How to create a .NET MAUI SfCartesianChart using the JSON data?

​This article explains how to bind the JSON data to the .NET MAUI charts.

JSON data cannot be bound directly to the SfCartesianChart, so you should deserialize the JSON data to a bindable format. Use the open-source NuGet Newtonsoft.Json to serialize and deserialize the JSON objects.

The following steps explain how to pass JSON data to the SfCartesianChart.

JSON data

{
 'Country': 'USA',
 'Count': 46
}, {
 'Country': 'China',
 'Count': 36
}, {
 'Country': 'Japan',
 'Count': 63
}, {
 'Country': 'Australia',
 'Count': 54
}, {
 'Country': 'France',
 'Count': 50
}

Step 1: Add the Newtonsoft.Json reference to your project.

Step 2: Create a data model to store JSON data.

public class Medal
{
    public string Country { get; set; }
    public int Count { get; set; }
}

Step 3: Create a ViewModel to store a collection of model objects.

public class ViewModel
{
    public ObservableCollection<Medal> Medal { get; set; }
}

Step 4: Deserialize the JSON data as a collection of data models.

using Newtonsoft.Json;
…{
     …
     string jsonData = @"{'Medal':[{'Country':'USA','Count':46},{'Country':'China','Count':36},{'Country':'Japan','Count':63},{'Country':'Australia','Count':54},{'Country':'France','Count':50}]}";
 
     var jsonDataCollection = JsonConvert.DeserializeObject<ViewModel>(jsonData);
     chart.BindingContext = jsonDataCollection;
}

Step 5: Bind the deserialized JSON data to the ChartSeries ItemsSource property and set the XBindingPath and YBindingPath properties, so that the chart would fetch values from the respective properties in the data model to plot the series.

<chart:SfCartesianChart x:Name="chart">
    …
    <chart:ColumnSeries ItemsSource="{Binding Medal}"
                        XBindingPath="Country" 
                        YBindingPath="Count">
    </chart:ColumnSeries>
</chart:SfCartesianChart>

Output

View sample in GitHub

See also

How to create a Column Chart in MAUI (SfCartesianChart)?

How to bind the SQLite Database to the MAUI Chart (SfCartesianChart)?

Conclusion

I hope you enjoyed learning about how to Create a .NET MAUI Chart Using the JSON Data (SfCartesianChart).

You can refer to our .NET MAUI Chart’s feature tour page to know about its other groundbreaking feature representations. You can also explore our .NET MAUI Chart documentation to understand how to present and manipulate data. 

For current customers, you can check out our .NET MAUI components from the License and Downloads page. If you are new to Syncfusion, you can try our 30-day free trial to check out our .NET MAUI Chart and other .NET MAUI components.

If you have any queries or require clarifications, please let us know in comments below. You can also contact us through our support forums, Direct-Trac, or feedback portal. We are always happy to assist you!