entity-framework-5

I have a successful query that links two tables with a where and orderby clause, but I wanted to add to just select specific columns instead of getting everything back. PART 1 When I attempt this I get syntax errors on the orderby line, if I remove the orderby line the syntax errors move to the where line. Error 3 Cannot implicitly convert type 'System.Linq.IOrderedQueryable' to 'System.Linq.IQueryable'. An explicit conversion exists (are you missing a cast?) IQueryable<VendorProfile> query = _db.VendorProfiles .Include("VendorCategories") .Include("VendorsSelected") .Select(s => new { s

The InitializeDatabaseConnection Method documentation says we can use the MVC 4 "Internet" template's generated membership functionality with SQLCE (SQL Server Compact 4.0 Local Database). I've used this template many times before and have never had a problem when I didn't fiddle with anything and simply used the localDb (the default) that is generated by the Entity Framework the first time we register a user. My requirement is to get the membership tables that are by default generated into 2012 localDb database instead to generate into a SQLCE database. However, I'm getting the following:

I'm attempting to use Bounded (Db) Contexts in Entity Framework 5.0, and I'm having problems excluding a property from one of the classes included in a specific context. Here is the information (I'll shorten for brevity) BaseContext.cs public class BaseContext<TContext> : DbContext where TContext : DbContext { static BaseContext() { Database.SetInitializer<TContext>(null); } protected BaseContext() : base("name=Development") { } } IContext.cs public interface IContext : IDisposable { int SaveChanges(); void SetModified(object entity); void SetAdded(object entity); } ISuiteContext.cs public

I like to to keep my code first - or T4 generated - POCOs in a project separated from the DbContext. This helps me ensure my entity classes aren't coupled to any one data access service. When I create a new DB first EDMX model, the wizard generates a T4 template to generate all the POCOs in the same project as the DbContext. How can I modify this template to add classes to a separate project? On closer inspection, it would probably be much easier to move the DbContext to a new project, but the T4 for this has no call to fileManager.StartNewFile so i don't know where to begin telling it to

I have a method called UpdateOrders that is supposed to allow users to only edit orders that they own, unless the user is an administrator, in which case they can edit all orders. I'm using Entity Framework 5 in .NET 4.5. The following code produces the error "Unable to create a constant value of type 'User'" at the line var target = _context.Orders.FirstOrDefault... . public Order UpdateOrders(Order order) { var userName = HttpContext.Current.User.Identity.Name.ToLower(); var target = _context.Orders.FirstOrDefault(o => o.OrderID == order.OrderID && (o.User.UserName.ToLower() == userName ||

I have a table called SystemAccount , which (up until recently) had a MasterAccountID on it that would point to its parent account (obviously an int? ). My client has now told me that there may be sometimes where an account can have 2 parent accounts (none ever have more than that). I've been trying to make the adjustment in my SystemAccount class, but it's not generating the relationship that I want. Here's part of the class code: [ForeignKey("MasterAccount")] public int? MasterAccountID { get; set; } [ForeignKey("SecondMasterAccount")] public int? SecondMasterAccountID { get; set; } public