Getting Started with ASP.NET Core Tab Control
23 Jul 202612 minutes to read
This section briefly explains how to include the ASP.NET Core Tab control in your ASP.NET Core Web App using Visual Studio.
Create ASP.NET Core Web App with Razor Pages
Create an ASP.NET Core Web App using Visual Studio via Microsoft Templates or the ASP.NET Core Extension.
Install the required ASP.NET Core packages
To add ASP.NET Core Tab control in the app, open the NuGet package manager in Visual Studio (Tools → NuGet Package Manager → Manage NuGet Packages for Solution), then search and install Syncfusion.AspNetCore.Navigations and Syncfusion.AspNetCore.Themes. All Syncfusion ASP.NET Core packages are available in nuget.org. See the NuGet packages topic for more details.
Alternatively, you can install the same packages using the Package Manager Console with the following commands.
Install-Package Syncfusion.AspNetCore.Navigations -Version 34.1.29
Install-Package Syncfusion.AspNetCore.Themes -Version 34.1.29Add ASP.NET Core tag helpers
After the packages are installed, open the ~/Pages/_ViewImports.cshtml file and import the Syncfusion.AspNetCore.Navigations and Syncfusion.AspNetCore.Base tag helpers.
@addTagHelper *, Syncfusion.AspNetCore.Navigations
@addTagHelper *, Syncfusion.AspNetCore.BaseAdd stylesheet and script resources
The theme stylesheet and script can be referenced from NuGet through Static Web Assets. Include the stylesheet and script references inside the <head> of ~/Pages/Shared/_Layout.cshtml file.
<head>
...
...
<link rel="stylesheet" href="_content/Syncfusion.AspNetCore.Themes/styles/fluent2.css" />
<script src="_content/Syncfusion.AspNetCore.Navigations/scripts/sf-tab.min.js"></script>
</head>Register the script manager
Open the ~/Pages/Shared/_Layout.cshtml file and register the script manager (<ejs-scripts>) at the end of the <body> element as shown below.
<body>
...
<!-- Syncfusion ASP.NET Core Script Manager -->
<ejs-scripts></ejs-scripts>
</body>Add the ASP.NET Core Tab control
Add the ASP.NET Core Tab control in the ~/Pages/Index.cshtml file.
@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 launch the application. The ASP.NET Core Tab control will render in your default web browser.

Initialize the Tab using JSON items collection
The Tab control can be rendered using a JSON array. Each tab item is defined with a TabHeader, which specifies the tab text and a content property, which defines the content displayed for the tab.
@using Syncfusion.EJ2.Navigations;
@{
....
List<TabItem> items = new List<TabItem>();
items.Add(new TabItem { 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 TabItem { 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 TabItem { 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 control 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.cshtmlfile 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>NOTE