RadPieChart won't update for the second time

[Kadir Kilicoglu]

<telerikChart:RadPieChart x:Name="rpcChart" Grid.Row="0" Margin="0,15,0,0">

                        <telerikChart:PieSeries SelectedPointOffset="0.3" SliceStyleSelector="{StaticResource PieSliceSelector}"  RadiusFactor="0.7">

 

                            <telerikChart:PieSeries.SliceStyles>

                                <Style TargetType="Path">

                                    <Setter Property="Fill">

                                        <Setter.Value>

                                            <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

                                                <LinearGradientBrush.GradientStops>

                                                    <GradientStopCollection>

                                                        <GradientStop Color="{StaticResource Nephritis}" Offset="0"/>

                                                        <GradientStop Color="{StaticResource Peter River}" Offset="1"/>

                                                    </GradientStopCollection>

                                                </LinearGradientBrush.GradientStops>

                                            </LinearGradientBrush>

                                        </Setter.Value>

                                    </Setter>

 

                                </Style>

                                <Style TargetType="Path">

                                    <Setter Property="Fill">

                                        <Setter.Value>

                                            <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

                                                <LinearGradientBrush.GradientStops>

                                                    <GradientStopCollection>

                                                        <GradientStop Color="{StaticResource Alizarin}" Offset="0"/>

                                                        <GradientStop Color="{StaticResource Carrot}" Offset="1"/>

                                                    </GradientStopCollection>

                                                </LinearGradientBrush.GradientStops>

                                            </LinearGradientBrush>

                                        </Setter.Value>

                                    </Setter>

                                </Style>

                            </telerikChart:PieSeries.SliceStyles>

                            <telerikChart:PieSeries.LabelDefinitions>

                                <telerikChart:ChartSeriesLabelDefinition Binding="Text">

                                    <telerikChart:ChartSeriesLabelDefinition.Template>

                                        <DataTemplate>

                                            <TextBlock Text="{Binding Value, StringFormat=\{0:C\}}" FontWeight="Bold" FontFamily="Segoe UI Semibold" Visibility="{Binding Value, ConverterParameter=Value, Converter={StaticResource AmountToVisibilityConverter}}">

                                                <TextBlock.Foreground>

                                                    <SolidColorBrush Color="{StaticResource Clouds}"/>

                                                </TextBlock.Foreground>

                                            </TextBlock>

                                        </DataTemplate>

                                    </telerikChart:ChartSeriesLabelDefinition.Template>

                                </telerikChart:ChartSeriesLabelDefinition>

                            </telerikChart:PieSeries.LabelDefinitions>

                            <telerikChart:PieSeries.AngleRange>

                                <telerikChartEngine:AngleRange StartAngle="90" SweepAngle="360"/>

                            </telerikChart:PieSeries.AngleRange>

                        </telerikChart:PieSeries>

                    </telerikChart:RadPieChart>


Above code is my RadPieChart. And this is how i fill it:

protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            base.OnNavigatedTo(e);
            rpcChart.Series[0].ItemsSource = new double[] { 20, 30 };
        }

And this is the styleselector:

public class PieSliceSelector : StyleSelector
    {
        public override System.Windows.Style SelectStyle(object item, DependencyObject container)
        {
            var dataPoint = item as PieDataPoint;
            var dataContainer = container as PieSeries;
            Style style = new Style(typeof(Path));

            //Setting the pie slice color:
            if (dataPoint.Value >= 0 && dataPoint.CollectionIndex == 0)
            {
                style = dataContainer.SliceStyles[0];
                dataPoint.IsSelected = true;
            }
            else
            {
                style = dataContainer.SliceStyles[1];
            }

            return style;

            //return base.SelectStyle(item, container);
        }
    }

This is the code i change my datapoints via 3 different buttons on the page which names are Daily,Weekly,Monthly:

private void Daily_Tapped(object sender, System.Windows.Input.GestureEventArgs e)
        {
            rpcChart.Series[0].ItemsSource = new double[] { 20, 30 };
        }

        private void Weekly_Tapped(object sender, System.Windows.Input.GestureEventArgs e)
        {
            rpcChart.Series[0].ItemsSource = new double[] { 5, 50 };
        }

        private void Monthly_Tapped(object sender, System.Windows.Input.GestureEventArgs e)
        {
            rpcChart.Series[0].ItemsSource = new double[] { 70, 13 };
        }

PROBLEM IS:

When i click one of the buttons (say 'Daily' button) RadPieChart updates the chart for the first time. But when i click to another button (say 'Monthly' button) there is no updating. I'm debuggin the application and ItemSource values looks fine. But chart visual doesn't update itself? Stucked here over 3 days. Any idea?

[Kadir Kilicoglu]

Yea ' found the problem: StyleSelector. Removed and problem gone. Thanks to me :) 

Advice: Be carefull on this kind a selectors