protected void btnSubmit_Click(object sender, EventArgs e) { //initialize the random number generator Random r = new Random(); //set the new password from random number generator int newPw = r.Next(1, 100000); int result = 0; //initialze the result bool found = true; //initialize the boolean is true if (ddlCustOrg.SelectedItem.Text == "Customer") //when user choose to reset password for customer { //get the customer from database Customer c = CustomerDB.getACustomerByEmail(tbxEmail.Text); if (c != null) //if the customer is not null { c.Password = newPw.ToString(); //set the new password result = CustomerDB.updateCustomer(c); //update into customer database } else { found = false; //cannot find the customer from the database } } else if (ddlCustOrg.SelectedItem.Text == "Hotel Owner") //when user choose to reset password for hotel owner { Hotel h = HotelDB.getAHotelByEmail(tbxEmail.Text); //get the hotel owner from database if (h != null) //if the hotel is not null { h.Password = newPw.ToString(); //set the new password result = HotelDB.updateHotel(h); //update into hotel database } else { found = false; //cannot find the hotel owner from the database } } else if (ddlCustOrg.SelectedItem.Text == "Attraction Owner") //when user choose to reset password for attraction { Attraction a = AttractionDB.getAAttractionByEmail(tbxEmail.Text); //get the attraction owner from database if (a != null) //if the attraction is not null { //set the new password a.Password = newPw.ToString(); //update into attraction database result = AttractionDB.updateAttraction(a); } else { found = false; //canoot find the attraction from the database } } else if (ddlCustOrg.SelectedItem.Text == "Restaurant Owner") //when user choose to reset password for restaurant owner { Restaurant ra = RestaurantDB.getARestaurantByEmail(tbxEmail.Text); //get the restaurant owner from database if (ra != null) //if the restaurant is not null { //set the new password ra.Password = newPw.ToString(); //update into restaurant database result = RestaurantDB.updateRestaurant(ra); } else { found = false; //cannot find the restaurant from the database } } if (found) //if found { if (result > 0) //result cannot be zero { try //use try and catch to send an email to the organization and customer { SmtpClient client = new SmtpClient("smtp.gmail.com"); client.EnableSsl = true; client.Credentials = new NetworkCredential("*****@*****.**", "smart-travel1005"); MailMessage msg = new MailMessage("*****@*****.**", tbxEmail.Text); msg.Subject = "New Password"; msg.Body = "Your new password is: " + newPw.ToString() + "\r\n Please change your password again"; client.Send(msg); //send an email lblOutput.Text = "New Password has been sent to your email"; return; } catch (Exception ex) { lblOutput.Text = "Active internet connection needed!"; //show error message when user do not have internet connection return; } } else { lblOutput.Text = "Fails to update the password"; //show error message when user cannot update the password return; } } lblOutput.Text = "Account with this email address does not exist. Sign up for the account"; //if the account is not exist with our website }