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Getting Started in Blazor Charts

This section briefly explains about how to include a Chart in your Blazor client-side application. You can refer Getting Started with Syncfusion Blazor for Client-Side in Visual Studio 2019 Preview page for the introduction and configuring the common specifications.

Importing Syncfusion Blazor component in the application

  1. Install Syncfusion.EJ2.Blazor NuGet package to the application by using the NuGet Package Manager. Please ensure to check the Include prerelease option.
  2. You can add the client-side resources through CDN in the <head> element of the ~/wwwroot/index.html page.
<head>
    <script src="https://cdn.syncfusion.com/ej2/17.2.34/dist/ej2.min.js"></script>
</head>

Adding component package to the application

Open **~/_Imports.razor file and import the Syncfusion.EJ2.Blazor.**

@using Syncfusion.EJ2.Blazor
@using Syncfusion.EJ2.Blazor.Charts

Adding Chart component to the application

Now, add the Syncfusion Blazor components in any web page (razor) in the Pages folder. For example, the Chart component is added in the ~/Pages/Index.razor page.

<EjsChart></EjsChart>

Run the application

After successful compilation of your application, the Syncfusion Blazor chart component will render in the web browser.

chart

Populate Chart With Data

To bind data for the Chart component, you can assign a IEnumerable object to the DataSource property. The list data source can also be provided as an instance of the DataManager.

public class SalesInfo
    {
        public string Month;
        public double SalesValue;
    }
public List<SalesInfo> Sales = new List<SalesInfo>
    {
        new SalesInfo { Month = "Jan", SalesValue = 35 },
        new SalesInfo { Month = "Feb", SalesValue = 28 },
        new SalesInfo { Month = "Mar", SalesValue = 34 },
        new SalesInfo { Month = "Apr", SalesValue = 32 },
        new SalesInfo { Month = "May", SalesValue = 40 },
        new SalesInfo { Month = "Jun", SalesValue = 32 },
        new SalesInfo { Month = "Jul", SalesValue = 35 }
    };

Now map the field Month and Sales in the data to the XName and YName properties of the series, then set the data to DataSource property. As we are going to view the data in column chart, set the Type of the chart as Column.

<EjsChart>
  <ChartPrimaryXAxis ValueType="Syncfusion.EJ2.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>
     <ChartSeriesCollection>
         <ChartSeries DataSource="@Sales" XName="Month" YName="SalesValue" Type="ChartSeriesType.Column">
         </ChartSeries>
    </ChartSeriesCollection>
</EjsChart>

chart

Add Chart and Axis Titles

You can add a title using Title property to the chart and an axis to provide quick information to the user about the data plotted in the chart.

<EjsChart Width="60%" Title="Sales Analysis">
  <ChartPrimaryXAxis Title="Month" ValueType="Syncfusion.EJ2.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>
  
  <ChartPrimaryYAxis Title="Sales in Dollar"></ChartPrimaryYAxis>
  
  <ChartSeriesCollection>
     <ChartSeries DataSource="@Sales" XName="Month" YName="SalesValue" Type="ChartSeriesType.Column">
     </ChartSeries>
  </ChartSeriesCollection>
</EjsChart>

chart

Add Data Label

You can add data labels to improve the readability of the chart. This can be achieved by setting the Visible property to true in the DataLabel.

<EjsChart Width="60%" Title="Sales Analysis">
    <ChartPrimaryXAxis Title="Month" ValueType="Syncfusion.EJ2.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>

    <ChartPrimaryYAxis Title="Sales in Dollar"></ChartPrimaryYAxis>

    <ChartSeriesCollection>
        <ChartSeries DataSource="@Sales" XName="Month" YName="SalesValue" Type="ChartSeriesType.Column">
            <ChartMarker>
                <ChartDataLabel Visible="true"></ChartDataLabel>
            </ChartMarker>
        </ChartSeries>
    </ChartSeriesCollection>
</EjsChart>

chart

Enable Tooltip

The tooltip is useful when you cannot display information by using the data labels due to space constraints. You can enable tooltip by setting the Enable property as true in TooltipSettings.

<EjsChart Width="60%" Title="Sales Analysis">
    <ChartPrimaryXAxis Title="Month" ValueType="Syncfusion.EJ2.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>

    <ChartPrimaryYAxis Title="Sales in Dollar"></ChartPrimaryYAxis>

    <ChartTooltipSettings Enable="true"></ChartTooltipSettings>

    <ChartSeriesCollection>
        <ChartSeries DataSource="@Sales" XName="Month" YName="SalesValue" Type="ChartSeriesType.Column">
        </ChartSeries>
    </ChartSeriesCollection>
</EjsChart>

chart

Enable Legend

You can use legend for the chart by setting the Visible property to true in LegendSettings. The name of the legend can be set by using Name property in the series.

<EjsChart Width="60%" Title="Sales Analysis">
    <ChartPrimaryXAxis Title="Month" ValueType="Syncfusion.EJ2.Blazor.Charts.ValueType.Category"></ChartPrimaryXAxis>

    <ChartPrimaryYAxis Title="Sales in Dollar"></ChartPrimaryYAxis>

    <ChartLegendSettings Visible="true"></ChartLegendSettings>

    <ChartSeriesCollection>
        <ChartSeries DataSource="@Sales" Name="Sales" XName="Month" YName="SalesValue" Type="ChartSeriesType.Column">
        </ChartSeries>
    </ChartSeriesCollection>
</EjsChart>

chart

You can find the fully working sample here.

See also