Dis-allow MVC actions to be fired only by GET or POST method

We can use the MVC action with the HttpGet or HttpPost attribute to dis-allow the type of HTTP calls.

For example:-
We can see in the below example,the ViewEmployee action can only be invoked by HttpGet.If we try to make HTTP POST on ViewEmployee action,then we will get an error.

[HttpGet]
public ViewResult ViewEmployee(int emp_id)
{
    Employee_Master emp = Employees[emp_id];
    return View("ViewEmployee",emp );
}