Silver charts axis intervals

I have a number of Silverlight charts开发者_JAVA技巧 bound to datasets.

They all are working correctly however the values on the Axis display for years are showing, rather than full years, the points in between for example: 2007, 2007.2,2007.4 etc etc.

How can I make it so that it only show the full years?

Below is a screen shot to further explain visually what I mean.

Here is the code I use to bind the chart data:

foreach (var myVariable in UserSelections.TheDataSet.ER_Variables)
                {
                    var newSeries = new LineSeries
                                        {
                                            ItemsSource =
                                                UserSelections.GetDataRowsByVariableAndLocation(
                                                    UserSelections.GetIdForLocation(UserSelections.Locations[0]),
                                                    myVariable.Variable_ID),
                                            IndependentValueBinding = new Binding("Year"),
                                            DependentValueBinding = new Binding("Value"),
                                            Title = myVariable.Name,
                                            IsSelectionEnabled = true

                                        };
                    MainChart.Series.Add(newSeries);
                }

In the chart definition you need the following:

<toolkit:Chart Title="Chart Title" VerticalAlignment="Top">
    <toolkit:Chart.Axes>
        <toolkit:DateTimeAxis IntervalType="Years" Interval="1"/>
    </toolkit:Chart.Axes>

I think this should do the trick (assuming that your date is actually a DateTime variable).

The key is you need to set the Interval.

(Thanks to AnthonyWJones for pointing that out)