static void RunExample()
{
int itemId = 0;
using (var context = new EFRecipesEntities())
{
var item = new Item {
Name = "Xcel Camping Tent", UnitPrice = 99.95M
};
context.Items.AddObject(item);
context.SaveChanges();
// keep the item id for the next step
itemId = item.ItemId;
Console.WriteLine("Item: {0}, UnitPrice: {1}", item.Name, item.UnitPrice.ToString("C"));
}
using (var context = new EFRecipesEntities())
{
// pretend this is the updated
// item we received with the new price
var item = new Item {
ItemId = itemId, Name = "Xcel Camping Tent", UnitPrice = 129.95M
};
// use our method to get the entity set name
var itemES = context.GetEntitySet(item);
// create the entity key
var key = context.CreateEntityKey(itemES.Name, item);
// retrieve and update the item
context.GetObjectByKey(key);
context.ApplyCurrentValues(itemES.Name, item);
context.SaveChanges();
}
using (var context = new EFRecipesEntities())
{
var item = context.Items.Single();
Console.WriteLine("Item: {0}, UnitPrice: {1}", item.Name, item.UnitPrice.ToString("C"));
}
Console.WriteLine("Press <enter> to continue...");
Console.ReadLine();
}