// 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<TodoList.Category> GridViewCategories_GetData()
{
TodoDbEntities context = new TodoDbEntities();
var categories = context.Categories;
return categories;
}
// 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<TodoList.TodoItem> GridViewTodos_GetData()
{
TodoDbEntities context = new TodoDbEntities();
var todos = context.TodoItems.OrderBy(t => t.Title);
return todos;
}
// The id parameter name should match the DataKeyNames value set on the control
public void GridViewCategories_DeleteItem(int categoryId)
{
TodoDbEntities context = new TodoDbEntities();
Category category = context.Categories.Find(categoryId);
context.Categories.Remove(category);
context.SaveChanges();
}
public void InsertCategory(Category category)
{
TodoDbEntities context = new TodoDbEntities();
context.Categories.Add(category);
context.SaveChanges();
this.GridViewCategories.DataBind();
this.GridViewTodos.DataBind();
}
// The id parameter name should match the DataKeyNames value set on the control
public void GridViewCategories_UpdateItem(int categoryId)
{
// Load the item here, e.g. item = MyDataLayer.Find(id);
TodoDbEntities context = new TodoDbEntities();
Category category = context.Categories.Find(categoryId);
if (category == null)
{
// The item wasn't found
ModelState.AddModelError("", String.Format("Category with id {0} was not found", categoryId));
return;
}
TryUpdateModel(category);
if (ModelState.IsValid)
{
context.Entry(category).State = EntityState.Modified;
context.SaveChanges();
}
this.GridViewTodos.DataBind();
}
public void InsertTodoItem(TodoItem todo)
{
TodoDbEntities context = new TodoDbEntities();
context.TodoItems.Add(todo);
context.SaveChanges();
this.GridViewTodos.DataBind();
this.GridViewCategories.DataBind();
}
// The id parameter name should match the DataKeyNames value set on the control
public void GridViewTodos_DeleteItem(int todoId)
{
TodoDbEntities context = new TodoDbEntities();
TodoItem todo = context.TodoItems.Find(todoId);
context.TodoItems.Remove(todo);
context.SaveChanges();
}