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How to pass a JSON array to Xamarin.Forms Chart?

Platform: Xamarin.Forms |
Control: SfChart |
Published Date: August 26, 2019 |
Last Revised Date: August 26, 2019

JSON data cannot be bound directly to SfChart, so we should deserialize the JSON data to a bindable format. You can use the open source NuGet Newtonsoft.Json to serialize and deserialize the JSON objects.


The following steps explain how to pass JSON data to SfChart.


JSON data

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


Step 1: Create a data model to store JSON data.

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


Step 2: Create a ViewModel to store a collection of model objects.

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


Step 3: Deserialize the JSON data as a collection of data models.

public ChartPage()
   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);
   BindingContext = jsonDataCollection;


Step 4: Bind the deserialized JSON data to the ChartSeries using the XBindingPath and YBindingPath properties.

<chart:SfChart x:Name="chart">
    . . .
     <chart:ColumnSeries x:Name="series"  ItemsSource="{Binding Medal}" XBindingPath="Country" YBindingPath="Count"/> 

You can download the complete sample.


Bind the JSON data to Xamarin.Forms Chart.

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