I have API like this , what i want his 
When i call with out any parameters 
`http//localhostcustomer/employes/` it should return 
`StatusCode(StatusCodes.Status404NotFound)`

And if pass with invalid parameters `http//localhostcustomer/employes/customerid=abcsd&employedid=yyyy` it should return 
`StatusCode(StatusCodes.Status400BadRequest);`

how to do model validation for this 

```
[Route("customer/employes")]
Public class testcontroller : controller

public List<Emplyees> get( [Required]int customerid, [Required]int employedid)
{
  if (ModelState.IsValid)
     return OK
  else
     StatusCode(StatusCodes.Status400BadRequest);
}

```