public XElement Categories()
{
//XElement root = new XElement("root");
//root.Add(new XElement("element1"));
//root.Add(new XElement("element2"));
//root.Add(new XAttribute("attribute1", "a value"));
XElement categories = new XElement("categories");
foreach (var cat in _category.AllItems())
{
var category = new XElement("category");
category.Value = cat.Name;
categories.Add(category);
}
return(categories);
}