Lee Barry:

I have tried to read/save xml file to Datagrid and I'm using Dataset to do it. Now I have succeed to load xml file data to datagrid, the code as follows:

public class StoreDbDataSet
{
    public DataTable GetProducts()
    {
        return ReadDataSet().Tables[0];
    }

    internal static DataSet ReadDataSet()
    {
        DataSet ds = new DataSet();
        ds.ReadXmlSchema("store.xsd");
        ds.ReadXml("store.xml");
        return ds;
    }

}

And:

public class StoreDb
{
    public ObservableCollection GetProducts()
    {
        DataSet ds = StoreDbDataSet.ReadDataSet();

        ObservableCollection products = new ObservableCollection();
        foreach (DataRow productRow in ds.Tables["Products"].Rows)
        {
            products.Add(new Product((string)productRow["ModelNumber"],
                (string)productRow["ModelName"], (string)productRow["InputAddress"],
                (string)productRow["OutputAddress"], (string)productRow["DiagAddress"],
                (string)productRow["Description"], (byte)productRow["CategoryID"],
                (string)productRow["CategoryName"], (string)productRow["ProductImage"]));
        }
        return products;
    }
}

Xaml File:

The ViewModel:

    public ICollectionView ProductsView
    {
        get { return _ProductsView; }
        set
        {
            _ProductsView = value;
            NotifyPropertyChanged();
        }
    }

My question is when I changed the datagrid data, how can I save the changes to xml?Thanks in advance!