Ich folgtediese Tutorial, und ich habe versucht, ein paar neue Spalten in der Benutzerprofiltabelle hinzuzufügen. Und ich habe versucht, eine neue Tabelle zu erstellen.

 public class UsersContext : DbContext
{
    public UsersContext()
        : base("DefaultConnection")
    {
    }

    public DbSet<UserProfile> UserProfiles { get; set; }
    public DbSet<TestTabel> TestTabel { get; set; }
}

[Table("UserProfile")]
public class UserProfile
{
    [Key]
    [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
    public int UserId { get; set; }
    public string UserName { get; set; }
    public string Mobile { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
}

[Table("TestTabel")]
public class TestTabel
{
    [Key]
    [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
    public int TestId { get; set; }
    public string TestName { get; set; }
    public string TestMobile { get; set; }
}

Dann habe ich versucht, die Datenbank über die Konsole mit dem Befehl update-database zu aktualisieren, und habe die folgende Fehlermeldung erhalten:

In der Datenbank befindet sich bereits ein Objekt mit dem Namen 'UserProfile'.

Die neuen Spalten wurden nicht hinzugefügt und auch die Tabelle nicht.

Was vermisse ich?

[EDIT] Ich habe die Befehle add-migration und update-database ausgeführt, und dies ist das Ergebnis (musste den Befehl update-database zweimal ausführen, das zweite Mal mit ausführlichen Anweisungen).

PM> Add-Migration
cmdlet Add-Migration at command pipeline position 1
Supply values for the following parameters:
Name: test
Scaffolding migration 'test'.
The Designer Code for this migration file includes a snapshot of your current Code First model. This snapshot is used to calculate the changes to your model when you scaffold the next migration. If you make additional changes to your model that you want to include in this migration, then you can re-scaffold it by running 'Add-Migration 201304011714212_test' again.
PM> Update-Database
The project 'MVC4SimpleMembershipCodeFirstSeedingEF5' failed to build.
PM> Update-Database
Specify the '-Verbose' flag to view the SQL statements being applied to the target database.
Applying code-based migrations: [201304011714212_test].
Applying code-based migration: 201304011714212_test.
Running Seed method.
PM> Update-Database -verbose
Using StartUp project 'MVC4SimpleMembershipCodeFirstSeedingEF5'.
Using NuGet project 'MVC4SimpleMembershipCodeFirstSeedingEF5'.
Specify the '-Verbose' flag to view the SQL statements being applied to the target database.
Target database is: 'aspnet-MVC4SimpleMembershipCodeFirstSeedingEF5' (DataSource: ., Provider: System.Data.SqlClient, Origin: Configuration).
No pending code-based migrations.
Running Seed method.
PM>

[/BEARBEITEN]

Konfiguration.cs:

    namespace MVC4SimpleMembershipCodeFirstSeedingEF5.Migrations
{
    internal sealed class Configuration : DbMigrationsConfiguration<UsersContext>
    {
        public Configuration()
        {
            AutomaticMigrationsEnabled = true;
        }

    protected override void Seed(UsersContext context)
    {
        WebSecurity.InitializeDatabaseConnection(
            "DefaultConnection",
            "UserProfile",
            "UserId",
            "UserName", autoCreateTables: true);

        if (!Roles.RoleExists("Administrator"))
            Roles.CreateRole("Administrator");

        if (!WebSecurity.UserExists("test"))
            WebSecurity.CreateUserAndAccount(
                "test",
                "password",
                new { Mobile = "+19725000374", FirstName = "test", LastName = "test" });

        if (!Roles.GetRolesForUser("test").Contains("Administrator"))
            Roles.AddUsersToRoles(new[] { "test" }, new[] { "Administrator" });
    }
  }
}

Im Filterordner 1 cs-Datei:

namespace MVC4SimpleMembershipCodeFirstSeedingEF5.Filters
{
    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, 

    Inherited = true)]
    public sealed class InitializeSimpleMembershipAttribute : ActionFilterAttribute
    {
        private static SimpleMembershipInitializer _initializer;
        private static object _initializerLock = new object();
        private static bool _isInitialized;

        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            // Ensure ASP.NET Simple Membership is initialized only once per app start
            LazyInitializer.EnsureInitialized(ref _initializer, ref _isInitialized, ref _initializerLock);
        }
    private class SimpleMembershipInitializer
    {
        public SimpleMembershipInitializer()
        {
            Database.SetInitializer<UsersContext>(null);

            try
            {
                using (var context = new UsersContext())
                {
                    if (!context.Database.Exists())
                    {
                        // Create the SimpleMembership database without Entity Framework migration schema
                        ((IObjectContextAdapter)context).ObjectContext.CreateDatabase();
                    }
                }

                WebSecurity.InitializeDatabaseConnection("DefaultConnection", "UserProfile", "UserId", "UserName", autoCreateTables: true);
            }
            catch (Exception ex)
            {
                throw new InvalidOperationException("The ASP.NET Simple Membership database could not be initialized. For more information, please see http://go.microsoft.com/fwlink/?LinkId=256588", ex);
            }
        }
    }
  }
}

Verbindungszeichenfolge:

<configSections>
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>

Letzte Migration:

namespace MVC4SimpleMembershipCodeFirstSeedingEF5.Migrations
{
    using System;
    using System.Data.Entity.Migrations;

public partial class test : DbMigration
{
    public override void Up()
    {
        CreateTable(
            "dbo.TestTabel",
            c => new
                {
                    TestId = c.Int(nullable: false, identity: true),
                    TestName = c.String(),
                    TestMobile = c.String(),
                })
            .PrimaryKey(t => t.TestId);

    }

    public override void Down()
    {
        DropTable("dbo.TestTabel");
    }
  }
}