The simplest way to store object to .xml file in c#.

The simplest way to implement xml serialization in c#:

1. Add attribute [Serializable] for all classes.

2. All public fields will be serialized.

3. If you want to store field as xml attribute add attribute [XmlAttribute("")].

[Serializable]
public class SubData
{
    [XmlAttribute("")]
    public int subDataAsAttribute;
    public int subData;
    public int SubProperty { get { return subDataAsAttribute + subData; } }
}
[Serializable]
public class Data
{
    public int publicIntData;
    internal int internalIntData;
    protected int protectedIntData;
    private int privateIntData;
    public SubData subData;
    public Data()
    {
    }
    public Data(int publicIntData)
    {
        this.publicIntData = publicIntData;
    }
}

4. Create objects XmlSerializer and TextWriter and store needed object to xml file:

string xmlFilePath = "data.xml";
XmlSerializer serializer = new XmlSerializer(typeof(Data));
using (TextWriter writer = new StreamWriter(xmlFilePath))
{
    serializer.Serialize(writer, data);
}

5. To read the stored object use XmlSerializer and TextReader:

Data actualData;
using (TextReader reader = new StreamReader(xmlFilePath))
{
    actualData = (Data) serializer.Deserialize(reader);
}
6. See sample of relevant xml file:

Reference:

XmlSerializer Class