title: Web API parameter values are null when check with Postman
body: <p>I have created simple .net core web api. But when I chek it by postman my model parameter values are null.</p>
  
  <p>namespace Identity.API.Controllers
  {</p>
  
  <pre><code>[Produces("application/json")]
  [Route("api/Token")]
  //[AllowAnonymous]    
  public class AccountController : Controller
  {
      [HttpPost] 
      public IActionResult Token(LoginViewModel model)
      {
           //some code here
  
          return Ok(token.Value);
      }              
  }
  </code></pre>
  
  <p>}</p>
  
  <p><a href="https://i.stack.imgur.com/lYUrr.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lYUrr.png" alt="enter image description here"></a></p>
  
  <p><strong>but parameter values are null</strong></p>
  
  <p><a href="https://i.stack.imgur.com/lP7Tc.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lP7Tc.png" alt="enter image description here"></a></p>
  
  <p>please help me.</p>