WebApi rest Webservice with database connection - mysql

Question

I created an example rest webservice using WebApi.
Here is the controller class named Employee Controller.
namespace HelloWebApi.Controllers
{
public class EmployeesController : ApiController
{
private static IList<Employee> list = new List<Employee>()
{
new Employee()
{
Id = 12345, FirstName = "John", LastName = "Human",Department = 2
},
new Employee()
{
Id = 12346, FirstName = "Jane", LastName = "Public",Department = 3
},
new Employee()
{
Id = 12347, FirstName = "Joseph", LastName = "Law",Department = 2
}
};
// GET api/employees
public IEnumerable<Employee> Get()
{
return list;
}
// GET api/employees/12345
public Employee Get(int id)
{
return list.First(e => e.Id == id);
}
// POST api/employees
public void Post(Employee employee)
{
int maxId = list.Max(e => e.Id);
employee.Id = maxId + 1;
list.Add(employee);
}
// PUT api/employees/12345
public void Put(int id, Employee employee)
{
int index = list.ToList().FindIndex(e => e.Id == id);
list[index] = employee;
}
// DELETE api/employees/12345
public void Delete(int id)
{
Employee employee = Get(id);
list.Remove(employee);
}
public HttpResponseMessage Patch(int id, Delta<Employee> deltaEmployee)
{
var employee = list.FirstOrDefault(e => e.Id == id);
if (employee == null)
{
throw new HttpResponseException(HttpStatusCode.NotFound);
}
deltaEmployee.Patch(employee);
return Request.CreateResponse(HttpStatusCode.NoContent);
}
}
}
Here I used all HTTP verbs method for insert, update, delete. I used a list that stores the Employee objects. insertion, deletion and updation are based on this list. But this program has no database connection. I want to know how to use Database access in this program. I would like to use tables from a database. How could i do it? Any useful link please.