Format Lablel to display Negative currency Values and Bold

[Mallikharjun Mulagundla]

Hi,

How can I format the value in the chart to display Negative vlaues when my data is in -ve values.
I have currently set it to  the following:
 

s.DefaultLabelValue = "#Y{C0}"

Aslo, I want to set Chart Slices Label Font to Bold.

Thanks, Malli

[Velin]

Hello Mallikharjun Mulagundla,

Please, explain in more details what you need to do. Thanks.

Regards,
Velin
the Telerik team

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[Mallikharjun Mulagundla]

I am binding same dataset to Chart, which has 2 Chart Serires. 1st Chart sesries  I set DefaultLabelValue as "#Y{C0}" and for the 2nd Chart series, I set as "#%".

I am able to -ve values in the Chart for "%" (2nd Chart Series). For 1st Chart Series it is showing as +ve for Currency, even though its actual value is -ve. Check the following code

<telerik:RadChart ID="PartnersChart" BorderColor="Black" BorderWidth="1px" runat="server" Width="770px" Height="290px" DefaultType="Pie" SkinsOverrideStyles="true" AutoLayout="true" AutoTextWrap="true" CreateImageMap="false" OnItemDataBound="PartnersChart_ItemDataBound">
   <Series>
       <telerik:ChartSeries DataYColumn="Value" Type="Pie" DefaultLabelValue="#Y{C0}">
           <Appearance LegendDisplayMode="ItemLabels"/>
       </telerik:ChartSeries>
       <telerik:ChartSeries DataYColumn="Value" Type="Pie" DefaultLabelValue="#%">
          <Appearance LegendDisplayMode="Nothing" />
       </telerik:ChartSeries>
   </Series>
</telerik:RadChart>

Also,. check the attached snapshot.

Thanks, Malli

[Velin]

Hello Mallikharjun Mulagundla,

One possible way you could go is to remove the DefaultlabelValue format and manually format the label values on the ItemDataBound event. Here is the code:

    chart.ItemDataBound += new EventHandler<ChartItemDataBoundEventArgs>(uxFieldChart_ItemDataBound);

void uxFieldChart_ItemDataBound(object sender, ChartItemDataBoundEventArgs e)
{
    string negative = string.Empty;

    double value = Convert.ToDouble((e.DataItem as DataRowView).Row.ItemArray[0]);

    if (value < 0)
        negative = "-";

    e.SeriesItem.Label.TextBlock.Text = negative + string.Format("{0:C}", value);

    e.SeriesItem.Label.TextBlock.Appearance.TextProperties.Font = new Font("Verdana", 9, FontStyle.Bold);
}

Kind regards,
Velin
the Telerik team

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