I tried replicating the graph given at the link https://help.infragistics.com/Help/Doc/WindowsPhone/2011.1/CLR4.0/html/xamDataChart_Getting_Started_with_xamDataChart.html 

I was able to get the desired output when created the graph in Xaml, but not in C#.

My C# code is given below.

 SimpleDataCollection data = new SimpleDataCollection();

            XamDataChart datachart = new XamDataChart();

            datachart.Margin = new Thickness(5);

            datachart.DataContext = data;

            //------------------Initialize the axes

            //------X Axis

            CategoryXAxis xmAxis = new CategoryXAxis();

            xmAxis.Label = "{Label}";

            xmAxis.ItemsSource = data;

            AxisLabelSettings abs = new AxisLabelSettings();

            abs.Extent = 35;

            abs.Location = AxisLabelsLocation.OutsideTop;

            xmAxis.LabelSettings = abs;

            //------Y Axis

            NumericYAxis ymAxis = new NumericYAxis();

            AxisLabelSettings yaxissetting = new AxisLabelSettings();

            ymAxis.DataContext = data;

            yaxissetting.Extent = 55;

            yaxissetting.Location = AxisLabelsLocation.OutsideRight;

            ymAxis.LabelSettings = yaxissetting;

            datachart.Axes.Add(xmAxis);

            datachart.Axes.Add(ymAxis);

            //-------------------------------Adding Spline

            SplineAreaSeries series = new SplineAreaSeries();

            series.ValueMemberPath = "Value";

            series.DataContext = data;

            series.XAxis = xmAxis;

            series.YAxis = ymAxis;

            datachart.Series.Add(series);

            this.LayoutRoot.Children.Add(datachart);    

And my corresponding xaml code is (its working fine)

 <Grid x:Name="LayoutRoot">

        <ig:XamDataChart x:Name="DataChart">

            <ig:XamDataChart.DataContext>

                <Models:SimpleDataCollection/>

            </ig:XamDataChart.DataContext>

            <ig:XamDataChart.Axes>

                <ig:CategoryXAxis x:Name="xmAxis" ItemsSource="{Binding}" Label="{}{Label}">

                    <ig:CategoryXAxis.LabelSettings>

                        <ig:AxisLabelSettings Location="OutsideTop" Extent="35"/>

                    </ig:CategoryXAxis.LabelSettings>

                </ig:CategoryXAxis>

                <ig:NumericYAxis x:Name="ymAxis">

                    <ig:NumericYAxis.LabelSettings>

                        <ig:AxisLabelSettings Location="InsideTop" Extent="55"/>

                    </ig:NumericYAxis.LabelSettings>

                </ig:NumericYAxis>

            </ig:XamDataChart.Axes>

            <ig:XamDataChart.Series>

                <ig:SplineAreaSeries ValueMemberPath="Value" ItemsSource="{Binding}" XAxis="{Binding ElementName=xmAxis}" YAxis="{Binding ElementName=ymAxis}"></ig:SplineAreaSeries>

            </ig:XamDataChart.Series>

        </ig:XamDataChart>

    </Grid>

Kindly help me where I am getting it wrong.      

Regards

Rajat Saini