Issue with initializing database with EF - asp.net

Question

I'm trying to initialize a database with sample data and I get an error:
Failed to set database initializer of type
'Blog.Models.DAL.BlogInitializer,Blog' for DbContext type
'Blog.Models.DAL.BlogContext, Blog' specified in the application
Inner exception is like that:
Can't find a file or an assembly 'Blog' or one of its dependencies.
Can't find the specified file.
I have Blog.Model and Blog.WebUI in separate projects in the same Blog solution.
I have edited Web.config (In Blog.WebUI) file like that:
<connectionStrings>
<add name="BlogContext" connectionString="Data Source=(LocalDb)\MSSQLLocalDB;Initial Catalog=Blog;Integrated Security=SSPI;" providerName="System.Data.SqlClient"/>
</connectionStrings>
<entityFramework>
<contexts>
<context type="Blog.Models.DAL.BlogContext, Blog">
<databaseInitializer type="Blog.Models.DAL.BlogInitializer, Blog" />
</context>
</contexts>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="mssqllocaldb" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
</configuration>
In Server Explorer I see an accessible database created by it, but no tables inside.
BlogContext class:
namespace Blog.Models.DAL
{
public class BlogContext : DbContext
{
public BlogContext() : base("BlogContext")
{
}
public DbSet<Post> Posts { get; set; }
}
}
And initializer:
namespace Blog.Models.DAL
{
public class BlogInitializer : DropCreateDatabaseIfModelChanges<BlogContext>
{
protected override void Seed(BlogContext context)
{
var posts = new List<Post>
{
new Post { Title="sadasd", Content="asdsa", Date=DateTime.Parse("2016-11-13"), Language="pl" },
new Post { Title="sadasd", Content="asdsa", Date=DateTime.Parse("2016-11-13"), Language="pl" },
new Post { Title="sadasd", Content="asdsa", Date=DateTime.Parse("2016-11-13"), Language="pl" },
new Post { Title="sadasd", Content="asdsa", Date=DateTime.Parse("2016-11-13"), Language="pl" },
new Post { Title="sadasd", Content="asdsa", Date=DateTime.Parse("2016-11-13"), Language="pl" }
};
posts.ForEach(p => context.Posts.Add(p));
context.SaveChanges();
}
}
}

Answer 1

EF failed to instantiate the database initalizer for your DbContext instance named BlogContext.
In the configuration you have configured the correct value for type of your database initializer which is correct:
<contexts>
<context type="Blog.Models.DAL.BlogContext, Blog">
<databaseInitializer type="Blog.Models.DAL.BlogInitializer, Blog" />
</context>
</contexts>
The issue is that you're not using the correct assembly name Blog. You need to go to your project "Properties" via the context menu or Alt + F4 and copy the correct assembly name. Then put it like this:
<contexts>
<context type="Blog.Models.DAL.BlogContext, [The correct assemblby name]">
<databaseInitializer type="Blog.Models.DAL.BlogInitializer, [The correct assemblby name]" />
</context>
</contexts>