else
{
lbl_Error.Text = "Email mismatch!";
txt_ConfirmEmail.Focus();
}

}
else
{
lbl_Error.Text = "All fields are complusory.";
txt_UserName.Focus();
}
}
catch (Exception ex)
{
lbl_Error.Text = ex.Message;
}
}
protected void btn_Cancel_Click(object sender, EventArgs e)
{
Response.Redirect("~/Login.aspx");
}
protected void btn_Continue_Click(object sender, EventArgs e)
{
var code=txt_ConfirmationCode.Text.Trim();

if (code.Equals(Globals.strPassword))
{
Response.Redirect("~/UserDetail.aspx");
}
else
{
lbl_Information.Text = "Code does not match! Try again.";
txt_ConfirmationCode.Focus();
}
}
}

By ur way i m not getting the thing how to manage the query string and all.....:)
Suggest me the right way...
Nitesh Kejriwal14y ago
Let me know which step are you stuck with? Also, post some code if possible.
Punita14y ago
Hello Sir,

Thanks for ur reply, but i m not getting the things properly plz explain me in detail....
Nitesh Kejriwal14y ago
For this you will need to do some Db handling. Follow the following steps - 1. Create new table in Db with 2 fields (UserID, RandomNumber) 2. Create a new page that will validate the user with the link.(For ex - step2.php/step2.aspx) 3. Whenever user registers, add a new record in Db with a random number and created UserID. 4. Send email to user with the same random number generated as a query string. For ex - http://www.abc.com/step2.php?q=random_numer 5. In Step2.php page, get the query string and validate the user from the table created in step 1. 6. If it validates, delete this record and mark the user as Active. HOpe this helps. For more questions, please revert!