How execute a action from HTML form

See more:

ASP

.NET

ASP.NET5

Currently i trying to build a simple contact form.

My Contact.cshtml:

<form asp-action="Contact" asp-controller="Root" method="post">
        <div>
            <label asp-for="Name">Please enter your name:</label>
            <input type="text" asp-for="Name" />
        </div>
        <div>
            <label asp-for="Email">Please enter your email:</label>
            <input type="text" asp-for="Email" />
        </div>
        <div>
            <label asp-for="Subject">Please enter a subject:</label>
            <textarea asp-for="Subject"></textarea>
        </div>
        <div>
            <label asp-for="Message">Please enter your message:</label>
            <textarea asp-for="Message"></textarea>
        </div>
        <input type="submit" value="Send Message!" />        
    </form>

My RootController:

[HttpGet("contact")]
public IActionResult Contact()
{
     return View();
}

[HttpPost("contact")]
//[ValidateAntiForgeryToken]
public async Task<IActionResult> Contact([FromBody] ContactFormModel model)
{
  try
     {
      if (ModelState.IsValid)
      {
       var spamState = VerifyNoSpam(model);
       if (!spamState.Success)
       {
           return BadRequest(new { Reason = spamState.Reason });
       }       
       if (await _mailService.SendMailAsync("ContactTemplate.txt", model.Name, model.Email, model.Subject, model.Message))
       {
         return Ok(new { Success = true, Message = "Message Sent" });
       }

     }
   }
   catch (Exception ex)
   {
     _logger.LogError("Failed to send email from contact page", ex);
     return BadRequest(new { Reason = "Error Occurred" });
   }
     return BadRequest(new { Reason = "Failed to send email..." });
}

So i'm thinking, if i'm clicking the button, it should execute the "Contact" Action inside the Root-Controller.
I added a breakpoint on the Contact Action to see, if it works.

Sadly if i'm on my localhost/contact site, i'm getting just a blank page. Also it looks like the Contact Action aren't executed.

Maybe i have missed anything?

What I have tried:

The code on top. Also i read Part 6, controller methods and views in ASP.NET Core | Microsoft Docs[^]. The example there looks like mine.