Database in use error with Entity Framework 4 Code First

Question

I have an MVC3 and EF 4 Code First application, which is configured to change the DB when the model changes, by setting the DB Initializer to a DropCreateDatabaseIfMod

Answer 1

I realize this is dated but I couldn't get the accepted solution working so I rolled a quick solution...

using System;
using System.Data.Entity;

namespace YourCompany.EntityFramework
{
    public class DropDatabaseInitializer : IDatabaseInitializer where T : DbContext, new()
    {
        public DropDatabaseInitializer(Action seed = null)
        {
            Seed = seed ?? delegate {};
        }

        public Action Seed { get; set; }

        public void InitializeDatabase(T context)
        {
            if (context.Database.Exists())
            {
                context.Database.ExecuteSqlCommand("ALTER DATABASE [" + context.Database.Connection.Database + "] SET SINGLE_USER WITH ROLLBACK IMMEDIATE");
                context.Database.ExecuteSqlCommand("USE master DROP DATABASE [" + context.Database.Connection.Database + "]");
            }

            context.Database.Create();

            Seed(context);
        }
    }
}

This works for me and supports seeding easily.