How to bind Blazored Typeahead to a remote API in Blazor?

Implement a SearchMethod that makes an HTTP call, as shown in the remote data example—use HttpClient to fetch data and return it as an IEnumerable, with optional debounce tuning to control request frequency.

Blazored Typeahead vs standard HTML select in Blazor?

Blazored Typeahead adds autocomplete, templates, and form integration, making it better for search-heavy UIs, while HTML select is simpler for static lists without typeahead needs. However, Typeahead requires more setup and JavaScript.

Can I use Blazored Typeahead without an EditForm?

Yes, it can be used standalone as shown in the remote data example, but for full validation integration, wrapping it in an EditForm is recommended to leverage Blazor's built-in validation system.

How to customize the styling of Blazored Typeahead?

Add custom CSS by overriding the included blazored-typeahead.css or using the provided CSS classes—the README requires CSS file inclusion, so you'll need to write or modify styles manually for visual tweaks.

Is Blazored Typeahead accessible for screen readers?

While the README doesn't specify accessibility features, as a Blazor component, it likely follows standard practices, but you should test with ARIA attributes and ensure templates are semantically correct for your use case.

How to handle validation errors with Blazored Typeahead?

Integrate it within an EditForm and use ValidationMessage components, as demonstrated in the local data example—this leverages Blazor's validation system to display errors based on the bound value.

Open-Awesome

Blazored.Typeahead

MITC#v4.7.0

A customizable typeahead/autocomplete component for Blazor applications with local and remote data support.

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445 stars109 forks0 contributors

What is Blazored.Typeahead?

Blazored Typeahead is a reusable typeahead (autocomplete) component for Blazor applications that helps users quickly find and select items from a list. It solves the problem of implementing responsive search-as-you-type functionality in Blazor apps, supporting both local collections and remote data sources.

Target Audience

Blazor developers building web applications that require autocomplete/search functionality in forms or interactive interfaces.

Value Proposition

Developers choose Blazored Typeahead because it's specifically designed for Blazor's component model, integrates seamlessly with Blazor forms and validation, and offers extensive customization through templates and configuration options.

Overview

Typeahead control for Blazor applications

Use Cases

Best For

Adding searchable dropdowns to Blazor forms
Implementing autocomplete for product searches in e-commerce Blazor apps
Creating user search interfaces with remote API integration
Building admin panels with filterable selection controls
Adding typeahead functionality to Blazor Server or WebAssembly applications
Implementing accessible autocomplete components following Blazor patterns

Not Ideal For

Applications built with non-Blazor frameworks like React or Angular
Projects requiring simple static dropdowns without autocomplete functionality
Environments with strict no-JavaScript policies or server-side rendering only
Teams seeking pre-styled, out-of-the-box components with zero CSS work

Pros & Cons

Pros

Deep Blazor Integration

Seamlessly works with Blazor's EditForm and validation system, as shown in the local data example where it integrates with ValidationMessage for form handling.

Flexible Templating Control

Provides multiple templates (ResultTemplate, SelectedTemplate, etc.) allowing full customization of rendering, which is essential for complex UI requirements.

Performance Optimization Features

Includes configurable debounce delay and minimum search length to reduce unnecessary searches, optimizing both local and remote data calls.

Advanced Data Binding

Supports complex scenarios with ConvertMethod for binding to different types, enabling searches on objects but binding to specific properties like IDs.

Cons

Manual Asset Setup

Requires explicit inclusion of CSS and JS files in Blazor Server or Client projects, adding setup overhead compared to some pure C# Blazor components.

JavaScript Dependency

Relies on JavaScript for interactive features, which might conflict with teams preferring all-C# solutions or facing JS compatibility issues.

Template Complexity

Mandatory ResultTemplate and SelectedTemplate definitions mean extra boilerplate code for simple use cases, increasing initial development time.

Frequently Asked Questions

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