30 Oct 202414 minutes to read
The Polar Chart was created from the scratch using the upgraded APIs and performance of the .NET MAUI graphics library and framework layouts. However, a minor code change is required. In addition, SfChart has been divided into five chart controls in .NET MAUI for a better user experience and understanding.
| Xamarin |
.NET MAUI |
|
SfChart
|
SfCartesianChart
SfCircularChart
SfFunnelChart
SfPyramidChart
SfPolarChart
|
To make the migration easier, the majority of the APIs from the Xamarin SfChart were kept in the .NET MAUI SfPolarChart. Currently, most of the features have been added in the SfPolarChart, but only a few are pending in the .NET MAUI along with some limitations. Please refer to the following details and the API migration information available below.
API migration
To initialize the control, import the Chart namespace and Initialize SfPolarChart as shown in the following code sample.
| Xamarin |
<ContentPage
. . .
xmlns:chart="clr-namespace:Syncfusion.SfChart.XForms;assembly=Syncfusion.SfChart.XForms">
<chart:SfChart/>
</ContentPage>
using Syncfusion.SfChart.XForms;
...
SfChart chart = new SfChart();
this.Content = chart;
|
| .NET MAUI |
<ContentPage
. . .
xmlns:chart="clr-namespace:Syncfusion.Maui.Charts;assembly=Syncfusion.Maui.Charts">
<chart:SfPolarChart/>
</ContentPage>
using Syncfusion.Maui.Charts;
. . .
SfPolarChart chart = new SfPolarChart();
this.Content = chart;
|
The following table illustrates the API migration for the chart.
| Xamarin |
.NET MAUI |
| Title |
Title |
| Legend |
Legend |
| Series |
Series |
| PrimaryAxis |
PrimaryAxis |
| SecondaryAxis |
SecondaryAxis |
| ColorModel, CustomBrushes |
PaletteBrushes |
| ChartBehaviors |
TooltipBehavior |
Axis
| Xamarin |
.NET MAUI |
| VisibleMinimum |
VisibleMinimum |
| VisibleMaximum |
VisibleMaximum |
| VisibleLabels |
VisibleLabels |
| LabelClicked |
Upcoming |
| TickPosition |
TickPosition |
| MaximumLabels |
Upcoming |
| LabelsIntersectAction |
Upcoming |
The following code example explains how to migrate the axis of Xamarin SfChart to .NET MAUI SfPolarChart.
| Xamarin |
<chart:SfChart>
<chart:SfChart.PrimaryAxis>
<chart:CategoryAxis/>
</chart:SfChart.PrimaryAxis>
<chart:SfChart.SecondaryAxis>
<chart:NumericalAxis/>
</chart:SfChart.SecondaryAxis>
</chart:SfChart>
SfChart chart = new SfChart();
CategoryAxis primaryAxis = new CategoryAxis();
chart.PrimaryAxis = primaryAxis;
NumericalAxis secondaryAxis = new NumericalAxis();
chart.SecondaryAxis = secondaryAxis;
this.Content = chart;
|
| .NET MAUI |
<chart:SfPolarChart>
<chart:SfPolarChart.PrimaryAxis>
<chart:CategoryAxis/>
</chart:SfPolarChart.PrimaryAxis>
<chart:SfPolarChart.SecondaryAxis>
<chart:NumericalAxis/>
</chart:SfPolarChart.SecondaryAxis>
</chart:SfPolarChart>
SfPolarChart chart = new SfPolarChart();
CategoryAxis primaryAxis = new CategoryAxis();
chart.PrimaryAxis = primaryAxis;
NumericalAxis secondaryAxis = new NumericalAxis();
chart.SecondaryAxis = secondaryAxis;
this.Content = chart;
|
Series
| Xamarin |
.NET MAUI |
| Color |
Fill |
| DataMarker |
ShowDataLabels, DataLabelSettings |
| IsClosed |
IsClosed |
The following code example explains how to migrate the series of Xamarin SfChart to .NET MAUI SfPolarChart.
| Xamarin |
<chart:SfChart>
. . .
<chart:PolarAreaSeries ItemsSource="{Binding PlantDetails}" XBindingPath="Direction" YBindingPath="Tree">
</chart:PolarAreaSeries>
</chart:SfChart>
SfChart chart = new SfChart();
. . .
PolarAreaSeries series = new PolarAreaSeries();
series.SetBinding(ChartSeries.ItemsSourceProperty, "PlantDetails");
series.XBindingPath = "Direction";
series.YBindingPath = "Tree";
chart.Series.Add(series);
this.Content = chart;
|
| .NET MAUI |
<chart:SfPolarChart>
<chart:PolarAreaSeries ItemsSource="{Binding PlantDetails}" XBindingPath="Direction" YBindingPath="Tree" ShowDataLabels="True">
</chart:PolarAreaSeries>
</chart:SfPolarChart>
SfPolarChart chart = new SfPolarChart();
. . .
PolarAreaSeries series = new PolarAreaSeries();
series.ItemsSource = (new ViewModel()).PlantDetails;
series.XBindingPath = "Direction";
series.YBindingPath = "Tree";
series.ShowDataLabels = true;
chart.Series.Add(series);
this.Content = chart;
|
Legend
| Xamarin |
.NET MAUI |
| ToggleSeriesVisibility |
ToggleSeriesVisibility |
| DockPosition |
Placement |
| IsVisible |
IsVisible |
| ItemTemplate |
ItemTemplate |
| Title |
Upcoming |
| OverflowMode |
Upcoming |
| MaxWidth |
Upcoming |
| Orientation |
Upcoming |
| IsIconVisible |
Upcoming |
| ItemMargin |
Upcoming |
| IconWidth |
Upcoming |
| IconTree |
Upcoming |
| OffsetX |
Upcoming |
| OffsetY |
Upcoming |
The following code example shows how to enable legend in chart.
| Xamarin |
<chart:SfChart>
<chart:SfChart.Legend>
<chart:ChartLegend/>
</chart:SfChart.Legend>
</chart:SfChart>
SfChart chart = new SfChart();
. . .
chart.Legend = new ChartLegend();
this.Content = chart;
|
| .NET MAUI |
<chart:SfPolarChart>
<chart:SfPolarChart.Legend>
<chart:ChartLegend/>
</chart:SfPolarChart.Legend>
</chart:SfPolarChart>
SfPolarChart chart = new SfPolarChart();
. . .
chart.Legend = new ChartLegend();
this.Content = chart;
|
Data Label
To customize the data label appearance, create an instance of the ChartDataMarker class and add it to the DataMarker of Series. For SfPolarChart, you can set the PolarDataLabelSettings instance to the DataLabelSettings property, as shown in the below code sample.
| Xamarin |
<chart:SfChart>
. . .
<chart:PolarAreaSeries ItemsSource="{Binding PlantDetails}" XBindingPath="Direction" YBindingPath="Tree">
<chart:PolarAreaSeries.DataMarker>
<chart:ChartDataMarker ShowLabel="True">
<chart:ChartDataMarker.LabelStyle>
<chart:DataMarkerLabelStyle TextColor="Blue" BorderColor="Red" BorderThickness="2"
BackgroundColor="Aqua" Angle="315" Margin="5"
FontSize="18" FontAttributes="Italic"/>
</chart:ChartDataMarker.LabelStyle>
</chart:ChartDataMarker>
</chart:PolarAreaSeries.DataMarker>
</chart:PolarAreaSeries>
</chart:SfChart>
SfChart chart = new SfChart();
. . .
PolarAreaSeries series = new PolarAreaSeries();
. . .
series.DataMarker = new ChartDataMarker();
series.DataMarker.ShowLabel = true;
var style = new DataMarkerLabelStyle();
style.TextColor = Color.Blue;
style.BorderColor = Color.Red;
style.BorderThickness = 2;
style.BackgroundColor = Color.Aqua;
style.Angle = 315;
style.Margin = 5;
style.FontSize = 18;
series.DataMarker.LabelStyle = style;
chart.Series.Add(series);
this.Content = chart;
|
| .NET MAUI |
<chart:SfPolarChart>
. . .
<chart:PolarAreaSeries ItemsSource="{Binding PlantDetails}" XBindingPath="Direction" YBindingPath="Tree"
ShowDataLabels="True">
<chart:PolarAreaSeries.DataLabelSettings>
<chart:PolarDataLabelSettings>
<chart:PolarDataLabelSettings.LabelStyle>
<chart:ChartDataLabelStyle TextColor="Blue" Stroke="Red" StrokeWidth="2" Background="Aqua"
Angle="315" Margin="5" FontSize="18" FontAttributes="Italic"/>
</chart:PolarDataLabelSettings.LabelStyle>
</chart:PolarDataLabelSettings>
</chart:PolarAreaSeries.DataLabelSettings>
</chart:PolarAreaSeries>
</chart:SfPolarChart>
SfPolarChart chart = new SfPolarChart();
. . .
PolarAreaSeries series = new PolarAreaSeries();
. . .
series.ShowDataLabels = true;
series.PolarDataLabelSettings = new PolarDataLabelSettings();
var style = new ChartDataLabelStyle();
style.TextColor = Color.Blue;
style.Stroke = Color.Red;
style.StrokeWidth = 2;
style.Background = Color.Aqua;
style.Angle = 315;
style.Margin = 5;
style.FontSize = 18;
series.PolarDataLabelSettings.LabelStyle = style;
chart.Series.Add(series);
this.Content = chart;
|
To customize the tooltip appearance, create an instance of the ChartTooltipBehavior class and add it to the ChartBehaviors collection of SfChart. For SfPolarChart, you can directly set the ChartTooltipBehavior instance to the TooltipBehavior property, as shown in the below code sample.
| Xamarin |
<chart:SfChart>
. . .
<chart:SfChart.ChartBehaviors>
<chart:ChartTooltipBehavior BackgroundColor="Blue" TextColor="White" Margin="5"
FontSize="15"/>
</chart:SfChart.ChartBehaviors>
<chart:PolarAreaSeries ItemsSource="{Binding Data}" XBindingPath="Demand" YBindingPath="Year2010"
EnableTooltip="True"/>
</chart:SfChart>
SfChart chart = new SfChart();
. . .
PolarAreaSeries series = new PolarAreaSeries();
. . .
series.EnableTooltip = true;
chart.Series.Add(series);
ChartTooltipBehavior tool = new ChartTooltipBehavior();
tool.BackgroundColor = Color.Blue;
tool.TextColor = Color.White;
tool.Margin = new Thickness(5, 5, 5, 5);
tool.FontSize = 15;
chart.ChartBehaviors.Add(tool);
this.Content = chart;
|
| .NET MAUI |
<chart:SfPolarChart>
. . .
<chart:SfPolarChart.TooltipBehavior>
<chart:ChartTooltipBehavior Background="Blue" TextColor="White" Margin="5"
FontSize="15"/>
</chart:SfPolarChart.TooltipBehavior>
<chart:PolarAreaSeries ItemsSource="{Binding PlantDetails}" XBindingPath="Direction" YBindingPath="Tree"
EnableTooltip="True"/>
</chart:SfPolarChart>
SfPolarChart chart = new SfPolarChart();
. . .
PolarAreaSeries series = new PolarAreaSeries();
. . .
series.EnableTooltip = true;
chart.Series.Add(series);
ChartTooltipBehavior tooltip = new ChartTooltipBehavior();
tooltip.BackgroundColor = Color.Blue;
tooltip.TextColor = Color.White;
tooltip.Margin = new Thickness(5, 5, 5, 5);
tooltip.FontSize = 15;
chart.TooltipBehavior = tooltip;
this.Content = chart;
|
Upcoming features in .NET MAUI
Chart
- Suspend and resume notification support.
Series
- Listen to property change support for series.
- Notify event or method when series are rendering.
- Suspend and resume notification.
Axis
- DateTime category axis support.
- Range style customization.
- Event or method to notify the axis label click.
Legend
- Title support for legend.
- Support to enable or disable the legend icon visibility.
- Legend floating support.
- Event or method to notify when a legend item is clicked.
Known issue
- #FB49487 - Gradient Support for Line-Based Series in .NET MAUI Chart.
- Data label created event support was not provided in series. Instead, you can use the DrawDataLabel override method in the ChartSeries class.
- In.NET MAUI, the ChartDataPoint model class was no longer available. Instead, create your own model.
Limitations
| Features |
Comments |
| LabelRotation |
This feature supports for secondary axis only. |
| AxisLineStyle |
This feature supports for secondary axis only. |
| AxisLineOffset |
This feature supports for secondary axis only.
|
| CrossesAt |
This feature is currently not supported for Polar charts. |
| RenderNextToCrossingValue |
This feature is currently not supported for Polar charts. |
| CrossAxisName |
This feature is currently not supported for Polar charts. |
| Axis Title |
This feature supports for secondary axis only. |
| EdgeLabelsDrawingMode |
This feature supports for secondary axis only. |
| EnableAutoIntervalOnZooming |
This feature is currently not supported for Polar charts.
|
| LabelPlacement |
This feature is currently not supported for Primary axis. |
| ArrangeByIndex |
This feature is currently not supported for Primary axis.
|
| AutoScrollingDeltaType |
This feature is currently not supported for DateTime axis. |
| SelectionBehavior(Upcoming) |
This feature is currently not supported for Polar Charts. |
| AutoScrollingDelta |
This feature is currently not supported for Polar Charts. |
| AutoScrollingMode |
This feature is currently not supported for Polar Charts. |
| ZoomPosition |
This feature is currently not supported for Polar Charts. |
| ZoomFactor |
This feature is currently not supported for Polar Charts. |
| ShowTrackballLabel |
This feature is not supported for Polar Charts. |
| TrackballLabelStyle |
This feature is not supported for Polar Charts. |
Support and feedback
If you are unable to find the migration information you require in the self-help resources listed above, please contact us by creating a support ticket. Do not see what you need? Please request it in our feedback portal.