List<List<T>> to XML with LINQ

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I've changed my approach and decided to start writing XML with Linq. I've readed some tutorials and was able to write with no problem. However , i don't know how to write elements iterating over my array of lists. I've a nested foreach: foreach(List<xmldata> i in XMLList.XMLArrayList) {  foreach (var x in i) { } } that i can use to access elements of my list. Since its an array of list , each position of the array is going to have a list with three elements from this class: public class xmldata //Class to receive items list { public string xml_filename { get; set; }  public string colorname { get; set; }  public string colorvalues { get; set; } } However, if i directly write x.colorname into the Linq as an XAttribute , in the next iteration it'll overwrite its value and in the end the fill will have only the last element. i.e: List[0][1] colorname blue  colorvalue #434344 xml_filename filename  List[0][2]  colorname cyan  colorvalue #414354 xml_filename filename  List[0][3] colorname magenta  colorvalue #43213 xml_filename filename When the foreach loop finishes iterating over this position, the XML File is going to have only the magenta written. And i would like to have all values written (since it'll iterate over all list positions). How can i achieve that ? Thanks in advance.