Getting Started with ASP.NET Core Sparkline Control

22 Apr 202214 minutes to read

This section briefly explains about how to include ASP.NET Core Sparkline control in your ASP.NET Core application using Visual Studio.

Prerequisites

System requirements for ASP.NET Core controls

Create ASP.NET Core web application with Razor pages

Install ASP.NET Core package in the application

Syncfusion ASP.NET Core controls are available in nuget.org. Refer to NuGet packages topic to learn more about installing NuGet packages in various OS environments. To add ASP.NET Core controls in the application, open the NuGet package manager in Visual Studio (Tools → NuGet Package Manager → Manage NuGet Packages for Solution), search for Syncfusion.EJ2.AspNet.Core and then install it.

The Syncfusion.EJ2.AspNet.Core NuGet package has dependencies, Newtonsoft.Json for JSON serialization and Syncfusion.Licensing for validating Syncfusion license key.

Add Syncfusion ASP.NET Core Tag Helper

Open ~/Views/_ViewImports.cshtml file and import the Syncfusion.EJ2 TagHelper.

@addTagHelper *, Syncfusion.EJ2

Add style sheet

Checkout the Themes topic to learn different ways (CDN, NPM package, and CRG) to refer styles in ASP.NET Core application, and to have the expected appearance for Syncfusion ASP.NET Core controls. Here, the theme is referred using CDN inside the <head> of ~/Pages/Shared/_Layout.cshtml file as follows,

<head>
    ...
    <!-- Syncfusion ASP.NET Core controls styles -->
    <link rel="stylesheet" href="https://cdn.syncfusion.com/ej2/20.1.55/fluent.css" />
</head>

Add script reference

In this getting started walk-through, the required scripts are referred using CDN inside the <head> of ~/Pages/Shared/_Layout.cshtml file as follows,

<head>
    ...
    <!-- Syncfusion ASP.NET Core controls scripts -->
    <script src="https://cdn.syncfusion.com/ej2/20.1.55/dist/ej2.min.js"></script>
</head>

Register Syncfusion Script Manager

Open ~/Pages/Shared/_Layout.cshtml page and register the script manager at the end of `<body>` in the ASP.NET Core application as follows.

<body>
...
    <!-- Syncfusion ASP.NET Core Script Manager -->
    <ejs-scripts></ejs-scripts>
</body>

Add ASP.NET Core Sparkline Control

Now, add the Syncfusion ASP.NET Core Sparkline tag helper in ~/Pages/Index.cshtml page.

<ejs-sparkline id="sparkline">
</ejs-sparkline>

Bind data source to Sparkline

The dataSource property is used for binding data source to the sparkline. This property takes the collection value as input. For example, the list of objects can be provided as input.

@{
    ...
    var data = DataSource.GetData();
}

<div class="spark" align="center">
    <ejs-sparkline id="sparkline" loaded="loaded" height="100px" width="70%" dataSource="data" xName="xval" yName="yval"></ejs-sparkline>
</div>
<style>
    .spark {
        border: 1px solid rgb(209, 209, 209);
        border-radius: 2px;
        width: 100%;
        height: 100%;
    }
</style>
<script>
    function loaded(args)
    { 
        window.sparkline = args.sparkline;
        args.sparkline.loaded = null;
        args.sparkline.refresh();
    }
</script>
public class DataSource
{
    public int x;
    public string xval;
    public double yval;
    public static List<DataSource> GetData()
    {
        List<DataSource> data1 = new List<DataSource>();
        data1.Add(new DataSource() { x = 0, xval = "2005", yval = 20090440 });
        data1.Add(new DataSource() { x = 1, xval = "2006", yval = 20264080 });
        data1.Add(new DataSource() { x = 2, xval = "2007", yval = 20434180 });
        data1.Add(new DataSource() { x = 3, xval = "2008", yval = 21007310 });
        data1.Add(new DataSource() { x = 4, xval = "2009", yval = 21262640 });
        data1.Add(new DataSource() { x = 5, xval = "2010", yval = 21515750 });
        data1.Add(new DataSource() { x = 6, xval = "2011", yval = 21766710 });
        data1.Add(new DataSource() { x = 7, xval = "2012", yval = 22015580 });
        data1.Add(new DataSource() { x = 8, xval = "2013", yval = 22262500 });
        data1.Add(new DataSource() { x = 9, xval = "2014", yval = 22507620 });
        return data1;
    }
}

Press Ctrl+F5 (Windows) or +F5 (macOS) to run the app. Then, the Syncfusion ASP.NET Core Sparkline control will be rendered in the default web browser.

ASP.NET Core Sparkline Control

Change the type of Sparkline

You can change the sparkline type by setting the type property to Line, Column, WinLoss, Pie, or Area. Here, the sparkline type has been set to area.

@{
    ...
    var data = DataSource.GetData();
}

<div class="spark" align="center">
    <ejs-sparkline id="sparkline" loaded="loaded" type="Area" height="100px" width="70%" dataSource="data" xName="xval" yName="yval"></ejs-sparkline>
</div>
<style>
    .spark {
        border: 1px solid rgb(209, 209, 209);
        border-radius: 2px;
        width: 100%;
        height: 100%;
    }
</style>
<script>
    function loaded(args)
    { 
        window.sparkline = args.sparkline;
        args.sparkline.loaded = null;
        args.sparkline.refresh();
    }
</script>
public class DataSource
{
    public int x;
    public string xval;
    public double yval;
    public static List<DataSource> GetData()
    {
        List<DataSource> data1 = new List<DataSource>();
        data1.Add(new DataSource() { x = 0, xval = "2005", yval = 20090440 });
        data1.Add(new DataSource() { x = 1, xval = "2006", yval = 20264080 });
        data1.Add(new DataSource() { x = 2, xval = "2007", yval = 20434180 });
        data1.Add(new DataSource() { x = 3, xval = "2008", yval = 21007310 });
        data1.Add(new DataSource() { x = 4, xval = "2009", yval = 21262640 });
        data1.Add(new DataSource() { x = 5, xval = "2010", yval = 21515750 });
        data1.Add(new DataSource() { x = 6, xval = "2011", yval = 21766710 });
        data1.Add(new DataSource() { x = 7, xval = "2012", yval = 22015580 });
        data1.Add(new DataSource() { x = 8, xval = "2013", yval = 22262500 });
        data1.Add(new DataSource() { x = 9, xval = "2014", yval = 22507620 });
        return data1;
    }
}

ASP.NET Core Area Sparkline

Enable tooltip for Sparkline

The sparkline displays additional information through tooltip when the mouse is hovered over the sparkline. You can enable tooltip by setting the visible property to true in tooltipSettings object.

@{
    ...
    var data = DataSource.GetData();
}

<div class="spark" align="center">
    <ejs-sparkline id="sparkline" loaded="loaded" type="Area" height="100px" width="70%" dataSource="data" xName="xval" yName="yval">
            <e-sparkline-tooltipsettings visible="true" format="${xval} : ${yval}"></e-sparkline-tooltipsettings>
    </ejs-sparkline>
</div>
<style>
    .spark {
        border: 1px solid rgb(209, 209, 209);
        border-radius: 2px;
        width: 100%;
        height: 100%;
    }
</style>
<script>
    function loaded(args)
    { 
        window.sparkline = args.sparkline;
        args.sparkline.loaded = null;
        args.sparkline.refresh();
    }
</script>
public class DataSource
{
    public int x;
    public string xval;
    public double yval;
    public static List<DataSource> GetData()
    {
        List<DataSource> data1 = new List<DataSource>();
        data1.Add(new DataSource() { x = 0, xval = "2005", yval = 20090440 });
        data1.Add(new DataSource() { x = 1, xval = "2006", yval = 20264080 });
        data1.Add(new DataSource() { x = 2, xval = "2007", yval = 20434180 });
        data1.Add(new DataSource() { x = 3, xval = "2008", yval = 21007310 });
        data1.Add(new DataSource() { x = 4, xval = "2009", yval = 21262640 });
        data1.Add(new DataSource() { x = 5, xval = "2010", yval = 21515750 });
        data1.Add(new DataSource() { x = 6, xval = "2011", yval = 21766710 });
        data1.Add(new DataSource() { x = 7, xval = "2012", yval = 22015580 });
        data1.Add(new DataSource() { x = 8, xval = "2013", yval = 22262500 });
        data1.Add(new DataSource() { x = 9, xval = "2014", yval = 22507620 });
        return data1;
    }
}

ASP.NET Core Sparkline with Tooltip

View Sample in GitHub.

See also