ArrayLists giving wrong information? C#

Questions & Answers
1

Hello there,

I am trying to make an Dialogue system(I dont want to use any plugins as this is a learning procces for me). But the ArrayLists are giving me other information then expected. This is my code:

private ArrayList Questions = new ArrayList();
private ArrayList Answers = new ArrayList();

  
    //public Texture CharacterTexture;
	void Start () {
      
        Answers.Add("Doorgaan?");
        Answers.Add("nee");
        Answers.Add("ja");
        Questions.Add(Answers);
        Answers.Clear();
        Answers.Add("En wat nu weer?");
        Answers.Add("aaaa");
        Answers.Add("bbbb");
        Questions.Add(Answers);
	}
	
	// Update is called once per frame
	void Update () {
	    
	}
    void OnGUI()
    {
        
        if(GUI.Button(new Rect(Screen.width / 2 - 150,250,300,50),((ArrayList)Questions[0])[0].ToString())){
            Debug.Log("Je hebt nu op nr 0 geklikt");
        }
        if (GUI.Button(new Rect(Screen.width / 2 - 150, 300, 300, 50), ((ArrayList)Questions[0])[1].ToString()))
        {
            Debug.Log("Je hebt nu op nr 1 geklikt");
        }
        if (GUI.Button(new Rect(Screen.width / 2 - 150, 350, 300, 50), ((ArrayList)Questions[0])[2].ToString()))
        {
            Debug.Log("Je hebt nu op nr 2 geklikt");
        }

Now I expect ‘Questions[0])[0]’ to display “Doorgaan?”, ‘Questions[0])[1]’ “Nee” etc. But instead it is showing me “en wat nu weer?”, “aaaa” and “bbbb”…
How can I fix it? What am I doing wrong in my code?

Thank you for your time :slight_smile:

2

You should allocate new Array, not Clear the old one.

 void Start () {
 
Answers.Add("Doorgaan?");
Answers.Add("nee");
Answers.Add("ja");
Questions.Add(Answers);

Answers = new ArrayList();
Answers.Add("En wat nu weer?");
Answers.Add("aaaa");
Answers.Add("bbbb");
Questions.Add(Answers);
}
3

Since this is a learning project i dont know how much of a “spoiler” answer you want.

However, your problem is in your data structure. You have one Answers list for all your questions. This wont work. You need a set of answers for every question.

So why do you get these results. You used

Answers.Clear();

and cleared the list => you lost the answers for 1st question.