How can I change the table names when using ASP.NET Identity?

Question

I am using the release version (RTM, not RC) of Visual Studio 2013 (downloaded from MSDN 2013-10-18) and therefore the latest (RTM) version of AspNet.Identity. When I create a new web project, I select "Individual User Accounts" for authentication. This creates the following tables:

1. AspNetRoles
2. AspNetUserClaims
3. AspNetUserLogins
4. AspNetUserRoles
5. AspNetUsers

When I register a new user (using the default template), these tables (listed above) are created and the AspNetUsers table has a record inserted which contains:

1. Id
2. UserName
3. PasswordHash
4. SecurityStamp
5. Discriminator

Additionally, by adding public properties to the class "ApplicationUser" I have successfully added additional fields to the AspNetUsers table, such as "FirstName", "LastName", "PhoneNumber", etc.

Here's my question. Is there a way to change the names of the above tables (when they are first created) or will they always be named with the AspNet prefix as I listed above? If the table names can be named differently, please explain how.

-- UPDATE --

I implemented @Hao Kung's solution. It does create a new table (for example I called it MyUsers), but it also still creates the AspNetUsers table. The goal is to replace the "AspNetUsers" table with the "MyUsers" table. See code below and database image of tables created.

I would actually like to replace each AspNet table with my own name... For fxample, MyRoles, MyUserClaims, MyUserLogins, MyUserRoles, and MyUsers.

How do I accomplish this and end up with only one set of tables?

public class ApplicationUser : IdentityUser
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string Address1 { get; set; }
    public string Address2 { get; set; }
    public string City { get; set; }
    public string State { get; set; }
    public string PostalCode { get; set; }
    public string PhonePrimary { get; set; }
    public string PhoneSecondary { get; set; }
}

public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
    public ApplicationDbContext(): base("DefaultConnection")
    {
    }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);
        modelBuilder.Entity<IdentityUser>().ToTable("MyUsers");
    }
}

-- UPDATE ANSWER --

Thanks to both Hao Kung and Peter Stulinski. This solved my problem...

    protected override void OnModelCreating(System.Data.Entity.DbModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);

        modelBuilder.Entity<IdentityUser>().ToTable("MyUsers").Property(p => p.Id).HasColumnName("UserId");
        modelBuilder.Entity<ApplicationUser>().ToTable("MyUsers").Property(p => p.Id).HasColumnName("UserId");
        modelBuilder.Entity<IdentityUserRole>().ToTable("MyUserRoles");
        modelBuilder.Entity<IdentityUserLogin>().ToTable("MyUserLogins");
        modelBuilder.Entity<IdentityUserClaim>().ToTable("MyUserClaims");
        modelBuilder.Entity<IdentityRole>().ToTable("MyRoles");
    }

Answer 1

You can do this easily by modifying the IdentityModel.cs as per the below:

Override OnModelCreating in your DbContext then add the following, this will change AspNetUser table to "Users" you can also change the field names the default Id column will become User_Id.

modelBuilder.Entity<IdentityUser>()
                    .ToTable("Users", "dbo").Property(p => p.Id).HasColumnName("User_Id");

or simply the below if you want to keep all the standard column names:

modelBuilder.Entity<IdentityUser>()
                        .ToTable("Users", "dbo")

Full example below (this should be in your IdentityModel.cs file) i changed my ApplicationUser class to be called User.

public class User : IdentityUser
    {
        public string PasswordOld { get; set; }
        public DateTime DateCreated { get; set; }

        public bool Activated { get; set; }

        public bool UserRole { get; set; }

    }

public class ApplicationDbContext : IdentityDbContext<User>
    {
        public ApplicationDbContext()
            : base("DefaultConnection")
        {
        }

        protected override void OnModelCreating(System.Data.Entity.DbModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);
            modelBuilder.Entity<IdentityUser>()
                .ToTable("Users", "dbo").Property(p => p.Id).HasColumnName("User_Id");
            modelBuilder.Entity<User>()
                .ToTable("Users", "dbo").Property(p => p.Id).HasColumnName("User_Id");
        }
    }

Please note i have not managed to get this working if the current table exists. Also note whatever columns you do not map the default ones will be created.

Answer 2

Below is my working solution:

public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
    public ApplicationDbContext()
        : base("DefaultConnection", throwIfV1Schema: false)
    {
    }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder); // This needs to go before the other rules!

        modelBuilder.Entity<ApplicationUser>().ToTable("User");
        modelBuilder.Entity<IdentityRole>().ToTable("Role");
        modelBuilder.Entity<IdentityUserRole>().ToTable("UserRole");
        modelBuilder.Entity<IdentityUserClaim>().ToTable("UserClaim");
        modelBuilder.Entity<IdentityUserLogin>().ToTable("UserLogin");
    }

    public static ApplicationDbContext Create()
    {
        return new ApplicationDbContext();
    }
}

See this for more detail

Answer 3

You can try overriding this method in your DbContext class to map it to a table of your choosing:

    protected override void OnModelCreating(DbModelBuilder modelBuilder) {
        modelBuilder.Entity<IdentityUser>()
            .ToTable("AspNetUsers");

Answer 4

But it does not work in .NET CORE (MVC 6) for that we need to change binding to

like

protected override void OnModelCreating(ModelBuilder builder)
{
    base.OnModelCreating(builder);

    builder.Entity<IdentityRole>().ToTable("Role");
    builder.Entity<IdentityUser>(entity => 
    {
        entity.ToTable("User");
        entity.Property(p => p.Id).HasColumnName("UserId");
    });
}

It might help someone :)

Answer 5

Just for documentation purpose, for the one who comes to this post on the years anyears on the future, (like me XD), All answers given up my comment are right, but you can simplyfied with this method given by Alexandru Bucur on his blog

         //But this method is not longer supported on netcore > 2.2, so I need to fix it
         foreach (var entityType in modelBuilder.Model.GetEntityTypes())
         {
            var table = entityType.Relational().TableName;
             if (table.StartsWith("AspNet"))
             {
                 entityType.Relational().TableName = table.Substring(6);
             }
         };

        //This is the functional way on NetCore > 2.2
        foreach (var entityType in modelBuilder.Model.GetEntityTypes())
        {
            var tableName = entityType.GetTableName();
            if (tableName.StartsWith("AspNet"))
            {
                entityType.SetTableName(tableName.Substring(6));
            }
        }

Answer 6

You can also create configuration classes and specify every detail of each of your Identity classes, for example:

using System.Data.Entity.ModelConfiguration;

public class ApplicationUserConfig : EntityTypeConfiguration<ApplicationUser>
{
    public UserConfig()
    {
        ToTable("Users");
        Property(u => u.LocationName).IsRequired();
    }
}

And then include these configurations in the OnModelCreating() method:

protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);

        modelBuilder.Configurations.Add(new ApplicationUserConfig());
        ...
    }

This will give you complete control over every aspect of the Identity classes.

Answer 7

Also can do it dynamically such as the below:

public class ApplicationDbContext : IdentityDbContext
{
    public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options):  base(options)
    {
    }

    protected override void OnModelCreating(ModelBuilder builder)
    {
        base.OnModelCreating(builder);

        var entityTypes = builder.Model.GetEntityTypes(); 
        foreach (var entityType in entityTypes)
            builder.Entity(entityType.ClrType)
                   .ToTable(entityType.GetTableName().Replace("AspNet", ""));
    }

}

Answer 8

We can change asp.net Identity default table names like this:

    public class ApplicationDbContext : IdentityDbContext
    {    
        public ApplicationDbContext(): base("DefaultConnection")
        {
        }

        protected override void OnModelCreating(System.Data.Entity.DbModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);
            modelBuilder.Entity<IdentityUser>().ToTable("user");
            modelBuilder.Entity<ApplicationUser>().ToTable("user");

            modelBuilder.Entity<IdentityRole>().ToTable("role");
            modelBuilder.Entity<IdentityUserRole>().ToTable("userrole");
            modelBuilder.Entity<IdentityUserClaim>().ToTable("userclaim");
            modelBuilder.Entity<IdentityUserLogin>().ToTable("userlogin");
        }
    }

Furthermore we can extend each class and add any property to classes like 'IdentityUser', 'IdentityRole', ...

    public class ApplicationRole : IdentityRole<string, ApplicationUserRole>
{
    public ApplicationRole() 
    {
        this.Id = Guid.NewGuid().ToString();
    }

    public ApplicationRole(string name)
        : this()
    {
        this.Name = name;
    }

    // Add any custom Role properties/code here
}


// Must be expressed in terms of our custom types:
public class ApplicationDbContext 
    : IdentityDbContext<ApplicationUser, ApplicationRole, 
    string, ApplicationUserLogin, ApplicationUserRole, ApplicationUserClaim>
{
    public ApplicationDbContext()
        : base("DefaultConnection")
    {
    }

    static ApplicationDbContext()
    {
        Database.SetInitializer<ApplicationDbContext>(new ApplicationDbInitializer());
    }

    public static ApplicationDbContext Create()
    {
        return new ApplicationDbContext();
    }

    // Add additional items here as needed
}

To save time we can use AspNet Identity 2.0 Extensible Project Template to extend all the classes.

Answer 9

protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);
            modelBuilder.Entity<AppUser>().ToTable("Users");
            modelBuilder.Entity<IdentityUser>().ToTable("Users");
            modelBuilder.Entity<IdentityRole>().ToTable("Role");
            modelBuilder.Entity<IdentityUserRole<string>>().ToTable("UserRole");
            modelBuilder.Entity<IdentityUserClaim<string>>().ToTable("UserClaim");
            modelBuilder.Entity<IdentityUserLogin<string>>().ToTable("UserLogin");
        }

Answer 10

For .net 6 you need to use the Duende.IdentityServer.EntityFramework.Entities

        protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);
        modelBuilder.Entity<IdentityUser>().ToTable("SecurityUsers");  
        modelBuilder.Entity<IdentityRole>().ToTable("SecurityRole");
        modelBuilder.Entity<IdentityUserRole<string>>().ToTable("SecurityUserRole");
        modelBuilder.Entity<IdentityUserClaim<string>>().ToTable("SecurityUserClaim");
        modelBuilder.Entity<IdentityUserLogin<string>>().ToTable("SecurityUserLogin");
        modelBuilder.Entity<IdentityRoleClaim<string>>().ToTable("SecurityRoleClaims");
        modelBuilder.Entity<IdentityUserToken<string>>().ToTable("SecurityUserTokens");

        modelBuilder.Entity<Duende.IdentityServer.EntityFramework.Entities.PersistedGrant>().ToTable("SecurityPersistedGrant");
        modelBuilder.Entity<Duende.IdentityServer.EntityFramework.Entities.Key>().ToTable("SecurityKey");
        modelBuilder.Entity<Duende.IdentityServer.EntityFramework.Entities.DeviceFlowCodes>().ToTable("SecurityDeviceCode");

    }