Circle in line chart

[Paulo]

I have a line series chart. How can I do to show a circle into line value:

------------18--------
A circle around 18 and so on. If my graph has more value, the circle must be in each value.

[Petar Kirov]

Hello Paulo, 

In order to make the Series's labels circles you have to do 2 things:

1. Set each of your ChartSeries's Appearance.LabelAppearance.FillStyle.MainColor properties to a specific value
   • by default this property is set to null, so labels can't be drawn when their colour is unknown
2. Set each of yours ChartSeries's Appearance.LabelAppearance.Figure to Circle
   • by default it is Rectangle

Or declaratively in your .aspx file:

<telerik:RadChart ID="RadChart1" runat="server" Height="450px" Width="600px">
    <Series>
        <telerik:ChartSeries Name="Series 1" Type="Line">
            <Appearance>
                <FillStyle MainColor="213, 247, 255" />
                <LabelAppearance Figure="Circle">
                    <FillStyle MainColor="Azure" /> //or any other color
                </LabelAppearance>
            </Appearance>
            <Items>
                <telerik:ChartSeriesItem Name="Item 1" XValue="0" YValue="3" />
                //...
            </Items>
        </telerik:ChartSeries>
        //<telerik:ChartSeries Name="Series ...X" Type="Line">
        //  Appearance>
        //      <FillStyle MainColor="213, 247, 255" />
        //      <LabelAppearance Figure="Circle">
        //          <FillStyle MainColor=/*your colour for Series X here*/"" />
        //      </LabelAppearance>
        //  </Appearance>
        //  //...
        //</telerik:ChartSeries>

    </Series>
</telerik:RadChart>

You can explore the different properties of Line series from Visual Studio by:

1. right-clicking in the design view on a RadChart control ->
2. Click Properties ->
3. The properties pane will appear in VS (if it's not already there)
4. Go to Series click on the button [...], right-side of (Collection)
5. The ChartSeries Collection Editor Window will pop-up
6. Explore the properties of Each of your Series (the properties set there will apply to all of the series's items, unless you change something on a specific item)

I hope my answer is helpful. 

All the best,
Petar Kirov
the Telerik team

[Paulo]

I try:
chartSeries5.Appearance.FillStyle.. but LabelAppearance is not posible. How can I do with codebehind?
I have a dificult to change of aspx to codebehind. I use codebehind..
This way do not work too.
chartSeries5.Appearance.LabelAppearance.FillStyle.... no is posible too. 

I made:
chartSeries5.Appearance.LabelAppearance.Figure = Telerik.Charting.Styles.DefaultFigures.Circle; Do not work too.

[Petar Kirov]

Hi Paulo,

If you want to add chartSeries in code behind you can try this:
1. Create a ChartSeries object:

ChartSeries chartSeries1 = new ChartSeries();

2. Set its type to whatever you like:

chartSeries1.Type = ChartSeriesType.Line; // For example

3. Change its Appearance.LabelAppearance.Figure to "Circle" and set MainColor to something different than null:

chartSeries1.Appearance.LabelAppearance.Figure = "Circle";
chartSeries1.Appearance.LabelAppearance.FillStyle.MainColor = System.Drawing.Color.DarkBlue;

4. Set its items:

chartSeries1.SetItems(
    new ChartSeriesItem(1, 6),
    new ChartSeriesItem(0, 3)
    //... or something like that depending on your data source
    );

5. Finally don't forget to add it to your RadChart:

radChart1.AddChartSeries(chartSeries1);

All the best,
Petar Kirov
the Telerik team