public void Update <T2>(T2 entity) where T2 : class, new()
{
var stub = new T2(); // create stub, now you see why we need new() constraint
object entityKey = null;
// ..snip code to get entity key via attribute on all domain entities
// once we have key, set on stub.
// check if entity is already attached..
ObjectStateEntry entry;
bool attach;
if (CurrentContext.ObjectStateManager.TryGetObjectStateEntry(CurrentContext.CreateEntityKey(CurrentContext.GetEntityName <T>(), stub), out entry))
{
// Re-attach if necessary.
attach = entry.State == EntityState.Detached;
}
else
{
// Attach for first time.
attach = true;
}
if (attach)
{
CurrentEntitySet.Attach(stub as T);
}
// Update Model. (override stub values attached to graph)
CurrentContext.ApplyCurrentValues(CurrentContext.GetEntityName <T>(), entity);
}
public ICollection <Apple> FindApples(Func <Apple, bool> predicate)
{
return(CurrentEntitySet.Where(predicate).ToList());
}
public void UpdateModel(Post post)
{
var originalPost = CurrentEntitySet.SingleOrDefault(p => p.PostId == post.PostId);
Context.ApplyCurrentValues(GetEntityName <Post>(), post);
}
