XML Serialization of List - XML Root

Question

First question on Stackoverflow (.Net 2.0):

So I am trying to return an XML of a List with the following:

public XmlDocument GetEntityXml()
    {             


        

Answer 1

There is a much easy way:

public XmlDocument GetEntityXml<T>()
{
    XmlDocument xmlDoc = new XmlDocument();
    XPathNavigator nav = xmlDoc.CreateNavigator();
    using (XmlWriter writer = nav.AppendChild())
    {
        XmlSerializer ser = new XmlSerializer(typeof(List<T>), new XmlRootAttribute("TheRootElementName"));
        ser.Serialize(writer, parameters);
    }
    return xmlDoc;
}

Answer 2

so simple....

public static XElement ToXML<T>(this IList<T> lstToConvert, Func<T, bool> filter, string rootName)
{
    var lstConvert = (filter == null) ? lstToConvert : lstToConvert.Where(filter);
    return new XElement(rootName,
       (from node in lstConvert
       select new XElement(typeof(T).ToString(),
       from subnode in node.GetType().GetProperties()
       select new XElement(subnode.Name, subnode.GetValue(node, null)))));

}

Answer 3

If I understand correctly, you want the root of the document to always be the same, whatever the type of element in the collection ? In that case you can use XmlAttributeOverrides :

       XmlAttributeOverrides overrides = new XmlAttributeOverrides();
       XmlAttributes attr = new XmlAttributes();
       attr.XmlRoot = new XmlRootAttribute("TheRootElementName");
       overrides.Add(typeof(List<T>), attr);
       XmlSerializer serializer = new XmlSerializer(typeof(List<T>), overrides);
       List<T> parameters = GetAll();
       serializer.Serialize(xmlWriter, parameters);

Answer 4

A better way to the same thing:

public XmlDocument GetEntityXml<T>()
{
    XmlAttributeOverrides overrides = new XmlAttributeOverrides();
    XmlAttributes attr = new XmlAttributes();
    attr.XmlRoot = new XmlRootAttribute("TheRootElementName");
    overrides.Add(typeof(List<T>), attr);

    XmlDocument xmlDoc = new XmlDocument();
    XPathNavigator nav = xmlDoc.CreateNavigator();
    using (XmlWriter writer = nav.AppendChild())
    {
        XmlSerializer ser = new XmlSerializer(typeof(List<T>), overrides);
        List<T> parameters = GetAll<T>();
        ser.Serialize(writer, parameters);
    }
    return xmlDoc;
}