entity-framework-5

I'm building an application using ASP.NET MVC 4 with Entity Framework 5.0. I've recently learned about EF Code-First Migrations tool you can implement on your application for your database. I ran "Enable-Migration" in the PM Console, and it enabled successfully and created the "InitialCreate.cs" class as expected with the appropriate up() and down() methods filled in with the table creations. Then I went ahead and added another class (Category.cs) with 2 simple properties (id, name) and wanted to add this migration to the database. I ran "Add-Migration AddCategoryClass" in my PM to get this

I am using Entity Framework 5 RC and i have some code that require a specific table on the database. The entity is already created using Code-First. a) Is there a way to tell EF to create the table if its not already created in the database ? If yes.. how ? b) Also.. if the table already exist, can it handle entity changes such adding properties to the entity.. will it get reflected on the database ? (We still use the code-first approach here) Thanks! Ladislav Mrnka Use code first migrations (either automatic or code based ). If you are adding table to existing database create initial

I work on a framework with EF. I want to get all ignored properties of an entity to build some special queries. How can I do it? public class Customer { public int Id { get; set; } public DateTime BirthDate { get; set; } public int Age { get; set; } } public class CustomerContext : DbContext { protected override void OnModelCreating(DbModelBuilder modelBuilder) { modelBuilder.Entity<Customer>().Ignore(customer => customer.Age); base.OnModelCreating(modelBuilder); } public DbSet<Customer> Customers { get; set; } } public static class DbContextExtensions { public static List<string>

is there any way to evaluate if a string contains some of the elements of a list or all the elements of the list? using linq to entities? i have been trying to use predicateBuilder and others but im not %100 into thoses. EDIT something like: string[] words = searchString.Split(' '); var resultado = db.users .Where(u => u.fullName.contains(words) ) .Select(s => new { user_id = s.id_user, nombre = s.fullName}) .ToList(); You need to reverse your use of Contains to check the words collection for the fullName : string[] words = searchString.Split(' '); var resultado = db.users .Where(u => words

We want to put the current datetime into a database column. We have a web farm where the time on the web servers can vary, we therefore need to use the datetime on the database server. We have a database with a Not Null datetime column. This column has a default datetime of current time. This works fine when we insert data using a SQL statement that does not include the datetime column. From Entity Framework: If we define the datetime as not null , the datetime is set to low date, and low date is inserted into the database. If we define the datetime as null , we get an exception on the insert

I'd like to start with that I have a workaround for this issue - but I spent a few hours today figuring out the cause of the exception, so I'd thought I'd share Given two entities in the domain: public class User { public int Id { get; set; } public string Name { get; set; } } public class Ticket { public int Id { get; set; } public string Name { get; set; } public virtual User Owner { get; set; } public int? LockedByUserId { get; set; } public virtual User LockedByUser { get; set; } [Timestamp] public byte[] ETag { get; set; } } The following configuration: public class TicketConfiguration :

I'm using EF5 code first to generate my database schema, but my new navigation property is being named in an undesirable way in the table. here is the model I'm working with. public class User { [Key] public long UserId { get; set; } ... **public virtual ICollection<ImagePermission> KeepThisNavigationName { get; set; }** } However, After I've updated my database and examine the table columns, the column is named: dbo.ImagePermission.User_UserId And I would like it to be named dbo.ImagePermission.KeepThisNavigationName_UserId I believe there is a way to do this using the Fluent API, but after