Getting Started with ASP.NET Core Checkbox Control
23 Jul 20263 minutes to read
This section briefly explains how to include the ASP.NET Core Checkbox control in your ASP.NET Core application using Visual Studio.
Create an ASP.NET Core Web App with Razor pages
Create an ASP.NET Core Web App using Visual Studio via Microsoft Templates or the Syncfusion® ASP.NET Core Extension. For detailed instructions, refer to the ASP.NET Core Web App Getting Started documentation.
Install the required ASP.NET Core packages
To add ASP.NET Core Checkbox control in the app, open the NuGet package manager in Visual Studio (Tools → NuGet Package Manager → Manage NuGet Packages for Solution), search for and install the Syncfusion.AspNetCore.Buttons and Syncfusion.AspNetCore.Themes packages. All Syncfusion ASP.NET Core packages are available on nuget.org. See the NuGet packages topic for details.
Alternatively, you can install the same packages using the Package Manager Console with the following command.
Install-Package Syncfusion.AspNetCore.Buttons -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.Base and Syncfusion.AspNetCore.Buttons Tag Helpers.
@addTagHelper *, Syncfusion.AspNetCore.Base
@addTagHelper *, Syncfusion.AspNetCore.ButtonsAdd stylesheet and script resources
The theme stylesheet and script can be referenced from CDN. Include the stylesheet and script references inside the <head> of ~/Pages/Shared/_Layout.cshtml file.
<head>
...
@* ASP.NET Core controls styles *@
<link rel="stylesheet" href="_content/Syncfusion.AspNetCore.Themes/styles/fluent2.css" />
@* ASP.NET Core controls scripts *@
<script src="_content/Syncfusion.AspNetCore.Buttons/scripts/sf-check-box.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 follows.
<body>
...
@* ASP.NET Core Script Manager *@
<ejs-scripts></ejs-scripts>
</body>Add ASP.NET Core Checkbox control
Add the ASP.NET Core Checkbox control in the ~/Pages/Index.cshtml file.
<ejs-checkbox id="default" label="Default" checked="true"></ejs-checkbox>Run the application
Press Ctrl+F5 (Windows) or ⌘+F5 (macOS) to launch the application. The ASP.NET Core Checkbox control will render in your default web browser.
Change the Checkbox state
The Checkbox has three visual states:
- Checked
- Unchecked
- Indeterminate
The Checkbox checked property is used to handle the checked and unchecked states.
When checked, a tick mark is displayed in the Checkbox.
Indeterminate
The Checkbox indeterminate state can be set through the indeterminate property. The Checkbox indeterminate state masks the real value of the Checkbox visually. The Checkbox cannot be changed to the indeterminate state through the user interface; this state can be achieved only through the property.
<ul>
<li>
<ejs-checkbox id="checked" checked="true" label="Checked State"></ejs-checkbox>
</li>
<li>
<ejs-checkbox id="unchecked" label="Unchecked State"></ejs-checkbox>
</li>
<li>
<ejs-checkbox id="indeterminate" indeterminate="true" label="Intermediate State"></ejs-checkbox>
</li>
</ul>
<style>
.e-checkbox-wrapper {
margin-top: 18px;
}
li {
list-style: none;
}
</style>NOTE