entity-framework-4.1

I have a standard LINQ query: var list = from x in SomeDataContext.ViewName where //Rest of where clause select x; I would like to know if it is possible to build a dynamic LINQ query so that i can change the SomeDataContext.ViewName at runtime. I have about 5 different views, all with the basic columns needed to perform the where clause, but with some different column names for each of other views. So is it possible to build up the query so that i can use the different context at runtime, when needed? Example: public void SomeMethod() { var listA = GetList("DataContext.ViewA"); var listB =

What is the best way to separate the mapping of tables to entities using the Fluent API so that it is all in a separate class and not inline in the OnModelCreating method? What I am doing currently: public class FooContext : DbContext { // ... protected override OnModelCreating(DbModelBuilder modelBuilder) { modelBuilder.Entity<Foo>().Property( ... ); // ... } } What i want: public class FooContext : DbContext { // ... protected override OnModelCreating(DbModelBuilder modelBuilder) { modelBuilder.LoadConfiguration(SomeConfigurationBootstrapperClass); } } How do you do this? I am using C#. You

I am using Entity Framework 4.1 code first and ASP.NET MVC 3 and I am struggling to get my self referencing setup properly. I have a Category class. It must be self referencing to itself. A category can be a parent category when the ParentCategoryId in the table is null. If a category has a ParentCategoryId with a value then it means that it belongs to a parent category. I followed this article on Code Project. Here is my Category class: public class Category { public int Id { get; set; } public string Name { get; set; } public string Description { get; set; } public string MetaKeywords { get;

I have a DbContext with set up different DbSet<T> s with all types that derive from the same base class: public class Foo : Entity { } public class Bar : Entity { } MyDbContext : DbContext { public DbSet<Foo> Foos { get; set; } public DbSet<Bar> Bars { get; set; } } Is it possible to get all entities which have the Entity base class in one query, like: DbContext.Set<Entity>(); // doesn't work I tried to introduce an explicit DbSet<Entity> to the DbContext, but that results in one big table for all entities in the database. Additional question: If this works somehow, what about querying for

I have just upgraded to the latest EF 4.1 code-first using NuGet and now I am receiving an error regarding my mapping. I have this class public class UserApplication { [Key, Column(Order = 0)] [DatabaseGenerated(DatabaseGeneratedOption.None)] public int UserId { get; set; } [Key, Column(Order = 1)] [DatabaseGenerated(DatabaseGeneratedOption.None)] public int ApplicationId { get; set; } [ForeignKey("ApplicationId")] public virtual Application Application { get; set; } public DateTime SubscribedDate { get; set; } } And I am getting this error: System.Data.Edm.EdmEntityType: : EntityType