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Resolved the chart data label binding issues on release mode. #694

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Merged
jfversluis merged 1 commit into from
Oct 21, 2025
Merged

Resolved the chart data label binding issues on release mode. #694

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43 changes: 28 additions & 15 deletions 10.0/Apps/DeveloperBalance/Pages/Controls/CategoryChart.xaml
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Original file line number Diff line number Diff line change
Expand Up @@ -2,17 +2,18 @@
<Border xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:chart="clr-namespace:Syncfusion.Maui.Toolkit.Charts;assembly=Syncfusion.Maui.Toolkit"
xmlns:controls="clr-namespace:DeveloperBalance.Pages.Controls"
xmlns:controls="clr-namespace:DeveloperBalance.Pages.Controls"
xmlns:shimmer="clr-namespace:Syncfusion.Maui.Toolkit.Shimmer;assembly=Syncfusion.Maui.Toolkit"
xmlns:pageModels="clr-namespace:DeveloperBalance.PageModels"
x:Class="DeveloperBalance.Pages.Controls.CategoryChart"
HeightRequest="{OnIdiom 300, Phone=200}"
x:DataType="pageModels:MainPageModel"
Style="{StaticResource CardStyle}">
<shimmer:SfShimmer
AutomationProperties.IsInAccessibleTree="False"
BackgroundColor="Transparent"
VerticalOptions="Fill"
IsActive ="{Binding IsBusy}">
IsActive="{Binding IsBusy}">
<shimmer:SfShimmer.CustomView>
<Grid>
<BoxView
Expand All @@ -22,8 +23,12 @@
</Grid>
</shimmer:SfShimmer.CustomView>
<shimmer:SfShimmer.Content>
<chart:SfCircularChart x:Name="Chart" SemanticProperties.Description="Task Categories Chart">
<chart:DoughnutSeries
<chart:SfCircularChart x:Name="Chart"
SemanticProperties.Description="Task Categories Chart">
<chart:SfCircularChart.Resources>
<controls:ChartDataLabelConverter x:Key="ChartDataLabelConverter"/>
</chart:SfCircularChart.Resources>
<chart:DoughnutSeries
ItemsSource="{Binding TodoCategoryData}"
PaletteBrushes="{Binding TodoCategoryColors}"
XBindingPath="Title"
Expand All @@ -32,27 +37,35 @@
EnableTooltip="False"
x:Name="doughnutSeries"
Radius="{OnIdiom 0.6, Phone=0.5}"
InnerRadius="0.7" >
InnerRadius="0.7">
<chart:DoughnutSeries.LabelTemplate>
<DataTemplate >
<HorizontalStackLayout>
<Label Text="{Binding Item.Title}" TextColor="{AppThemeBinding
<DataTemplate>
<HorizontalStackLayout x:DataType="chart:ChartDataLabel">
<Label Text="{Binding Item, Converter={StaticResource ChartDataLabelConverter}, ConverterParameter='title'}"
TextColor="{AppThemeBinding
Light={StaticResource DarkOnLightBackground},
Dark={StaticResource LightOnDarkBackground}}" FontSize="{OnIdiom 18, Phone=14}"/>
<Label Text=": " TextColor="{AppThemeBinding
Dark={StaticResource LightOnDarkBackground}}"
FontSize="{OnIdiom 18, Phone=14}"/>
<Label Text=": "
TextColor="{AppThemeBinding
Light={StaticResource DarkOnLightBackground},
Dark={StaticResource LightOnDarkBackground}}" FontSize="{OnIdiom 18, Phone=14}"/>
<Label Text="{Binding Item.Count}" TextColor="{AppThemeBinding
Dark={StaticResource LightOnDarkBackground}}"
FontSize="{OnIdiom 18, Phone=14}"/>
<Label Text="{Binding Item, Converter={StaticResource ChartDataLabelConverter}, ConverterParameter='count'}"
TextColor="{AppThemeBinding
Light={StaticResource DarkOnLightBackground},
Dark={StaticResource LightOnDarkBackground}}" FontSize="{OnIdiom 18, Phone=14}"/>
Dark={StaticResource LightOnDarkBackground}}"
FontSize="{OnIdiom 18, Phone=14}"/>
</HorizontalStackLayout>
</DataTemplate>
</chart:DoughnutSeries.LabelTemplate>

<chart:DoughnutSeries.DataLabelSettings>
<chart:CircularDataLabelSettings LabelPosition="Outside" SmartLabelAlignment="Shift">
<chart:CircularDataLabelSettings LabelPosition="Outside"
SmartLabelAlignment="Shift">
<chart:CircularDataLabelSettings.ConnectorLineSettings>
<chart:ConnectorLineStyle ConnectorType="Line" StrokeWidth="3" ></chart:ConnectorLineStyle>
<chart:ConnectorLineStyle ConnectorType="Line"
StrokeWidth="3"></chart:ConnectorLineStyle>
</chart:CircularDataLabelSettings.ConnectorLineSettings>
</chart:CircularDataLabelSettings>
</chart:DoughnutSeries.DataLabelSettings>
Expand Down
28 changes: 28 additions & 0 deletions 10.0/Apps/DeveloperBalance/Pages/Controls/ChartDataLabelConverter.cs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
using System;
using System.Globalization;
using DeveloperBalance.Models;

namespace DeveloperBalance.Pages.Controls;

public class ChartDataLabelConverter : IValueConverter
{
public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
{
if (value is CategoryChartData categoryData && parameter is string parameterValue)
{
return parameterValue?.ToLower() switch
{
"title" => categoryData.Title,
"count" => categoryData.Count.ToString(),
_ => value?.ToString()
};
}

return value?.ToString();
}

public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
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