Getting Started with ASP.NET Core Tab Control

29 Sep 202212 minutes to read

This section briefly explains about how to include ASP.NET Core Tab 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/ej2/20.3.56/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/ej2/20.3.56/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 Tab control

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

@using Syncfusion.EJ2.Navigations;

@{
    var content0 = "Twitter is an online social networking service that enables users to send and read short 140-character" +
            "messages called tweets.Registered users can read and post tweets, but those who are unregistered can only read" +
            "them.Users access Twitter through the website interface, SMS or mobile device app Twitter Inc. is based in San" +
            "Francisco and has more than 25 offices around the world.Twitter was created in March 2006 by Jack Dorsey," +
            "Evan Williams, Biz Stone, and Noah Glass and launched in July 2006. The service rapidly gained worldwide popularity," +
            "with more than 100 million users posting 340 million tweets a day in 2012.The service also handled 1.6 billion" +
            "search queries per day.";

    var content1 = "Facebook is an online social networking service headquartered in Menlo Park, California. Its website was" +
                "launched on February 4, 2004, by Mark Zuckerberg with his Harvard College roommates and fellow students Eduardo" +
                "Saverin, Andrew McCollum, Dustin Moskovitz and Chris Hughes.The founders had initially limited the websites" +
                "membership to Harvard students, but later expanded it to colleges in the Boston area, the Ivy League, and Stanford" +
                "University.It gradually added support for students at various other universities and later to high - school students.";

    var content2 = "WhatsApp Messenger is a proprietary cross-platform instant messaging client for smartphones that operates" +
            "under a subscription business model.It uses the Internet to send text messages, images, video, user location and" +
            "audio media messages to other users using standard cellular mobile numbers. As of February 2016, WhatsApp had a user" +
            "base of up to one billion,[10] making it the most globally popular messaging application.WhatsApp Inc., based in" +
            "Mountain View, California, was acquired by Facebook Inc.on February 19, 2014, for approximately US$19.3 billion.";
	var headerText0 = new TabHeader { Text = "Twitter" };
    var headerText1 = new TabHeader { Text = "Facebook" };
    var headerText2 = new TabHeader { Text = "Whatsapp" };
}

<ejs-tab id="ej2Tab">
    <e-tab-tabitems>
        <e-tab-tabitem header="headerText0" content="@content0"></e-tab-tabitem>
        <e-tab-tabitem header="headerText1" content="@content1"></e-tab-tabitem>
        <e-tab-tabitem header="headerText2" content="@content2"></e-tab-tabitem>
    </e-tab-tabitems>
</ejs-tab>

<style>
    #container {
        visibility: hidden;
    }

    #loader {
        color: #008cff;
        height: 40px;
        left: 45%;
        position: absolute;
        top: 45%;
        width: 30%;
    }

    .e-content .e-item {
        font-size: 12px;
        margin: 10px;
        text-align: justify;
    }

    .container {
        min-width: 350px;
        max-width: 500px;
        margin: 0 auto;
    }
</style>

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

ASP.NET Core Tab Control

Initialize the Tab using JSON items collection

The Tab can be rendered by defining a JSON array. The item is rendered with header text and content for each Tab.

@using Syncfusion.EJ2.Navigations;

@{
    ....
    List<TabTabItem> items = new List<TabTabItem>();
    items.Add(new TabTabItem { Header = new TabHeader { Text = "Twitter" }, Content = "Twitter is an online social networking service that enables users to send and read short 140-character messages called 'tweets'. Registered users can read and post tweets, but those who are unregistered can only read them. Users access Twitter through the website interface, SMS or mobile device app Twitter Inc. is based in San Francisco and has more than 25 offices around the world. Twitter was created in March 2006 by Jack Dorsey, Evan Williams, Biz Stone, and Noah Glass and launched in July 2006. The service rapidly gained worldwide popularity, with more than 100 million users posting 340 million tweets a day in 2012.The service also handled 1.6 billion search queries per day." });
    items.Add(new TabTabItem { Header = new TabHeader { Text = "Facebook" }, Content = "Facebook is an online social networking service headquartered in Menlo Park, California. Its website was launched on February 4, 2004, by Mark Zuckerberg with his Harvard College roommates and fellow students Eduardo Saverin, Andrew McCollum, Dustin Moskovitz and Chris Hughes.The founders had initially limited the website's membership to Harvard students, but later expanded it to colleges in the Boston area, the Ivy League, and Stanford University. It gradually added support for students at various other universities and later to high-school students." });
    items.Add(new TabTabItem { Header = new TabHeader { Text = "Whatsapp" }, Content = "WhatsApp Messenger is a proprietary cross-platform instant messaging client for smartphones that operates under a subscription business model. It uses the Internet to send text messages, images, video, user location and audio media messages to other users using standard cellular mobile numbers. As of February 2016, WhatsApp had a user base of up to one billion,[10] making it the most globally popular messaging application. WhatsApp Inc., based in Mountain View, California, was acquired by Facebook Inc. on February 19, 2014, for approximately US$19.3 billion." });
}

<ejs-tab id="ej2Tab" items="items"></ejs-tab>

<style>
    .e-content .e-item {
        font-size: 12px;
        padding: 10px;
        text-align: justify;
    }
</style>

Initialize the Tab using HTML elements

The Tab component can be rendered based on the given HTML element using id as target. Header section must be enclosed with in a wrapper element using e-tab-header class and corresponding content must be mapped with e-content class. You need to follow the below structure of HTML elements to render the Tab,

<div id='ej2Tab'>   --> Root Tab element
  <div class="e-tab-header">      --> Tab header
      <div>   --> Header Item
      </div>
  </div>
  <div class="e-content">      --> Tab content
      <div>   --> Content Item
      </div>
  </div>
</div>
  • Add the HTML template data with its id attribute and add it in your index.cshtml file to initialize the Tab.
<div id="ej2Tab">
    <div class="e-tab-header">
        <div>Twitter </div>
        <div>Facebook </div>
        <div>WhatsApp </div>
    </div>
    <div class="e-content">
        <div>
            Twitter is an online social networking service that enables users to send and read short 140-character messages called 'tweets'. Registered users can read and post tweets, but those who are unregistered can only read them. Users access Twitter through the website interface, SMS or mobile device app Twitter Inc. is based in San Francisco and has more than 25 offices around the world. Twitter was created in March 2006 by Jack Dorsey, Evan Williams, Biz Stone, and Noah Glass and launched in July 2006. The service rapidly gained worldwide popularity, with more than 100 million users posting 340 million tweets a day in 2012.The service also handled 1.6 billion search queries per day.
        </div>
        <div>
            Facebook is an online social networking service headquartered in Menlo Park, California. Its website was launched on February 4, 2004, by Mark Zuckerberg with his Harvard College roommates and fellow students Eduardo Saverin, Andrew McCollum, Dustin Moskovitz and Chris Hughes.The founders had initially limited the website's membership to Harvard students, but later expanded it to colleges in the Boston area, the Ivy League, and Stanford University. It gradually added support for students at various other universities and later to high-school students.
        </div>
        <div>
            WhatsApp Messenger is a proprietary cross-platform instant messaging client for smartphones that operates under a subscription business model. It uses the Internet to send text messages, images, video, user location and audio media messages to other users using standard cellular mobile numbers. As of February 2016, WhatsApp had a user base of up to one billion,[10] making it the most globally popular messaging application. WhatsApp Inc., based in Mountain View, California, was acquired by Facebook Inc. on February 19, 2014, for approximately US$19.3 billion.
        </div>
    </div>
</div>

<style>
    .e-content .e-item {
        font-size: 12px;
        padding: 10px;
        text-align: justify;
    }
</style>


<script type="text/javascript">
    var tabObj = new ej.navigations.Tab({
        heightAdjustMode: "Auto"
    });
    tabObj.appendTo('#ej2Tab');
</script>

View Sample in GitHub.

See also