public IActionResult Index(Note note)
{
if (!ModelState.IsValid)
{
return(View(note));
}
else
{
noteContext.Insert(note);
noteContext.Commit();
return(RedirectToAction("NotedAdded"));
}
}
public ActionResult Create(ProductCategory productCategory)
{
if (!ModelState.IsValid)
{
return(View(productCategory));
}
else
{
if (context == null)
{
return(View(productCategory));
}
context.Insert(productCategory);
context.Commit();
return(RedirectToAction("Index"));
};
}
public ActionResult Create(Product product, HttpPostedFileBase file)
{
if (!ModelState.IsValid)
{
return(View(product));
}
else
{
if (file != null)
{
product.Image = product.Id + Path.GetExtension(file.FileName);
file.SaveAs(Server.MapPath("/Content/ProductImages/") + product.Image);
}
context.Insert(product);
context.Commit();
return(RedirectToAction("Index"));
}
}
private static void Main(string[] args)
{
// Using Repository Pattern
using (IRepository <Employee> empRepository = new SQLRepository <Employee>())
{
empRepository.Add(new Employee {
Id = 1, Name = "John"
});
empRepository.Commit();
// Variance => made IReadOnlyRepository() => Covariance
DumpPeople(empRepository);
Employee employee = empRepository.FindById(1);
// Variance => made IWriteOnlyRepository() => Contravariance - accepts child class in IRepository<Employee>
AddManagers(empRepository);
// Manager is child class of Employee - Contravariance - accepts child class in IRepository<Employee>
empRepository.Add(new Manager {
Id = 10, Name = "person"
});
}
// Example 2
// T and TKey implementation of RepositoryWithKey
// Can NOT use ints since T must be of IEntity type
// IRepositoryWithKey<int, Person> repoWithKey = new RepositoryWithKey<int, Person>();
IRepositoryWithKey <EntityImplementation, Employee> repoWithKeyEmployee =
new RepositoryWithKey <EntityImplementation, Employee>();
repoWithKeyEmployee.AddItem(new EntityImplementation(1), new Employee {
Name = "John"
});
repoWithKeyEmployee.AddItem(new EntityImplementation(2), new Employee {
Name = "Steve"
});
repoWithKeyEmployee.AddItem(new EntityImplementation(3), new Employee {
Name = "Bob"
});
Console.WriteLine(repoWithKeyEmployee.GetItem(new EntityImplementation(2)).Name);
// Manager should also work
IRepositoryWithKey <EntityImplementation, Manager> repoWithKeyManager =
new RepositoryWithKey <EntityImplementation, Manager>();
repoWithKeyManager.AddItem(new EntityImplementation(1), new Manager {
Name = "Lisa"
});
Console.WriteLine(repoWithKeyEmployee.GetItem(new EntityImplementation(1)).Name);
}