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c# - What is the easiest way to save an Observable collectin of object to an XML file?

I've have an Observable collection containing customer objects:

  public class Customer
  {
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string Street { get; set; }
    public string Location { get; set; }
    public string ZipCode { get; set; }
  }

What is the easiest way to dump this out to an XML file so I can read it in later?

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XML serialization :

ObservableCollection<Customer> customers = new ObservableCollection<Customer>();
...

XmlSerializer xs = new XmlSerializer(typeof(ObservableCollection<Customer>));
using (StreamWriter wr = new StreamWriter("customers.xml"))
{
    xs.Serialize(wr, customers);
}

To reload the data from the file :

XmlSerializer xs = new XmlSerializer(typeof(ObservableCollection<Customer>));
using (StreamReader rd = new StreamReader("customers.xml"))
{
    customers = xs.Deserialize(rd) as ObservableCollection<Customer>;
}

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