Application url locally could not be found

Question

I am trying to develop simple Registration form and login form. If a user forgot his/her password then he clicks on Forgot Password button and a forgot password page opens where he will provide his/her email address and a password reset link is send to his/her mail address.Then he/she will click on the reset password and he will redirected to changePassword.aspx page but i am stuck with here. When i click on reset password link i got the following error. Please find images in attachments

Here is the code for password reset

protected void SetPasswordResetEmail(string UserName, string ToEmail, string UniqueId)
    {
        MailMessage message = new MailMessage("email@gmail.com", ToEmail);
        StringBuilder sbEmailBody = new StringBuilder();
        sbEmailBody.Append("Dear" + UserName + ",<br/><br/>");
        sbEmailBody.Append("Please click the following link to reset your password");
        sbEmailBody.Append("<br/>");         
        sbEmailBody.Append("http://localhost/BootstrapLogin/ChangePassword.aspx?uid=" + UniqueId);
        message.IsBodyHtml = true;
        message.Body = sbEmailBody.ToString();
        message.Subject = "Reset Your Password";
        SmtpClient smtp = new SmtpClient();
        smtp.Host = "smtp.gmail.com";
        smtp.EnableSsl = true;
        NetworkCredential NetworkCred = new NetworkCredential("email@gmail.com", "password");
        smtp.UseDefaultCredentials = true;
        smtp.Credentials = NetworkCred;
        smtp.Port = 587;
        smtp.Send(message);
    }

Answer 1

option 1

sbEmailBody.Append("http://localhost/BootstrapLogin/ChangePassword.aspx?uid=" + UniqueId);
// http://localhost:8080 change 8080 to your application port number 

option 2

Go to your project-> properties -> Web -> Server

Then give specific port number

Answer 2

Project -> Project_name Properties... -> Web

Here you can see/change IIS port binding.

So in your url there should be this port number. Something like: http://localhost/55555/BootstrapLogin...