I created a fieldlayout in the backend and I am trying to display it in a XamDataGrid, but the fields I created won't display. As a matter of fact, nothing appears on the grid. What seems to be my problem?

Here is my xaml code:

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="">schemas.microsoft.com/.../presentation"
        xmlns:x="">schemas.microsoft.com/.../xaml"
        Title="MainWindow" Height="350" Width="525" xmlns:igWPF="">schemas.infragistics.com/.../wpf">
    <Grid>
        <Grid>
            <DockPanel LastChildFill="True" Margin="0,26,0,-26">
                <igWPF:XamDataGrid x:Name="Account_Info_XamDataGrid">
                </igWPF:XamDataGrid>
            </DockPanel>
        </Grid>
    </Grid>
</Window>

and the backend:

private void ShowAccountInfoGrid()
{        
    ComboBoxItemsProvider title_provider = new ComboBoxItemsProvider();
    ComboBoxItemsProvider code_provider = new ComboBoxItemsProvider();
    List<Acc_LinkDTO> Acc_lists = new List<Acc_LinkDTO>();

    Acc_lists = _Acc_LinkUIAdapter.getAllAcc_Links().ToList();
    accounts = _AccountUIAdapter.getALlGroup();

    Account_Info_XamDataGrid.FieldLayouts.Clear();
    foreach (var x in Acc_lists)
    {
        int i = 0;
        title_provider.Items.Add(new ComboBoxDataItem(i, x.Acc_LinkTitle));
        i++;
    }

    foreach (var x in accounts)
    {
        int i = 0;
        code_provider.Items.Add(new ComboBoxDataItem(i, x.Code2));
        name_provider.Items.Add(new ComboBoxDataItem(i, x.Name));
        i++;
    }

    //First column
    Field fld1 = new Field();
    fld1.Name = "Account Title";
    Style style1 = new Style(typeof(XamComboEditor));
    style1.Setters.Add(new Setter(XamComboEditor.ItemsProviderProperty, title_provider));
    fld1.Settings.EditorStyle = style1;
    fld1.Settings.EditorType = typeof(XamComboEditor);
    fieldLayout.Fields.Add(fld1);

    Account_Info_XamDataGrid.FieldLayouts.Add(fieldLayout);
}