Scrolling X axis Plot area - Silverlight Column Se

I have a Column series chart which is working fine.

I have a feature that i need to add to that, i want the horizontall scroll to be enabled to the plot area that is x-axis.

Here is the screen shot:

If you see the screen shot i have six items, and the bar are very thin because of more number of items, so suppose if i have 20 items then the bars will not be visible at all.

So can we make the X-axis bar scrollable horizontally ?

EDIT

ResourceDictionary.xaml

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:convertor="clr-namespace:ChartingDV.Provider"
    xmlns:datavis="clr-namespace:System.Windows.Controls.DataVisualization;assembly=System.Windows.Controls.DataVisualization.Toolkit"
    xmlns:charting="clr-namespace:System.Windows.Controls.DataVisualization.Charting;assembly=System.Windows.Controls.DataVisualization.Toolkit"
    xmlns:chartingprimitives="clr-namespace:System.Windows.Controls.DataVisualization.Charting.Primitives;assembly=System.Windows.Controls.DataVisualization.Toolkit">

    <ControlTemplate x:Key="PhoneChartPortraitTemplate" TargetType="charting:Chart">
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="*"/>
                <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>
            <datavis:Title
                Content="{TemplateBinding Title}"
                Style="{TemplateBinding TitleStyle}"/>
            <datavis:Legend x:Name="Legend"
                Grid.Row="2"
                Header="{TemplateBinding LegendTitle}"
                Style="{TemplateBinding LegendStyle}">
                <datavis:Legend.ItemsPanel>
                    <ItemsPanelTemplate>
                        <StackPanel Orientation="Horizontal"/>
                    </ItemsPanelTemplate>
                </datavis:Legend.ItemsPanel>
                <datavis:Legend.Template>
                    <ControlTemplate TargetType="datavis:Legend">
                        <Grid>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto" />
                                <RowDefinition />
                            </Grid.RowDefinitions>
                            <ScrollViewer
                                    Grid.Row="1"
                                    HorizontalScrollBarVisibility="Auto"
                                    VerticalScrollBarVisibility="Disabled"
                                    BorderThickness="0"
                                    Padding="0"
                                    IsTabStop="False">
                                <ItemsPresenter
                                        x:Name="Items"
                                        Margin="10,0,10,10"/>
                            </ScrollViewer>
                        </Grid>
                    </ControlTemplate>
                </datavis:Legend.Template>
            </datavis:Legend>
            <chartingprimitives:EdgePanel
                Grid.Column="0"
                Grid.Row="1"
                x:Name="ChartArea"
                Style="{TemplateBinding ChartAreaStyle}">
                <Grid
                    Canvas.ZIndex="-1"
                    Style="{TemplateBinding PlotAreaStyle}" />
            </chartingprimitives:EdgePanel>
        </Grid>
    </ControlTemplate>

    <!-- Chart Style for Phone -->
    <Style x:Key="PhoneChartStyle" TargetType="charting:Chart">
        <Setter Property="IsTabStop" Value="False" />
        <Setter Property="Padding" Value="10" />
        <Setter Property="Palette">
            <Setter.Value>
                <datavis:ResourceDictionaryCollection>
                    <!-- Blue -->
                    <ResourceDictionary>
                        <SolidColorBrush x:Key="Background" Color="#E85F3D"/>
                        <Style x:Key="DataPointStyle" TargetType="Control">
                            <Setter Property="Background" Value="{StaticResource Background}" />
                        </Style>
                        <Style x:Key="DataShapeStyle" TargetType="Shape">
                            <Setter Property="Stroke" Value="{StaticResource Background}" />
                            <Setter Property="StrokeThickness" Value="2" />
                            <Setter Property="StrokeMiterLimit" Value="1" />
                            <Setter Property="Fill" Value="{StaticResource Background}" />
                        </Style>
                    </ResourceDictionary>
                    <!-- Red -->
                    <ResourceDictionary>
                        <SolidColorBrush x:Key="Background" Color="#76D164"/>
                        <Style x:Key="DataPointStyle" TargetType="Control">
                            <Setter Property="Background" Value="{StaticResource Background}" />
                        </Style>
                        <Style x:Key="DataShapeStyle" TargetType="Shape">
                            <Setter Property="Stroke" Value="{StaticResource Background}" />
                            <Setter Property="StrokeThickness" Value="2" />
                            <Setter Property="StrokeMiterLimit" Value="1" />
                            <Setter Property="Fill" Value="{StaticResource Background}" />
                        </Style>
                    </ResourceDictionary>
                    <!-- Light Green -->
                    <ResourceDictionary>
                        <SolidColorBrush x:Key="Background" Color="#648ED1"/>
                        <Style x:Key="DataPointStyle" TargetType="Control">
                            <Setter Property="Background" Value="{StaticResource Background}" />
                        </Style>
                        <Style x:Key="DataShapeStyle" TargetType="Shape">
                            <Setter Property="Stroke" Value="{StaticResource Background}" />
                            <Setter Property="StrokeThickness" Value="2" />
                            <Setter Property="StrokeMiterLimit" Value="1" />
                            <Setter Property="Fill" Value="{StaticResource Background}" />
                        </Style>
                    </ResourceDictionary>
                </datavis:ResourceDictionaryCollection>
            </Setter.Value>
        </Setter>
        <Setter Property="LegendStyle">
            <Setter.Value>
                <Style TargetType="datavis:Legend">
                    <Setter Property="HorizontalAlignment" Value="Center"/>
                    <Setter Property="VerticalAlignment" Value="Center"/>
                    <Setter Property="BorderBrush" Value="{StaticResource PhoneForegroundBrush}"/>
                    <Setter Property="Margin" Value="20"/>
                </Style>
            </Setter.Value>
        </Setter>
        <Setter Property="ChartAreaStyle">
            <Setter.Value>
                <Style TargetType="Panel">
                    <Setter Property="MinWidth" Value="100" />
                    <Setter Property="MinHeight" Value="75" />
                </Style>
            </Setter.Value>
        </Setter>
        <Setter Property="PlotAreaStyle">
            <Setter.Value>
                <Style TargetType="Grid">
                    <Setter Property="Background" Value="Transparent"/>
                </Style>
            </Setter.Value>
        </Setter>
        <Setter Property="Template" Value="{StaticResource PhoneChartPortraitTemplate}"/>
    </Style>

</ResourceDictionary>

In the XAMl file:

<charting:Chart Name="barChart"
    Style="{StaticResource PhoneChartStyle}"
    Template="{StaticResource PhoneChartPortraitTemplate}">
    <charting:Chart.Series>
        <charting:ColumnSeries 
            Title="Incorrect"
            IndependentValueBinding="{Binding Key}"
            DependentValueBinding="{Binding Value}"
            AnimationSequence="Simultaneous">
        </charting:ColumnSeries>
        <charting:ColumnSeries                 
            Title="Correct"
            IndependentValueBinding="{Binding Key}"
            DependentValueBinding="{Binding Value}"
            AnimationSequence="Simultaneous">
        </charting:ColumnSeries>
        <charting:ColumnSeries                 
            Title="Skipped"
            IndependentValueBinding="{Binding Key}"
            DependentValueBinding="{Binding Value}"
            AnimationSequence="Simultaneous">
        </charting:ColumnSeries>
    </charting:Chart.Series>
</charting:Chart>

Finally i have solved it, but i have not made any changes to the APIs,instead i have followed the below approach.

1) We have an option to scroll the entire chart.

2) Make the entire bar chart to scroll and then remove the Y axis values.

3) Now create a Dummy layout with Y axis values using Grid row definitions.This will your root Grid.

4) Now inside the root grid place you chart grid.

5) Now when you take n no of tests you can scroll the chart, but your dummy layout with Y axis values remains constant as it is, so for the user it looks like the bars are scrolling.

Enjoy :)