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ASP.NET Web Forms - Seeder not working with MySQL connection

I am trying to follow the ASP.NET Web Forms tutorial, just with a MySQL connection instead of local: ASP.NET Web Forms - Create the Data Access Layer
I already tested that the connection string works, because I made a dummy table in an existing DB and I can see it in the Server Explorer when I run the app.
But according to the tutorial, it was also supposed to create a DB and tables and seed it. But nothing happens.
This is my connection string:
<add name="myProject" connectionString="Data Source=MY_PC_NAME;User Id=testuser; Password=testpassword; Integrated Security=False" providerName="System.Data.SqlClient"/>
This is the ProjectContext file:
namespace myProject.Models
{
public class ProjectContext : DbContext
{
public ProjectContext() : base("base_name")
{
}
public DbSet<Item> Items { get; set; }
public DbSet<Category> Categories{ get; set; }
}
}
And the ProjectDatabaseInitializer:
public class ProjectDatabaseInitializer : DropCreateDatabaseIfModelChanges<ProjectContext>
{
protected override void Seed(ProjectContext context)
{
GetItems().ForEach(i => context.Items.Add(i));
GetCategories().ForEach(c => context.Categories.Add(c));
}
// some seeding lists below
I then added the initializer to the Global.asax.cs:
Database.SetInitializer(new ProjectDatabaseInitializer());
And both Items and Categories have their corresponding Item and Category models.
But when I run the app, the Server Explorer remains empty.
Note that I modified the original code of the tutorial a bit

How to specify an Entity Framework Connection String in API Project

Question: How do I specify the Entity Framework connection string within a .NET API?
I am accustomed to creating a DAL class and specifying the base connection string like I did here.
public class LocalContext : DbContext
{
public LocalContext() : base("LocalDBContext")
{
}
public DbSet<Weapons> Weapons { get; set;
}
Which in turn grabs the LocalDBContext connection string from the web.config or appsettings.json.
"ConnectionStrings": {
"LocalDBContext": "Server=.;Database=Weapons;Trusted_Connection=True;"
},
This is what I have done in the past in various web apps but not sure if I have to do something different with an API?
I would expect it to call and save into "Weapons" at "Server=." however it instead created a new Database called "LocalDBContext" at the connection of "(localdb)\mssqllocaldb". Any tips would be greatly appreciated!

In EF core you don't need to send a connection to the base class with the constructor, just follow this approach:
public partial class LocalContext : DbContext
{
public LocalContext ()
{
}
public LocalContext(DbContextOptions<LocalContext> options) :
base(options)
{
}
public virtual DbSet<Weapon> Weapons { get; set; }
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
if (!optionsBuilder.IsConfigured)
{
//warning You can move this code to protect potentially sensitive
information
//in connection string.
optionsBuilder.UseSqlServer("Data Source= .;Initial
Catalog=Weapons;Trusted_Connection=True;");
}
}
}

The given String "LocalDBContext" is interpreted as Connectionstring, see official Documentation on DbContext(String).
Do something like:
public class LocalContext : DbContext
{
public LocalContext (DbContextOptions<LocalContext> options)
: base(options)
{
}
....

I have some questions below:
Questions:
Did you add Entity data model in your API solution?
If yes, didn't you save connection string in config file while adding EDM?
While adding EDMX in solution, model window asks to connect the database. Once EDM connects with database, it asks to save connection string in configuration file. You can add tables, functions, SPs, views. This way EDM connects with actual database rather picking different database.

MVC Identity Entity Framework model update fails - "Already an object" error

MVC Identity Entity Framework model seems to be broken, preventing model updates. It appears that entity framework models created using IdentityDbContext cannot be updated.
I am using MVC Identity and EF, with a production database as well as a development database. The setup is standard - a project - Models, with the EF configuration, DbSets and EF classes. To create the dev database, I have a simple program listed below. I have used this basic configuration without any issues for a long time. But after moving to MVC Identity, I am now unable to update the dev database by adding new classes to my model. Replacing the reference to IdentityDbContext with the plain DbContext removes the errors. Wonder what I am doing wrong.
Not sure if this is relevant, but many of the entities in the model inherit from a BaseEF class to include common fields.
Models and createDb both use EF 6.0.0.0:
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework,
Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
I get the following errors:
(1) If I delete the dev database, and run the createDb program, I get the error, "There is already an object named activities in the database".
(2) If I allow the program to delete the database, I get the error that the model backing the database has changed.
I have tried adding and deleting migrations in the Models project without any success.
I am creating the dev database using the following program:
namespace AzureV1_CreateTestDB
{
class Program
{
static void Main(string[] args)
{
createDb(true);
}
public static void createDb(bool deleteDatabase)
{
IdentityEFContext dbContext = new IdentityEFContext();
if (System.Configuration.ConfigurationManager.ConnectionStrings["IdentityEFContext"].ConnectionString.Contains("EFUpdatetest1"))
{
if (dbContext.Database.Exists())
{
if (deleteDatabase)
{
// The following line throws this error:
// System.InvalidOperationException: 'The model backing the 'IdentityEFContext' context has changed since the database was created. Consider using Code First Migrations to update the database (http://go.microsoft.com/fwlink/?LinkId=238269).'
dbContext.Database.ExecuteSqlCommand(TransactionalBehavior.DoNotEnsureTransaction
, string.Format("ALTER DATABASE {0} SET SINGLE_USER WITH ROLLBACK IMMEDIATE", dbContext.Database.Connection.Database));
dbContext.Database.Delete();
}
}
initDBContext(dbContext);
System.Data.Entity.Core.Objects.ObjectContext oContext = ((IObjectContextAdapter)dbContext).ObjectContext;
if (System.Configuration.ConfigurationManager.ConnectionStrings["IdentityEFContext"].ConnectionString.Contains("EFUpdatetest1"))
{
ExecuteSql(oContext, "ALTER DATABASE EFUpdatetest1 SET ALLOW_SNAPSHOT_ISOLATION ON");
ExecuteSql(oContext, "ALTER DATABASE EFUpdatetest1 SET READ_COMMITTED_SNAPSHOT ON");
}
// insert data
InsertData(dbContext);
closeDBContext(dbContext);
MessageBox.Show("Database successfully created");
}
}
public static void initDBContext(IdentityEFContext dbContext)
{
// The following line throws the error:
// System.Data.SqlClient.SqlException: 'There is already an object named 'Activities' in the database.'
while (((IObjectContextAdapter)dbContext).ObjectContext.Connection.State.ToString() != "Open")
{
((IObjectContextAdapter)dbContext).ObjectContext.Connection.Open();
}
}
}
}
// connectionString in createDb
<connectionStrings>
<add name="IdentityEFContext"
providerName="System.Data.SqlClient"
connectionString="Server=localhost; Integrated Security=False; Database=EFUpdatetest1; User Id=dbtest; Password=Hello.123" />
</connectionStrings>
The EF configuration information is below:
// EntityContext.cs
using Microsoft.AspNet.Identity.EntityFramework;
using Models;
using System.Data.Entity;
using System.Data.Entity.Migrations;
namespace DataAccess
{
//public class IdentityEFContext : DbContext /* this works */
public class IdentityEFContext : IdentityDbContext<User>
{
public IdentityEFContext() : base("IdentityEFContext") { }
static IdentityEFContext()
{
Database.SetInitializer<IdentityEFContext>(new IdentityEFInit());
}
public static IdentityEFContext Create()
{
return new IdentityEFContext();
}
public DbSet<Activity> Activities { get; set; }
...
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.Configurations.Add(new ActivityConfig());
...
}
}
//public class IdentityEFInit : DropCreateDatabaseIfModelChanges<IdentityEFContext>
public class IdentityEFInit : CreateDatabaseIfNotExists<IdentityEFContext>
{
protected override void Seed(IdentityEFContext context)
{
PerformInitialSetup(context);
base.Seed(context);
}
public void PerformInitialSetup(IdentityEFContext context)
{
// initial configuration will go here
}
}
}
// Entity configurations are as:
namespace DataAccess
{
public class BaseEfConfiguration<TEntity> : EntityTypeConfiguration<TEntity>
where TEntity : BaseEF
{
public BaseEfConfiguration()
{
Property(b => b.ServerVersion).IsOptional();
...
}
}
public class ActivityConfig : BaseEfConfiguration<Activity>
{
public ActivityConfig()
: base()
{
ToTable("Activities");
Property(a => a.Name).IsRequired();
HasRequired(a => a.CreatedBy).WithMany(u => u.ActivitiesCreated).WillCascadeOnDelete(false);
...
}
}
}
// connectionstring in app.config
<connectionStrings>
<add name="IdentityEFContext"
providerName="System.Data.SqlClient"
connectionString="Server=localhost; Integrated Security=False; Database=EFUpdateTest1_Azure; User Id=dbtest; Password=Hello.123" />
</connectionStrings>
The User class is:
public class User : IdentityUser
{
public string Alias { get; set; }
...
}

I had not added the migration after making the change to the model and before creating the test database. I did not realize that if the project containing the entity model has migrations enabled, then the project which uses the model to create the database will use the existing migrations information to create the database, not the EntityTypeConfiguration information.
The solution was to first add a migration after updating the model. Then attempt to create the test database as usual.
Hope this is useful to someone.

Azure mvc web app deploy with 2 dbcontexts and class library

Hi guys i am trying to deploy mvc application to azure. so far, ive done half of the work. so, main web application with AplicationDbContext is were my Identity2.0 tables are for user and roles and so on. Now, i have DAL class library for model and QuizContext for the rest of the application. I what to use one instance of database for storing these two contexts and as u can see from the server explorer on the left its done on localhost, but when i try to publish it on azure only mvc web project is deployed. Just to be sure ive connected with sql management studio to azure database and it only shows Identity tables. After searching for few days online to find solution i gave up cuz they are all basic stuff.
Can u help me make that happen :D My goal is to deploy web application with class library(s) and 2 DbContexts using one database on azure.
Thank u very much.
link to pictures so u get better understanding of my problem
http://testic1.azurewebsites.net/

there is no error msg. at publish console i just get project published - 1 and thats it.
this is dbcontext from class library
namespace Quiz.DAL
{
public class QuizContext : DbContext
{
public QuizContext() : base("name=DefaultConnection")
{
}
public virtual DbSet<Option> Options { get; set; }
public virtual DbSet<Question> Questions { get; set; }
public virtual DbSet<Category> Categories { get; set; }
public virtual DbSet<Test> Tests { get; set; }
}
}
this is dbcontext from mvc web application
namespace Quiz.Models
{
public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
public ApplicationDbContext()
: base("DefaultConnection", throwIfV1Schema: false)
{
}
public static ApplicationDbContext Create()
{
return new ApplicationDbContext();
}
}
}
this is connection string from mvc web project, DAL class library does not have connection string
<connectionStrings>
<add name="DefaultConnection" connectionString="Data Source=(LocalDb)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\Quiz.mdf;Initial Catalog=Quiz;Integrated Security=True" providerName="System.Data.SqlClient" />
</connectionStrings>

\Web Api and Frontend database

I want to have ASP.NET MVC website that would have some frontend for looking into, adding and other things with data. And then I want to have Web Api for getting data for mobile devices and so. I want to use code first from EF (and I am using Ninject). I create classes for hotel and others. I created HotelManagerContext and database is created and looks good. I am adding data by HomeController and by Repository for this. When I looked at database in Visual Studio data are there. But when I tried to use my HotelsController for Api datacontext is empty. What's wrong? What I forget to set? Something with connection string or what?
This is my ApiController:
public class HotelsController : ApiController
{
private IHotelRepository _hotelRepo { get; set; }
public HotelsController(IHotelRepository repo)
{
_hotelRepo = repo;
}
// GET api/Hotels
public IEnumerable<Hotel> GetHotels()
{
return _hotelRepo.GetAll();
}
// GET api/Hotels/5
public Hotel Gethotel(int id)
{
return _hotelRepo.Get(id);
}
}
This is part of my controller for frontend:
public class HomeController : Controller
{
private IHotelRepository _hotelRepo { get; set; }
public HomeController(IHotelRepository repo)
{
_hotelRepo = repo;
}
public ActionResult Index()
{
return View();
}
// next methods, for adding data and so
}
This is my repository:
public class HotelRepository : IHotelRepository
{
private HotelManagerContext db { get; set; }
public HotelRepository()
:this (new HotelManagerContext())
{
}
public HotelRepository(HotelManagerContext hotelManagerContext)
{
// TODO: Complete member initialization
this.db = hotelManagerContext;
}
public Models.Hotel Get(int id)
{
return db.hotels.SingleOrDefault(h => h.hotId == id);
}
public IQueryable<Models.Hotel> GetAll()
{
return db.hotels;
}
public Hotel Add(Hotel hotel)
{
db.hotels.Add(hotel);
db.SaveChanges();
return hotel;
}
}
This is my HotelManagerContext:
public class HotelManagerContext : DbContext
{
public HotelManagerContext() : base("name=HotelManagerContext")
{
}
public DbSet<Hotel> hotels { get; set; }
}
Edit:
private static void RegisterServices(IKernel kernel)
{
kernel.Bind<IHotelRepository>().To<HotelRepository>();
GlobalConfiguration.Configuration.DependencyResolver = new NinjectResolver(kernel);
}
Edit2:
Here is my connection string:
<add name="HotelManagerContext" connectionString="Data Source=(localdb)\v11.0; Initial Catalog=HotelManagerContext-20121219191411; Integrated Security=True; MultipleActiveResultSets=True; AttachDbFilename=|DataDirectory|HotelManagerContext-20121219191411.mdf" providerName="System.Data.SqlClient" />
And I just found that even in HomeController I have empty datacontext. So when I check content of database in Server Explorer there are data which I added (in HomeController). But everytime when I have request page (web api or frontend) datacontext is empty and I can add items there are counting from zero but in database there are already next but can't get it. It's really weird.

What does your connection string look like? "name=HotelManagerContext" seems incomplete. I think you would want to also explicitly specify providerName="System.Data.EntityClient" at the very least (see here). In any case, it is common practice to put the connection string in the Web.Config file and assign the name there (i.e. name="HotelMamangerContext") then, under normal circumstances, EF will just discover the connection string by convention as long as the name of your DbContext class matches the name of the connection string in Web.Config (otherwise you can still specify it explicitly in the constructor).
On a different note (I don't think this should be related to you current problem), you could consider injecting you DbContext as well. Then you could drop the parameter-less constructor on your repository class unless you need to keep it around for another reason such as unit testing. Also, if you are using Ninject.Web.Common, you may want to consider scoping the instances to the request level (see InRequestScope).
...
kernel.Bind<HotelMamangerContext>().ToSelf().InRequestScope();
kernel.Bind<IHotelRepository>().To<HotelRepository>().InRequestScope();
...

I can't find solution for this so I create new project and I did everything like in the question. I have same classes, copy and paste code frome question. I can't find any important difference but second time it's working.
I know this isn't exactly solution but in this case I could start my project from begging so I tried it and it really helps. Just don't know where is problem.