WPF binding a combobox selectedvalue to a data class
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I have a page with a number of fields on it that I'm using to create a new class record called Account. One of the fields is a currency code that is set via a combobox. The combobox is bound to a datatable with an id and a description. I'm trying to use binding so that the selectedvalue of the combobox automatically updates the currency id of the Account class. So far no joy...

Class definition:

    class Account : IDataErrorInfo
    {
        public String Name { get; set; }
        public int CurrencyID { get; set; }
        public int BankID { get; set; }
        public String AccountNumber { get; set; }
        public decimal OpeningBalance { get; set; }
    
     ... other definitions for validation handling ...

    }

Combobox definition:

    <ComboBox x:Name="cboCurrency" Grid.Column="1" Grid.Row="1" Width="250" HorizontalAlignment="Left" 
         SelectedValue="{Binding Path=Account.CurrencyID, UpdateSourceTrigger=LostFocus, ValidatesOnDataErrors=True, NotifyOnValidationError=true}"
         ToolTip="{Binding ElementName=cboCurrency, Path=(Validation.Errors)[0].ErrorContent}"/>

Page constructor:

    public AccountAdd()
    {
        InitializeComponent();

        base.DataContext = new Account();

        // Load the Currency combo with the list of currencies
        //
        cboCurrency.DisplayMemberPath = "Name";
        cboCurrency.SelectedValuePath = "_id";
        cboCurrency.ItemsSource = _DBUtils.getCurrencyList().DefaultView;


    }

Save Code:

    private void btnAccountOK_Click(object sender, RoutedEventArgs e)
    {
        Account newAccountRec = (Account)base.DataContext;
            
        int newid = _DBUtils.AddAccount(newAccountRec);
    }
