NullReferenceException

Unity Engine
1

Hi guys, I am new in game development. I am attempting to send an email through input fields but I have been receiving NullReferenceException when I click the Submit button.

Here are my codes:
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;
using System.Collections;
using System;
using System.Net;
using System.Net.Mail;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;

[RequireComponent(typeof(InputField))]
public class FeedbackForm : MonoBehaviour {

InputField emailInputField;
InputField subjectInputField;
InputField messageInputField;

void Start()
{
emailInputField = GetComponent();
subjectInputField = GetComponent();
messageInputField = GetComponent();
}

void SendTheMail(string text)
{
MailMessage mail = new MailMessage();

mail.From = new MailAddress(“darrenleejingyu@gmail.com”);
mail.To.Add(“askflytech@gmail.com”);
mail.Subject = “Test Mail”;
mail.Body = text;

SmtpClient smtpServer = new SmtpClient(“smtp.gmail.com”);
smtpServer.Port = 587;
smtpServer.Credentials = new System.Net.NetworkCredential(“askflytech@gmail.com”, “flytechadmin2017”) as ICredentialsByHost;
smtpServer.EnableSsl = true;
ServicePointManager.ServerCertificateValidationCallback = delegate (object s, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
{ return true; };
smtpServer.Send(mail);
Debug.Log(“success”);
}

public void OnBackToMainMenuClick()
{
SceneManager.LoadScene(“Mainpage”);
}

void OnSubmitButtonClick()
{
SendTheMail(messageInputField.text);
}

}

Can you guys help me to point out where is the mistake and how to fix that?
Your help is greatly appreciated. Thank you

2

If the credentials provided are actually used and are not fake, please remove them ASAP!

Also please use code tags

Inspect the error and try to find at which line it happens. That would probably help alot.
Also make sure that messageInputField is actually attached to the gameObject which has the FeedbackForm

3

yeah perhaps you shouldn’t cut-and-paste your email address and password into a public forum?