Syncfusion.AspNetCore.FormRenderer 35.1.39

Syncfusion ASP.NET Core Form Renderer component

A schema-driven form rendering component for ASP.NET Core that builds complete, interactive forms from a declarative form schema — including built-in and custom validations, conditional fields, dynamic expressions, and dependent dropdowns.

Using this package with an AI coding agent

Before generating Syncfusion code, ask your AI coding agent to run the Syncfusion setup using the following prompt:

Set up this project for Syncfusion before generating code. Fetch and follow the official instructions at https://ai.syncfusion.com, then report the detected platform, installed skill pack, MCP status, and any required licensing action.

The setup detects your project's platform and loads the appropriate Syncfusion skill pack. No Syncfusion account or MCP key is required to install or read Syncfusion agent skills.

Platform reference: https://ai.syncfusion.com/aspnet-core/llms.txt

Key features

• Schema-Driven Rendering: Render forms from a form schema object, or any raw JSON format
• Flexible Layouts: SingleColumn, TwoColumn, ThreeColumn, and FourColumn layouts, with a default layout used when the schema does not specify one
• Built-In Validations: Validations such as required, email, URL, number, min/max length, regex, and more, all declared in the schema can be handled in the component.
• Expressions – Compute field values dynamically from other fields using formula/expression support in the schema.
• Conditions – Show, hide, enable, disable, or require fields based on the value of other fields using conditional rules.
• Dependent Dropdowns: Cascade dropdown options so that a child field's choices update based on a parent field's selected value
• Form Events: Hook into created, onChange, onButtonClick, and onSubmit events to react to user interaction
• Localization & RTL: Override the global culture via locale and render right-to-left with enableRtl

Common setup

1. Install NuGet package

dotnet add package Syncfusion.AspNetCore.FormRenderer

2. Register tag helpers

Add to ~/Pages/_ViewImports.cshtml or ~/Views/_ViewImports.cshtml:

@addTagHelper *, Syncfusion.AspNetCore.FormRenderer

3. Add stylesheet & script references

In your layout file:

<head>
    <link rel="stylesheet" href="_content/Syncfusion.AspNetCore.Themes/styles/fluent2.css" />
    <script src="_content/Syncfusion.AspNetCore.FormRenderer/scripts/sf-form-renderer.min.js"></script>
</head>

4. Register script manager

<ejs-scripts></ejs-scripts>

Quick start

Step 1: Define the Form Schema

Define a schema describing your fields, validations, conditions, and dependent dropdowns.

var schema = new
{
    version = "0.1.0",
    properties = new
    {
        customerName = new
        {
            id = "textbox_1780380000001_202",
            name = "customerName",
            type = "string",
            label = "Customer Name",
            textboxType = "text",
            required = true,
            widget = "textbox",
            labelPosition = "top",
            size = "Bigger",
            placeholder = "Enter your full name"
        },
        phoneNumber = new
        {
            id = "textbox_1780380000003_404",
            name = "phone",
            type = "string",
            label = "Phone Number",
            textboxType = "number",
            required = true,
            widget = "textbox",
            labelPosition = "top",
            size = "Bigger",
            placeholder = "Enter your phone number"
        }
    }
};

Step 2: Render the Form

<div class="control-section">
    <div class="sample-container">
        <ejs-form-renderer id="formrenderer"
                           schema="@schema"
                           layout="@Syncfusion.EJ2.FormRenderer.FormLayout.TwoColumn">
        </ejs-form-renderer>
    </div>
</div>

Step 3: Run the application

Press Ctrl+F5 to run the application in your browser.

Documentation

• Getting Started
• API reference

Support

• Submit a support ticket
• Community forums
• Feature requests

License

This is a commercial product and requires a paid license for possession or use. Review the Syncfusion EULA

• Purchase a license
• Start a free 30-day trial

About Syncfusion

Syncfusion provides 1800+ components and frameworks for web, mobile, and desktop development across multiple platforms:

Web: Blazor | ASP.NET Core | ASP.NET MVC | JavaScript | Angular | React | Vue

Mobile: Flutter | MAUI | UWP

Desktop: WinForms | WPF | WinUI

Learn more at www.syncfusion.com

sales@syncfusion.com | Toll Free: 1-888-9-DOTNET