ASP.NET Core Smart TextArea – An AI-Enhanced Text Area Control
- Provides intelligent sentence suggestions based on predefined configurations.
- Delivers fast and accurate predictions in real time.
- Offers fully customizable suggestion options.
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Overview
The ASP.NET Core Smart TextArea is an AI-powered text area control that delivers real-time sentence autocomplete, boosting productivity and reducing typing effort.

ASP.NET Core Smart TextArea Code Example
Easily get started with the ASP.NET Core Smart TextArea using a few simple lines of C# code as shown below. Also explore our Smart TextArea example to learn how to render and configure the control.
@{
var presets = new {
userRole = "Maintainer of an open-source project replying to GitHub issues",
userPhrases = new[] { "Thank you for contacting us.", "To investigate, we'll need a repro as a public Git repo.", "Could you please post a screenshot of NEED_INFO?", "This sounds like a usage question. This issue tracker is intended for bugs and feature proposals. Unfortunately, we don't have the capacity to answer general usage questions and would recommend StackOverflow for a faster response.", "We don't accept ZIP files as repros." },
placeHolder = "Write your response to the GitHub issue..." };
}
<ejs-smarttextarea id="smartTextarea" user-role="@presets.userRole" user-phrases="@presets.userPhrases" width="75%" placeholder="@presets.placeHolder" floatLabelType="Auto" rows="5"></ejs-smarttextarea>Intelligent autocomplete
The Smart TextArea provides more than simple word suggestions. It intelligently predicts complete sentences based on user input. Whether you are writing emails, completing forms, or creating content, its AI-powered autocomplete significantly reduces typing time by offering context-aware and accurate suggestions. These predictions are highly relevant and precise, ensuring a smooth and efficient text entry experience.
Inherited features
Built on top of Syncfusion’s ASP.NET Core TextArea control, the Smart TextArea inherits all TextArea features, including form support, floating labels, and customizable styling.
User role
The user role option sets the autocompletion context based on the writer’s role. Example roles include:
- Customer service agent replying to client inquiries.
- Project manager drafting a team status update.
User phrases
User phrases include predefined expressions that match your application’s tone and commonly used content, such as standard phrases, important URLs, or policies. For example:
- “Thank you for your interest.”
- “Please let me know if you have any further questions.”
These predefined phrases deliver personalized, contextually relevant autocompletion.
Customizable UI
Tailor the appearance of suggestions in the customizable suggestion pop-up to control the user experience.

Suggestions in pop-up
Display suggestions in a pop-up window.

Suggestions inline
Show suggestions inline.
Built-in themes
The Smart Textarea comes with a variety of built-in themes, including Material 3, Bootstrap 5, Fabric (Office 365), Tailwind CSS 3, and High Contrast. You can easily customize these themes or create your own by overriding Sass variables or using the Theme Studio application.
Accessibility
Designed with accessibility in mind, ensuring compliance with modern web accessibility standards such as WAI-ARIA. Supports full keyboard navigation and screen reader compatibility, making the control usable for individuals with disabilities.
Other supported frameworks
The Smart TextArea is available for the React, Angular, JavaScript, and Vue frameworks. Explore its platform-specific options through the following links:
Supported browsers
The ASP.NET Core Smart TextArea works well with all modern web browsers, including Chrome, Firefox, Edge, Safari, and Opera.

Not sure how to create your first ASP.NET Core Smart TextArea? Our documentation can help.
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Frequently Asked Questions
Why should you choose Syncfusion ASP.NET Core Smart TextArea?
The Syncfusion ASP.NET Core Smart TextArea control supports the following features:
- Provides intelligent sentence-level suggestions for faster typing and improved efficiency.
- Adapts suggestions based on user roles and phrases, enhancing its versatility in use cases like customer support or content creation.
- Integrates seamlessly with ASP.NET Core applications.
- Lets you control the suggestion pop-up display for touch and non-touch devices.
Inherits all standard Syncfusion TextArea control features, ensuring familiar customization and integration.
- One of the best ASP.NET Core Smart TextArea 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 and documentation to learn quickly and get started with ASP.NET Core Smart TextArea.
Where can I find the Syncfusion ASP.NET Core Smart TextArea demo?
You can find our ASP.NET Core Smart TextArea demo, which demonstrates how to render and configure the Smart TextArea.
What is the ASP.NET Core Smart TextArea?
ASP.NET Core Smart TextArea is an AI-powered control that offers smart sentence suggestions from a predefined list, boosting productivity and reducing typing effort.
What are the benefits of using the Smart TextArea in ASP.NET Core forms?
The Smart TextArea enhances the user experience, improves accessibility with ARIA support, and integrates seamlessly with ASP.NET Core’s validation framework for error handling. It ensures cross-browser compatibility, efficient performance, and smooth integration within forms, making it ideal for applications requiring flexible and user-friendly text input.
Can I download and utilize the Syncfusion ASP.NET Core Smart TextArea for free?
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.
How do I get started with Syncfusion ASP.NET Core Smart TextArea?
A good place to start would be our comprehensive getting started documentation.
How does the ASP.NET Core Smart TextArea work?
It displays contextually relevant and precise sentences based on user input, minimizing the typing time.
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