Custom Labels

To create a custom annotation using the Axis.AnnoTemplate property, use the following XAML markup or code:

XAML	Copy Code
... <Chart:ChartView.AxisX> <Chart:Axis> <Chart:Axis.Resources > <local:ColorConverter x:Key="clrcnv" /> </Chart:Axis.Resources> <Chart:Axis.AnnoTemplate> <DataTemplate> <TextBlock Width="25" TextAlignment="Center" Text="{Binding Path=Value}" Foreground="{Binding Converter={StaticResource clrcnv}}"/> </DataTemplate> </Chart:Axis.AnnoTemplate> </Chart:Axis> </Chart:ChartView.AxisX> ...

XAML

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...
<Chart:ChartView.AxisX>
      <Chart:Axis>
        <Chart:Axis.Resources >
          <local:ColorConverter x:Key="clrcnv" />
        </Chart:Axis.Resources>
        <Chart:Axis.AnnoTemplate>
          <DataTemplate>
            <TextBlock Width="25" TextAlignment="Center" Text="{Binding Path=Value}"
             Foreground="{Binding Converter={StaticResource clrcnv}}"/>
          </DataTemplate>
        </Chart:Axis.AnnoTemplate>
      </Chart:Axis>
    </Chart:ChartView.AxisX>
...

C#	Copy Code
public class ColorConverter : IValueConverter { int cnt = 0; public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { //DataPoint dpt = (DataPoint)value; // alternate the brushes return cnt++ % 2 == 0 ? Brushes.Blue : Brushes.Red; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { return null; } }

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public class ColorConverter : IValueConverter {
   int cnt = 0;
   public object Convert(object value, Type targetType,
     object parameter, CultureInfo culture)
   {
     //DataPoint dpt = (DataPoint)value;
     // alternate the brushes
     return cnt++ % 2 == 0 ? Brushes.Blue : Brushes.Red;
   }
   public object ConvertBack(object value, Type targetType,
    object parameter, CultureInfo culture)
   {
     return null;
   }
}

Visual Basic	Copy Code
Public Class ColorConverter Implements IValueConverter Private cnt As Integer = 0 Public Function Convert(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As CultureInfo) As Object 'DataPoint dpt = (DataPoint)value; ' alternate the brushes Return (2 = 0) End Function Public Function ConvertBack(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As CultureInfo) As Object Return Nothing End Function End Class

Visual Basic

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Public Class ColorConverter
    Implements IValueConverter 
    Private cnt As Integer = 0 
    Public Function Convert(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As CultureInfo) As Object
        'DataPoint dpt = (DataPoint)value;
        ' alternate the brushes
        Return
        (2 = 0)       
    End Function 
    Public Function ConvertBack(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As CultureInfo) As Object
        Return Nothing
    End Function
End Class