How can we detect that a MVC controller is called by POST or GET?

Answer 1

When Page get loaded first time (or) Reload it will Hit GET Method. If user doing any action from Page (eg: click the submit button) it will hit the POST Method

Example:

[HttpGet]
Public ActionResult TestMethod()
{
  //This Method will Hit when Page Reload
  return view();
}

[HttpPost]
Public ActionResult TestMethod(ModelClass Model)
{
  //This Method will Hit when user click any submit button in TestMethod View
  //User did any action from Page it will Hit POST Method
  return view();
}