I am working at Windows Phone 7 C#, Xaml, XML and LINQ programming. I need to organize search by part of the name at following XML:

<Row>
  <Myday>23</Myday>
  <Mymonth>12</Mymonth>
  <Mynames>Alex, Joanna, Jim</Mynames>
</Row>

<Row>
  <Myday>24</Myday>
  <Mymonth>12</Mymonth>
  <Mynames>John, David</Mynames>
</Row>

I have following query:

var myData = from query in loadedData.Descendants("Row")
             where query.Element("Mynames").Value.Contains("Jo")
             select new Kalendars
                        {
                            Myday = (int)query.Element("Myday"),
                            Mymonth = (int)query.Element("Mymonth"),
                            Mynames = (string)query.Element("Mynames")
                        };
             listBoxSearch.ItemsSource = myData;

Query problem is, that it will return full part of the names like "Alex, Joanna, Jim" and "John, David". How can i get only Joanna and John? Second question is how it is possible to do that user enters ...Value.Contains("jo") and query still returns Joanna and John? Possible solution (needs some corrections)

public string Search_names
        {
            get { return search_names; }

            set {
            string line = this.Mynames;
            string[] names = line.Split(new[] { ", " }, StringSplitOptions.None);
            var jos = from name in names
                      where name.Contains("is")
                      select name; // ["Joanna"]
            // HOW TO BIND search_names?
            }
        }