Blazor Charts Component in Server Side App using Visual Studio

16 Sep 202114 minutes to read

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

Importing Syncfusion Blazor component in the application

Install the Syncfusion.Blazor NuGet package to the application by using the NuGet Package Manager.

You can add the client-side resources through CDN or from NuGet package in the HEAD element of the ~/Pages/_Host.cshtml page. For Internet Explorer 11, kindly refer the polyfills. Refer the documentation for more information.

 <head>
     <environment include="Development">
     ....
     ....
     <script src="https://github.com/Daddoon/Blazor.Polyfill/releases/download/3.0.1/blazor.polyfill.min.js"></script>
     </environment>
 </head>

Now add the lodash script to the HEAD element of the /Pages/Host.cshtml page, since we have used it in our chart interactive features. The absence of the script will result in console errors.

 <head>
 <environment include="Development">
     ....
     ....
     <script src="https://github.com/Daddoon/Blazor.Polyfill/releases/download/3.0.1/blazor.polyfill.min.js"></script>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.20/lodash.min.js"></script>
 </environment>
 </head>

Adding component package to the application

Open **~/_Imports.razor file and include the Syncfusion.Blazor.** namespaces.

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

Add SyncfusionBlazor service in Startup.cs

Open the Startup.cs file and add services required by Syncfusion components using service.AddSyncfusionBlazor() method. Add this method in the ConfigureServices function as follows.

using Syncfusion.Blazor;
namespace BlazorApplication
{
    public class Startup
    {
        ....
        ....
        public void ConfigureServices(IServiceCollection services)
        {
            ....
            ....
            services.AddSyncfusionBlazor();
        }
    }
}

During initial loading, we collect and send individual character size information in-order to render the chart. To avoid any disconnection, increase the buffer size to 64 KB or more over the SignalR connection.

using Syncfusion.Blazor;
namespace BlazorApplication
{
    public class Startup
    {
        ....
        ....
        public void ConfigureServices(IServiceCollection services)
        {
            ....
            ....
            services.AddSyncfusionBlazor();
            services.AddSignalR(e => {
              e.MaximumReceiveMessageSize = 65536;
            });
        }
    }
}

Use the following configuration to host your Blazor server application on Azure SignalR.

using Syncfusion.Blazor;
namespace BlazorApplication
{
    public class Startup
    {
        ....
        ....
        public void ConfigureServices(IServiceCollection services)
        {
            ....
            ....
            services.AddSyncfusionBlazor();
            services.AddSignalR(e => {e.MaximumReceiveMessageSize = 65536;}).AddAzureSignalR();
        }
    }
}

Add Chart Component

To initialize the chart component add the below code to your Index.razor view page under ~/Pages folder. In a new application, if Index.razor page has any default content template, then those content can be completely removed and following code can be added.

@page "/"

<SfChart>

</SfChart>

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

Getting Started

Populate Chart with Data

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

public class SalesInfo
{
    public string Month { get; set; }
    public double SalesValue { get; set; }
}

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 data fields Month and Sales to the series XName and YName properties, then set the data to the DataSource property, and the chart type to Column because we will be viewing the data in a column chart.

@page "/"
@using Syncfusion.Blazor.Charts

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

@code {
    public class SalesInfo
    {
        public string Month { get; set;}
        public double SalesValue { get; set;}
    }
    
    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 }
    };
}

chart

Add Titles

Using the Title property, you can add a title to the chart and the axes to provide the user with quick information about the data plotted in the chart.

@page "/"
@using Syncfusion.Blazor.Charts

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

@code {
    public class SalesInfo
    {
        public string Month { get; set;}
        public double SalesValue { get; set;}
    }

    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 }
    };
}

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 ChartDataLabel.

@page "/"
@using Syncfusion.Blazor.Charts

<SfChart Title="Sales Analysis">
    <ChartPrimaryXAxis Title="Month" ValueType="Syncfusion.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>
</SfChart>

@code {
    public class SalesInfo
    {
        public string Month { get; set; }
        public double SalesValue { get; set; }
    }

    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 }
    };
}

chart

When space constraints prevent you from displaying information using data labels, the tooltip comes in handy. The tooltip can be enabled by setting the Enable property in ChartTooltipSettings to true.

@page "/"
@using Syncfusion.Blazor.Charts

<SfChart Title="Sales Analysis">
    <ChartPrimaryXAxis Title="Month" ValueType="Syncfusion.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>
</SfChart>

@code {
    public class SalesInfo
    {
        public string Month { get; set; }
        public double SalesValue { get; set; }
    }

    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 }
    };
}

chart

Enable Legend

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

@page "/"
@using Syncfusion.Blazor.Charts

    <SfChart Title="Sales Analysis">
        <ChartPrimaryXAxis Title="Month" ValueType="Syncfusion.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>
    </SfChart>

@code {
    public class SalesInfo
    {
        public string Month { get; set;}
        public double SalesValue { get; set;}
    }
    
    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 }
    };
}

chart

You can find the fully working sample here. And also you can refer to our Blazor Chart feature tour page for its groundbreaking feature representations. You can also explore our Blazor Chart Example to knows various chart types and how to represent time-dependent data, showing trends in data at equal intervals.

Blazor Charts Component in Server Side App using Visual Studio

Importing Syncfusion Blazor component in the application

Adding component package to the application

Add SyncfusionBlazor service in Startup.cs

Add Chart Component

Populate Chart with Data

Add Titles

Add Data Label

Enable Tooltip

Enable Legend

See also