Tag Helper Forms in ASP.NET Core simplify HTML form creation by connecting forms directly to models and controller actions. They automatically handle model binding, validation, and routing, reducing boilerplate code.
Key Features:
- Simplifies form creation in Razor views
- Supports model binding and validation
- Generates correct HTML element attributes
- Integrates seamlessly with MVC and Razor Pages
- Enhances readability and maintainability
Example:
Creating a login form with Tag Helpers:
<form asp-action="Login" method="post">
<div>
<label asp-for="Username"></label>
<input asp-for="Username" />
<span asp-validation-for="Username"></span>
</div>
<div>
<label asp-for="Password"></label>
<input asp-for="Password" type="password" />
<span asp-validation-for="Password"></span>
</div>
<button type="submit">Login</button>
</form>
Controller action to handle the form:
[HttpPost]
public IActionResult Login(UserModel user)
{
if(ModelState.IsValid)
return Content($"Welcome, {user.Username}");
return View(user);
}
Tag Helper Forms in ASP.NET Core make form handling easier, safer, and more maintainable by integrating models, validation, and HTML generation.
Citations: