Highlight point in Line Chart | Infragistics Forums

Thanks Max, your answer gave me an idea to achive me requirements. Although I am new on Chart but with the help of documentation, I created a chart.

Here is my code

<igChart:XamWebChart x:Name="theChart" Width="Auto" Height="350" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Margin="0">

<igChart:XamWebChart.Series>

<igChart:Series ChartType="Line" >

<igChart:Series.Marker><igChart:Marker Type="Rectangle" /></igChart:Series.Marker>

<igChart:Series.DataPoints>

<igChart:DataPoint Value="55" Label="2007" />

<igChart:DataPoint Value="45" Label="2008" />

<igChart:DataPoint Value="36" Label="2009" />

<igChart:DataPoint Value="67" Label="2010" />

<igChart:DataPoint Value="80" Label="2011" />

<igChart:DataPoint Value="55" Label="2012" />

<igChart:DataPoint Value="50" Label="2013" />

</igChart:Series.DataPoints>

</igChart:Series>

<igChart:Series ChartType="Column" Opacity=".5">

<igChart:Series.DataPoints>

<igChart:DataPoint Value="0" />

<igChart:DataPoint Value="90" />

<igChart:DataPoint Value="0" />

</igChart:Series.DataPoints>

<igChart:Series.Fill>

</igChart:Series.Fill>

</igChart:Series>

</igChart:XamWebChart.Series>

</igChart:XamWebChart>

Now following questions....

How can I remove Column Series from Legend box i.e. Only Line series Name/Label should be visible in Legend box?
How can I remove the border of Column Series (its in black color in attach image)?
I need that Column series fill the entire plot area of chart vertically as my original image but when I set point to 90, it increase the Y-Axis value. How can I do that? Kindly also note that Line chart point values will be set dynamically so I don't know the maximum Y-Axis value (like hard-coded 90 value i gave in this example but eventually I don't know it) howeverI need that Column chart fill plot area vertically.

Kindly suggest any possible solution. I will appreciate if you give me any code snippets for the solution. Thanks