httpStatusCode:not found when trying to Delete

Question

Hi

 

Trying to delete record but it is giving above error. Get is working o.k

public class EmployeesController: ApiController {
  private PMDbEntities db = new PMDbEntities();
// GET: api/Employees
  public IHttpActionResult GetEmployees() {
    try {
      var results = (from d in db.Employees join f in db.Departments on d.DepartmentId equals f.ID select new {
        Id = d.ID, Name = d.Name, Department = f.Description
      }).ToList();
      if (results == null) {
        return NotFound();
      }
      return Ok(results);
    } catch (Exception) {
      return BadRequest();
    }
  } // DELETE: api/Employees/5
  [ResponseType(typeof (Employee))] public IHttpActionResult DeleteEmployee(int id) {
    try {
      Employee employee = db.Employees.Find(id);
      if (employee == null) {
        return Content(HttpStatusCode.NotFound, "Employee not found");
      } else {
        db.Employees.Remove(employee);
        db.SaveChanges();
        return Ok(employee);
      }
    } catch (Exception ex) {
      return BadRequest("Error Encountered : " + ex);
    }
  }
}

protected void btnDelete_Click(object sender, EventArgs e) {
  RestClient restClient = new RestClient("http://localhost:40991/api/Employees/");
  restClient.Timeout = -1;
  RestRequest request = new RestRequest(Method.DELETE);
  request.AddHeader("Id", lblId.Text);
  request.AddHeader("Content-Type", "application/json");
  IRestResponse result = restClient.Execute(request);
}

Secondly, I want to display return value from Api

 

Thanks