poco

I have a 1..* relationship between Review and Recommendations . The relevant portion of my model (which is also the POCO mapped by EF4): public class Review { public ICollection<Recommendations> Recommendations { get; set; } } On an Edit View , i represent the Recommendations as a set of checkboxes. When i try and add a new Recommendation as part of editing the Review (e.g check another box), nothing is happening - and i know why... I use the "stub technique" to update my entities - e.g i create a entity with the same key, attach it to the graph, then do ApplyCurrentValues . But this only

How can I map table splitting with EF Code First? Table splitting for EDMX is described for example here . It allows mapping two entities with 1:1 relation into same table. I know I can do the similar mapping with entity and complex type but the big difference is that complex type can't be lazy loaded (or not loaded at all) which is the main reason for table splitting. Here is how I just got EF 4.1 (RC) to do table splitting in Code First. Define your two entities. Make sure to include the key in both entities. Also, include navigation properties in each entity pointing to the other entity. In

I will like to know that is there a way to exclude some fields from the database? For eg: public class Employee { public int Id { get; set; } public string Name { get; set; } public string FatherName { get; set; } public bool IsMale { get; set; } public bool IsMarried { get; set; } public string AddressAs { get; set; } } How can I exclude the AddressAs field from the database? In the current version the only way to exclude a property is to explicitly map all the other columns: builder.Entity<Employee>().MapSingleType(e => new { e.Id, e.Name, e.FatherName, e.IsMale, e.IsMarried }); Because

Sometimes I want to emulate stored data of my classes without setting up a round trip to the database. For example, let's say I have the following classes: public class ShoppingCart { public List<CartItem> Items {get; set;} public int UserID { get; set; } } public class CartItem { public int SkuID { get; set; } public int Quantity { get; set; } public double ExtendedCost { get; set; } } Let's say I build a ShoppingCart object in memory and want to "save" it as an XML document. Is this possible via some kind of XDocument.CreateFromPOCO(shoppingCart) method? How about in the other direction: is