We use cookies to give you the best experience on our website. If you continue to browse, then you agree to our privacy policy and cookie policy. Image for the cookie policy date
Unfortunately, activation email could not send to your email. Please try again.
Syncfusion Feedback

Trusted by the world’s leading companies

Syncfusion Trusted Companies


The Blazor ComboBox component is a dropdown list with an editable option that also allows users to choose an option from a predefined pop-up list. It can be used as an alternative to the HTML select tag and has several out-of-the-box features such as data binding, filtering, grouping, cascading, templates, UI customization, pop-up list and customization.

Custom value

This editable combo box in Blazor allows the entry of a custom value when the option the user searched for is not available in the pop-up list. You can also set a value for the combo box or get the selected value from the combo box at any time through the interactive APIs.

Custom ComboBox control in Blazor that allows custom values in the pop-up list


Built-in filtering support with a rich set of filtering configurations is available to meet all your application needs.

Blazor ComboBox filtering search based on custom algorithm

Custom filtering

Filter queries are customizable, and you can use your own filter libraries to filter data.

Blazor ComboBox filtering with diacritic symbol sensitivity

Diacritic sensitivity

The Blazor ComboBox component supports diacritic character sensitivity. This behavior can be turned on or off.

Blazor ComboBox filtering with case sensitivity and minimum search characters

Filter settings

The filter search can be customized with case sensitivity and can be performed with minimum query string characters.

Simple Blazor ComboBox Grouping of pop-up list items based on category

Grouping with categories

Group the pop-up list items with a corresponding category that makes it easy for users to pick an item quickly from the dropdown and also improves the visual experience for users.


The autofill option allows users to easily search through options in the combo box. When a user is typing a query string to search, the available matching options will be filled automatically.

Blazor ComboBox autofill option while typing

Cascading combo boxes

Provides an option to create multiple cascading combo boxes in Blazor, which helps users populate data for a child combo box based on the current selected value of the parent combo box.

High performance Blazor ComboBox with form validation

Forms support

Since the ComboBox is a form component, it supports HTML forms, template-driven forms (Angular), and reactive forms.

Mobile responsive UI

The Blazor ComboBox component supports a responsive mode that provides an adaptive, redesigned UI appearance for mobile devices and touch actions.

Web accessibility

  • Fully supports WAI-ARIA accessibility guidelines to work with screen readers and assistive devices.

  • Follows WAI-ARIA best practices for implementing keyboard interaction.

  • Follows WCAG 2.0 standard in UI element visual design such as for foreground color, background color, line spacing, text, and images.

  • Supports right-to-left (RTL) rendering for users working in right-to-left languages like Hebrew, Arabic, or Persian.

Developer-friendly APIs

Developers can customize all UI elements and control their behaviors according to the end user’s requirements using the control’s rich set of client-side APIs.

Blazor ComboBox Code Example

Easily get started with the Blazor ComboBox using a few simple lines of C# code example as demonstrated below. Also explore our Blazor ComboBox Example that shows you how to render and configure the Blazor ComboBox component.

@using Syncfusion.Blazor.DropDowns
<SfComboBox TValue="string" TItem="GameFields" Placeholder="e.g. Basketball" @bind-Value="@ComboBoxValue" DataSource="@Games">
<ComboBoxFieldSettings Text="Text" Value="ID"/>

    public class GameFields
        public string ID { get; set; }
        public string Text { get; set; }
   private List<GameFields> Games = new List<GameFields>()
        new GameFields(){ ID= "Game1", Text= "American Football" },
        new GameFields(){ ID= "Game2", Text= "Badminton" },
        new GameFields(){ ID= "Game3", Text= "Basketball" },
        new GameFields(){ ID= "Game4", Text= "Cricket" },
        new GameFields(){ ID= "Game5", Text= "Football" },
        new GameFields(){ ID= "Game6", Text= "Golf" },
        new GameFields(){ ID= "Game7", Text= "Hockey" },
        new GameFields(){ ID= "Game8", Text= "Rugby"},
        new GameFields(){ ID= "Game9", Text= "Snooker" },
        new GameFields(){ ID= "Game10", Text= "Tennis"}

Other supported frameworks

The ComboBox control is also available in our Angular, React, Vue, and JavaScript frameworks, which were built from their own TypeScript libraries. Check out the ComboBox control in these different platforms from the following links.

Struggling to decide on the right product?

Our comprehensive competitor comparison of Blazor components will guide you to the perfect choice.

tick-mark 85+ UI components
tick-mark 960+ interactive Blazor demos
tick-mark 1.9M+ downloads

Blazor Components – 85+ UI and DataViz Components

Frequently Asked Questions

Syncfusion Blazor ComboBox provides the following features:

  • A great alternative to the HTML select tag, with a modern look and feel.
  • Editable combo box with advanced features, including auto suggestion, grouping, filtering, sorting and more.
  • The UI rich ComboBox control in Blazor has been provided virtualization to improve the UI performance for a large amount of data.
  • Supports complete customization of the UI and pop-up list through different template options.
  • One of the best Blazor ComboBox in the market that offers feature-rich UI to interact with the software.
  • Simple configuration and API.
  • Supports all modern browsers.
  • Mobile-touch friendly and responsive.
  • Extensive demos, documentation and video to learn quickly and get started with Blazor ComboBox component.

We do not sell the Blazor ComboBox separately. It is only available for purchase as part of the Syncfusion team license. This contains over 1,800 components and frameworks, including the Blazor ComboBox. The price of the team license starts at $395 per month for 5 developers, and includes support and updates until the subscription expires. In addition, we might offer discounts based on currently active promotions. Please contact our product specialists today to see if you qualify for any additional discounts.

You can find our Blazor ComboBox demo here.

No, our 1,800+ components and frameworks for web, mobile, and desktop, including our Blazor ComboBox, are not sold individually. They are only available as part of a team license. However, we have competitively priced the product, so it only costs a little bit more than what some other vendors charge for their ComboBox component alone. We have also found that, in our experience, our customers usually start off using one of our products and then expand to several products quickly, so we felt it was best to offer all 1,800+ components and frameworks for a subscription fee that starts at $395 per month for a team of 5 developers. Additionally, we might be able to offer discounts based on currently active promotions. Please contact our product specialists today to see if you qualify for any additional discounts.

No, this is a commercial product and requires a paid license. However, a free community license is also available for companies and individuals whose organizations have less than $1 million USD in annual gross revenue, 5 or fewer developers, and 10 or fewer total employees.

A good place to start would be our comprehensive getting started documentation.

Our Customers Love Us

Having an excellent set of tools and a great support team, Syncfusion reduces customers’ development time.
Here are some of their experiences.

Rated by users across the globe

Transform your applications today by downloading our free evaluation version
Download Free Trial No credit card required.


Greatness—it’s one thing to say you have it, but it means more when others recognize it. Syncfusion is proud to hold the following industry awards.

Up arrow icon
Live Chat Icon For mobile