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15
need to show Percents on XamPieChart(Infragistics 2014)
posted

Hi

I need to show percents on XamPieChart(Infragistics 2014)

I checked infragistics 2014 sample browser

and XamPieChart - Labels With Percentage - Options - Labels Displayed - Percent function could show the percentage.

But couldn't find how to use it

Could you advise me how to ?

Thanks for ur support in advance

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  • 2680
    Offline posted

    Hello,

    Thank you for posting to Infragistics Community!

    Please, find attached below a sample app demonstrating how to display the item labels in the XamPieChart as percentage values.

    The approach involves defining a LabelTemplate for the chart:

     <ig:XamPieChart Name="pieChart"
    …
    LabelTemplate="{StaticResource labelTemplate1}"/>

    As you can see, the text is bound to a property of the Label DataContext named “PercentValue” and additionally, a custom converter is used to adjust the percent value:

    <Grid.Resources>
         <local:ValueToPercentConverter x:Key="conv" />
         <DataTemplate x:Key="labelTemplate1">
             <StackPanel Orientation="Vertical">
                 <TextBlock Text="{Binding PercentValue, StringFormat=P, Converter={StaticResource conv}}" />
             </StackPanel>
         </DataTemplate>
     </Grid.Resources>

       public class ValueToPercentConverter : IValueConverter
      {
          public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
          {
              double dv = (double)value;
              if (dv > 0)
                  return dv / 100;
     
              return value;
          }
     
          public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
          {
              throw new NotImplementedException();
          }
    }

    In conclusion, please, check out the sample and let me know if it helps.

    Best regards,
    Bozhidara Pachilova
    Software Developer

    XamPieChartPercentages.zip

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