// The return type can be changed to IEnumerable, however to support
// paging and sorting, the following parameters must be added:
// int maximumRows
// int startRowIndex
// out int totalRowCount
// string sortByExpression
public IQueryable<Category> CategoriesList_GetData()
{
var context = new TODOListEntities();
var categories =
context.Categories;
return categories;
}
// The id parameter name should match the DataKeyNames value set on the control
public void CategoriesList_DeleteItem(int id)
{
var context = new TODOListEntities();
using (context)
{
Category category = context.Categories.FirstOrDefault(c => c.Id == id);
context.Categories.Remove(category);
context.SaveChanges();
}
}
public void CategoriesList_InsertItem()
{
var item = new Todo().Category;
TryUpdateModel(item);
if (ModelState.IsValid)
{
var context = new TODOListEntities();
using (context)
{
context.Categories.Add(item);
context.SaveChanges();
}
}
}
// The id parameter name should match the DataKeyNames value set on the control
public void CategoriesList_UpdateItem(int id)
{
var context = new TODOListEntities();
using (context)
{
Category category = context.Categories.Find(id);
if (category == null)
{
// The item wasn't found
ModelState.AddModelError("",
String.Format("Product with id {0} was not found", id));
return;
}
TryUpdateModel(category);
if (ModelState.IsValid)
{
context.Entry(category).State = EntityState.Modified;
context.SaveChanges();
}
}
}
// The id parameter name should match the DataKeyNames value set on the control
public void TodosListView_DeleteItem(int id)
{
var context = new TODOListEntities();
using (context)
{
var todo = context.Todos.FirstOrDefault(t => t.Id == id);
context.Todos.Remove(todo);
context.SaveChanges();
}
}
// The id parameter name should match the DataKeyNames value set on the control
public void TodosListView_UpdateItem(int id)
{
var context = new TODOListEntities();
using (context)
{
Todo todo = context.Todos.Find(id);
if (todo == null)
{
// The item wasn't found
ModelState.AddModelError("",
String.Format("Product with id {0} was not found", id));
return;
}
TryUpdateModel(todo);
if (ModelState.IsValid)
{
todo.DateOfLastChange = DateTime.Now;
context.Entry(todo).State = EntityState.Modified;
context.SaveChanges();
}
}
}
public void TodosListView_InsertItem()
{
var item = new Todo();
TryUpdateModel(item);
if (ModelState.IsValid)
{
item.DateOfLastChange = DateTime.Now;
var context = new TODOListEntities();
using (context)
{
context.Todos.Add(item);
context.SaveChanges();
}
}
}
public IQueryable<Todo> TodosListView_GetData()
{
var context = new TODOListEntities();
if (this.CategoriesList.SelectedDataKey != null)
{
int id = int.Parse(this.CategoriesList.SelectedDataKey.Value.ToString());
return context.Categories.FirstOrDefault(x => x.Id == id).Todos.AsQueryable();
}
else
{
return null;
}
}
