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The WPF spline area chart is designed for visualizing quantitative data. It is an area chart type that plots a fitted curve through each data point in a series. It is used to represent time-dependent data and show trends in data at equal intervals.

Beautiful WPF spline area chart.

Key features

Shows the WPF vertical spline area chart.

Vertical spline area chart

Rotate the spline area chart to plot data in a vertical direction and view data from a different perspective.

The WPF spline area chart shows an empty or null point.

Empty/Null point chart

The spline area chart handles empty or null data points elegantly.

Shows the customizable spline area chart in WPF.

UI styling

Customize the color and thickness of the spline area chart using the built-in APIs to make it visually unique.

The WPF spline area chart with multiple axis support.

Multiple axes

Use multiple axes to plot different data sets that widely vary from one another.

The WPF spline area chart with markers.

Display markers

The WPF spline area chart data points are visualized as marks with the built-in symbols such as cross, square, plus, inverted triangles, hexagon, ellipses, vertical lines, horizontal lines, diamonds, triangles, and pentagons.

Code example

<Window x:Class="ChartExample.MainWindow"
        Title="WPF Spline Area Chart" Height="450" Width="700">
    <!--Setting DataContext-->
        <chart:SfChart Height="300" Width="500">
            <!--Initialize the horizontal axis for the WPF Chart-->
                <chart:CategoryAxis />

            <!--Initialize the vertical axis for the WPF Chart-->
                <chart:NumericalAxis />
            <!--Adding Spline Area Series to the WPF Chart-->
                    ItemsSource="{Binding Data}" 
public class Model
    public string Month { get; set; }

    public double Target { get; set; }

    public Model(string xValue, double yValue)
        Month = xValue;
        Target = yValue;

public class ViewModel
    public ObservableCollection<Model> Data { get; set; }

    public ViewModel()
        Data = new ObservableCollection<Model>()
            new Model("Jan", 50),
            new Model("Feb", 70),
            new Model("Mar", 65),
            new Model("Apr", 57),
            new Model("May", 48), 

Learning resources

Navigate to GitHub code used to configure the WPF spline area chart.

GitHub code

The WPF spline area chart configuration code is available in GitHub.

Navigate to the options available in the user guide to customize the WPF spline area chart.

Spline Area Chart User Guide

Learn more about the available options to customize WPF spline area charts.

Navigate to the API reference documentation of the WPF spline area chart.

Spline Area Chart API references

Explore the WPF spline area chart APIs.


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