Reading XML Files from disk - Object reference not set to an instance of an object

Unity Engine
,
1

Hello all,
I’m currently trying to load data from an XML file and i can’t figure out how to set the xml path to be loaded right.

I have a couple of classes which are set like this:

Question.cs

public class Question
{
    [XmlAttribute("Type")]
    public string type;

    [XmlElement("Question")]
    public string question;
}

QuestionContainer.cs

[XmlRoot("QuestionCollection")]
public class QuestionContainer
{
    [XmlArray("Questions")]
    [XmlArrayItem("Question")]
    public List<Question> questions = new List<Question>();

    public static QuestionContainer Load(string path)
    {
        TextAsset _xml = Resources.Load<TextAsset>(path);
        //TextAsset _xml = Resources.Load<TextAsset>(fileName).text;
        XmlSerializer serializer = new XmlSerializer(typeof(QuestionContainer));
        StringReader reader = new StringReader(_xml.text);
        QuestionContainer questions = serializer.Deserialize(reader) as QuestionContainer;
        reader.Close();
        return questions;
    }
}

XML File which looks like this:

<?xml version="1.0" encoding="UTF-8"?>
<QuestionCollection>
<Questions>
<Question type="Type1">
<Question>Q1</Question>
</Question>
<Question type="Type2">
<Question>Q2</Question>
</Question>
</Questions>
</QuestionCollection>

I’m trying to load the XML file like this:

    public const string path = "Assets/questionsList.xml";

    // Start is called before the first frame update
    void Start()
    {
        QuestionContainer qc = QuestionContainer.Load(path);
        foreach (Question question in qc.questions)
        {
            print(question.type);
        }
    }

However this does not work, i’ve tried to switch a couple of times the “path” variable and even tried to get the path of the TextAsset, however this does not seem that straight forward.

How could i load this file into my function?

2

Either make a public TextAsset reference and drag it in with the inspector, or go back to the documentation page and carefully review the requirements and pathing conventions necessary for Resources.Load().