Migrate from Xamarin.Forms SfChart to .NET MAUI SfFunnelChart

8 Jul 202618 minutes to read

The Funnel Chart was created from scratch using the upgraded APIs and performance of the .NET MAUI graphics library and framework layouts. However, minor code changes are required. Additionally, the single SfChart control has been split into five specialized chart controls in .NET MAUI for improved user experience and clarity.

Xamarin .NET MAUI
SfChart
SfCartesianChart
SfCircularChart
SfFunnelChart
SfPyramidChart
SfPolarChart

To make migration easier, most of the APIs from Xamarin.Forms SfChart have been retained in .NET MAUI SfFunnelChart. Most features have been implemented, though some are pending or have limitations. Please refer to the API migration information and feature status below.

API migration

To initialize the control, import the Chart namespace and initialize SfFunnelChart, as shown in the following code samples.

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:SfFunnelChart/>
</ContentPage>
using Syncfusion.Maui.Charts;

SfFunnelChart chart = new SfFunnelChart();
// Configure data binding and properties here
this.Content = chart;

The following table illustrates the API migration for the chart.

Xamarin .NET MAUI
ColorModel, CustomBrushes PaletteBrushes
ChartBehaviors TooltipBehavior, SelectionBehavior

Series

The following properties are given in SfFunnelChart.

Xamarin.Forms .NET MAUI
Color -
ColorModel PaletteBrushes
SelectedDataPointColor SelectionBrush
DataMarker ShowDataLabels, DataLabelSettings

The following code example explains how to migrate the series of Xamarin SfChart to the .NET MAUI SfFunnelChart.

Xamarin 
<chart:SfChart>
    <chart:FunnelSeries ItemsSource="{Binding Data}" 
                        XBindingPath="XValue" 
                        YBindingPath="YValue"/>
</chart:SfChart>
SfChart chart = new SfChart();

FunnelSeries series = new FunnelSeries();
series.ItemsSource = Data;
series.XBindingPath = "XValue";
series.YBindingPath = "YValue";
chart.Series.Add(series);
this.Content = chart;
.NET MAUI 
<chart:SfFunnelChart ItemsSource="{Binding Data}" 
                     XBindingPath="XValue" 
                     YBindingPath="YValue">
</chart:SfFunnelChart>
SfFunnelChart chart = new SfFunnelChart();
ChartViewModel viewModel = new ChartViewModel();
chart.BindingContext = viewModel;
chart.ItemsSource = viewModel.Data;
chart.XBindingPath = "XValue";
chart.YBindingPath = "YValue";
this.Content = chart;

Legend

Xamarin.Forms .NET MAUI
DockPosition Placement
IsVisible IsVisible
Title Upcoming
ToggleSeriesVisibility ToggleSeriesVisibility
OverflowMode Upcoming
MaxWidth Upcoming
Orientation Upcoming
IsIconVisible Upcoming
ItemMargin Upcoming
IconWidth Upcoming
IconHeight 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:SfFunnelChart>

    <chart:SfFunnelChart.Legend>
        <chart:ChartLegend/>
    </chart:SfFunnelChart.Legend>
</chart:SfFunnelChart>
SfFunnelChart chart = new SfFunnelChart();

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 SfFunnelChart, set the FunnelDataLabelSettings instance to the DataLabelSettings property, as shown below.

Xamarin.Forms 
<chart:SfChart>  
    <chart:FunnelSeries ItemsSource ="{Binding Data}" 
                        XBindingPath="XValue" 
                        YBindingPath="YValue">
	<chart:FunnelSeries.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:FunnelSeries.DataMarker>
    </chart:FunnelSeries>
</chart:SfChart>
SfChart chart = new SfChart();

FunnelSeries series = new FunnelSeries();

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:SfFunnelChart ItemsSource="{Binding Data}" 
                      XBindingPath="XValue" 
                      YBindingPath="YValue"
                      ShowDataLabels="True">
    <chart:SfFunnelChart.DataLabelSettings>
        <chart:FunnelDataLabelSettings>
            <chart:FunnelDataLabelSettings.LabelStyle>
                <chart:ChartDataLabelStyle TextColor="Blue" 
                                           Stroke="Red" 
                                           StrokeWidth="2" 
                                           Background="Aqua" 
                                           Margin="10" 
                                           FontSize="16"
                                           FontAttributes="Bold"/>
            </chart:FunnelDataLabelSettings.LabelStyle>
        </chart:FunnelDataLabelSettings>
    </chart:SfFunnelChart.DataLabelSettings>
 </chart:SfFunnelChart>
SfFunnelChart chart = new SfFunnelChart();
chart.ItemsSource = viewModel.Data;
chart.XBindingPath = "XValue";
chart.YBindingPath = "YValue";
chart.ShowDataLabels = true;

chart.DataLabelSettings = new FunnelDataLabelSettings();
var style = new ChartDataLabelStyle();
style.TextColor = Colors.Blue;
style.Stroke = Colors.Red;
style.StrokeWidth = 2;
style.Background = Colors.Aqua;
style.Margin = 10;
style.FontSize = 16;
style.FontAttributes = FontAttributes.Bold;

chart.DataLabelSettings.LabelStyle = style;
this.Content = chart;

Tooltip

To customize the tooltip appearance in Xamarin.Forms, create an instance of the ChartTooltipBehavior class and add it to the ChartBehaviors collection of SfChart. In .NET MAUI, directly set the ChartTooltipBehavior instance to the TooltipBehavior property, as shown below.

Xamarin.Forms 
<chart:SfChart>

    <chart:SfChart.ChartBehaviors>
        <chart:ChartTooltipBehavior BackgroundColor="Blue" 
                                    TextColor="White" 
                                    Margin="5"
                                    FontSize="15"/>
    </chart:SfChart.ChartBehaviors>
    
    <chart:FunnelSeries ItemsSource="{Binding Data}" 
                        XBindingPath="XValue"
                        YBindingPath="YValue"
                        EnableTooltip="True"/>
</chart:SfChart>
SfChart chart = new SfChart();

FunnelSeries series = new FunnelSeries ();

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:SfFunnelChart ItemsSource="{Binding Data1}" 
                     XBindingPath="XValue"  
                     YBindingPath="YValue"
                     EnableTooltip="True">
    <chart:SfFunnelChart.TooltipBehavior>
        <chart:ChartTooltipBehavior Background="Blue" 
                                    TextColor="White" 
                                    Margin="5" 
                                    FontSize="15"/>
    </chart:SfFunnelChart.TooltipBehavior>
</chart:SfFunnelChart>
SfFunnelChart chart = new SfFunnelChart();
chart.ItemsSource = viewModel.Data;
chart.XBindingPath = "XValue";
chart.YBindingPath = "YValue";
chart.EnableTooltip = true;

ChartTooltipBehavior tooltip = new ChartTooltipBehavior();
tooltip.Background = Colors.Blue;
tooltip.TextColor = Colors.White;
tooltip.Margin = new Thickness(5, 5, 5, 5);
tooltip.FontSize = 15;

chart.TooltipBehavior = tooltip;
this.Content = chart;

Selection

In Xamarin.Forms, create an instance of the ChartSelectionBehavior class and add it to the ChartBehaviors collection of SfChart. In .NET MAUI, directly set the DataPointSelectionBehavior instance to the SelectionBehavior property, as shown below.

Xamarin.Forms 
<chart:SfChart>
    <chart:SfChart.ChartBehaviors>
        <chart:ChartSelectionBehavior/>
    </chart:SfChart.ChartBehaviors>

    <chart:FunnelSeries EnableDataPointSelection="True" 
                        SelectedDataPointIndex="2" 
                        SelectedDataPointColor="Red" 
                        ItemsSource ="{Binding Data}" 
                        XBindingPath="XValue" 
                        YBindingPath="YValue"/>
</chart:SfChart>
SfChart chart = new SfChart();
FunnelSeries series = new FunnelSeries();

series.EnableDataPointSelection = true;
series.SelectedDataPointIndex = 2;
series.SelectedDataPointColor = Color.Red;
ChartSelectionBehavior selectionBehavior = new ChartSelectionBehavior();
chart.ChartBehaviors.Add(selectionBehavior);
chart.Series.Add(series);
this.Content = chart;
.NET MAUI 
xmlns:chart="clr-namespace:Syncfusion.Maui.Charts;assembly=Syncfusion.Maui.Charts"

<chart:SfFunnelChart ItemsSource="{Binding Data}" 
                     XBindingPath="XValue"      
                     YBindingPath="YValue">
    <chart:SfFunnelChart.SelectionBehavior>
        <chart:DataPointSelectionBehavior SelectedIndex="2" 
                                          SelectionBrush="Red"/>
    </chart:SfFunnelChart.SelectionBehavior>
</chart:SfFunnelChart>
SfFunnelChart chart = new SfFunnelChart();
chart.ItemsSource = viewModel.Data;
chart.XBindingPath = "XValue";
chart.YBindingPath = "YValue";

DataPointSelectionBehavior selection = new DataPointSelectionBehavior();
selection.SelectedIndex = 2;
selection.SelectionBrush = Colors.Red;

chart.SelectionBehavior = selection;
this.Content = chart;

Upcoming features in .NET MAUI

Chart

  • Listen to property change support for chart.
  • Notify event or method when chart is rendering.
  • Suspend and resume notification.
  • Support for chart animation.
  • Exploding segments on touch.
  • Funnel neck customization support.

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.

Data label

  • Connector lines customization support.

Unsupported features from Xamarin.Forms

  • In .NET MAUI, the ChartDataPoint model class is no longer available. Instead, create your own custom data model to represent chart data points. For example, define a class with properties for your X and Y values, then bind the collection to the chart’s ItemsSource property.

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.