[WPF] Use IValueConverter but hide the value in cell

Question

Hi, 

I have a column with a range of age.

I'm using a Convert to set a background color to a single cell of my column 'age'...

I would color the cell but hide the numeric value.

I can set a custom background, but I can't hide the value.

How can I make this?

This is my code:

XAML:

                    <DataGridTextColumn Binding="{Binding Age}" Header="Age - Color Range" Width="200">

                        <!-- COLOR CELLA -->

                        <DataGridTextColumn.ElementStyle>

                            <Style TargetType="{x:Type TextBlock}">

                                <Setter Property="Background" Value="{Binding Age, Converter={StaticResource ColorToCell}}"/>

                            </Style>

                        </DataGridTextColumn.ElementStyle>

                    </DataGridTextColumn>

C#

public class ColorToCell : IValueConverter

    {

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)

        {

            int tempValue = int.Parse(value.ToString());

            string tempString = "Red";

            if (tempValue >= 0 && tempValue <= 20)

                tempString = "#FF0000";

            if (tempValue > 20 && tempValue <= 40)

                tempString = "#F09300";

            if (tempValue > 40 && tempValue <= 60)

                tempString = "#EDDF00";

            if (tempValue > 60 && tempValue <= 80)

                tempString = "#CC00FF55";

            if (tempValue > 80 && tempValue <= 100)

                tempString = "#85AB00";

            SolidColorBrush brush = new SolidColorBrush();

            BrushConverter conv = new BrushConverter();

            brush = conv.ConvertFromString(tempString) as SolidColorBrush;

            return brush;

        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)

        {                        

            return DependencyProperty.UnsetValue;

        }

    }

Thanks.