The ASP.NET Core MultiSelect Dropdown is a quick replacement for the HTML select tag for selecting multiple values. HTML MultiSelect Dropdown is a textbox control that allows the user to type or select multiple values from a list of predefined options. It has several out-of-the-box features such as data binding, filtering, grouping, tagging with custom values, and checkbox mode.
You can bind data from a variety of data sources like an array of primitive data, JSON data collections, or a remote data source using various kinds of adaptors such as OData, OData V4, URL, JSON, and Web API. This uses ASP.NET Core data manager to manage data and has customization option for data request and processing.
Various render modes are available to visualize selected items.
Selected items are displayed as a chip (box) type in the MultiSelect input box.
The selected items are displayed with a delimiter character in the MultiSelect input box.
By default, the selected items are displayed as chip type when the control is in focus. Otherwise, they’re displayed with a delimiter character.
The ASP.NET Core MultiSelect Dropdown has built-in filtering support with a rich set of filtering configurations available.
The ASP.NET Core MultiSelect Dropdown filter query can be customized. You can also use your own filter libraries to filter data like Fuzzy search.
The ASP.NET Core MultiSelect Dropdown control has built-in diacritic character sensitivity support. This behavior can be turned on or off.
The filter search can be customized with case sensitivity, and the number of characters needed to make the filter search can be set.
Use templates to change the appearance of the selection pop-up list items, the header and footer of the selection pop-up list, and the Multiselect Dropdown input box selected values.
Design your own header for a pop-up list using a header template.
Define the custom appearance of each list item using an item template.
Design your own custom footer for a pop-up list using footer template.
Define the custom appearance of selected values using a value template.
Configure the custom look of a pop-up list when no items are available to display in the filter search functionality.
Each list item of a pop-up list can be configured with a custom icon or image to improve readability and visualization.
You can limit the number of items that can be selected in a drop-down.
You can customize the selected chip (value) element appearance on value selection action.
Tag the new values that are not present in the predefined list.
Group the popup list items with the corresponding category which masks easy to pick the item quickly from the dropdown, also increase the visual experience of the user.
The width and height of a pop-up option list are customizable.
The ASP.NET Core MultiSelect Dropdown is a form control, seamlessly supporting HTML forms and obtaining values on form submission.
You can display items in the ascending or descending order in a popup list.
A responsive mode gives an adaptive, redesigned UI appearance for mobile devices and recognizes touch gestures.
Developers can customize all UI elements and control their behaviors using the control’s rich set of client-side APIs.
The ASP.NET Core MultiSelect control is shipped with several built-in themes such as material, bootstrap, fabric (Office 365), and high contrast. Customize any one of these built-in themes or create new themes by either simply overriding SASS variables or using our Theme Studio application.
Fully supports WAI-ARIA accessibility that makes list view accessible to on-screen readers and assistive devices.
Follows WAI-ARIA best practices best practices for implementing keyboard interaction.
Follows WCAG 2.0standard in design for the UI element visuals such as foreground color, background color, line spacing, text, and images.
Supports right-to-left (RTL) direction for users working in right-to-left languages like Hebrew, Arabic, or Persian.
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