Enable Migrations Not working - entity-framework

Question

I have an application which has three layers.I am using EntityFramework 6.1 and code first migrations using existing database.The three layers are given below:
1.Presententation Layer:ConceptuCodeFirstMigrationDemo
Simply a Console Application for simplicity
Data Layer Consists of Context and Initializer.The codes are given below:
namespace ConceptuCodeFirstMigrationDemo.Data.DataContext
{
using System;
using System.Data.Entity;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using ConceptuCodeFirstMigrationDemo.Domain;
public partial class ConceptuContext : DbContext,IDisposable
{
public ConceptuContext()
: base("name=ConceptuContext")
{
}
public virtual DbSet<User> Users { get; set; }
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Entity<User>()
.WithRequired(e => e.User)
.HasForeignKey(e => e.CreatedBy)
.WillCascadeOnDelete(false);
}
}
}
ConceptuInitializer.Cs
namespace ConceptuCodeFirstMigrationDemo.Data.DataContext
{
public class ConceptuInitializer: System.Data.Entity.CreateDatabaseIfNotExists<ConceptuContext>
{
}
}
Appconfig:
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<entityFramework>
<contexts>
<context type="ConceptuCodeFirstMigrationDemo.Data.DataContext.ConceptuContext, ConceptuCodeFirstMigrationDemo.Data">
<databaseInitializer type="ConceptuCodeFirstMigrationDemo.Data.DataContext.ConceptuInitializer, ConceptuCodeFirstMigrationDemo.Data" />
</context>
</contexts>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
<connectionStrings>
<add name="ConceptuContext" connectionString="data source=AMITABHA-PC;initial catalog=Conceptu;user id=sa;password=lovediya;MultipleActiveResultSets=True;App=EntityFramework" providerName="System.Data.SqlClient" />
</connectionStrings>
</configuration>
Domain Layer: Consists of entity class for example user
After writing a new class when I try to enable migrations using Enable-Migrations
showing
No context type was found in the assembly 'ConceptuCodeFirstMigrationDemo'.
After I tried the following command:
Enable-Migrations -ContextTypeName ConceptuCodeFirstMigrationDemo.Data.DataContext.ConceptuContext
this shows following error
The context type 'ConceptuCodeFirstMigrationDemo.Data.DataContext.ConceptuContext' was not found in the assembly 'ConceptuCodeFirstMigrationDemo'.
After I tried the following command
Enable-Migrations ConceptuCodeFirstMigrationDemo.Data.DataContext.ConceptuContext
It shows the following error
Enable-Migrations : A positional parameter cannot be found that accepts argument 'ConceptuCodeFirstMigrationDemo.Data.DataContext.Concept
uContext'.
At line:1 char:18
+ Enable-Migrations <<<< ConceptuCodeFirstMigrationDemo.Data.DataContext.ConceptuContext
+ CategoryInfo : InvalidArgument: (:) [Enable-Migrations], ParameterBindingException
+ FullyQualifiedErrorId : PositionalParameterNotFound,Enable-Migrations

Answer 1

Try this.
Enable-Migrations -ContextTypeName ConceptuCodeFirstMigrationDemo.Data.DataContext.ConceptuContext -ProjectName ConceptuCodeFirstMigrationDemo