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POHow can I map tables using fluent API in ASP.NET MVC 5, Entity Framework 6?
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  1. POHow can I map tables using fluent API in ASP.NET MVC 5, Entity Framework 6?
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    copied!<p>I am trying to create a one to one relationship using C# in Entity Framework 6 using ASP.NET MVC 5 with built-in user authentication.</p> <p>I am able to make tables and connections with the defaults that Entity Framework creates. But when I try to use fluent API.... more specifically when I use on model creating even empty my database migration using the package manager console will fails. How can I map my one to one relationship?</p> <p>My error:</p> <pre><code>//error //my.Models.IdentityUserLogin: : EntityType 'IdentityUserLogin' has no key defined. //Define the key for this EntityType. //my.Models.IdentityUserRole: : EntityType 'IdentityUserRole' has no key defined. //Define the key for this EntityType. //IdentityUserLogins: EntityType: EntitySet 'IdentityUserLogins' is based on type //'IdentityUserLogin' that has no keys defined. //IdentityUserRoles: EntityType: EntitySet 'IdentityUserRoles' is based on type //'IdentityUserRole' that has no keys defined. </code></pre> <p>My Code:</p> <pre><code>namespace my.Models { public class ApplicationUser : IdentityUser { } public class ApplicationDbContext : IdentityDbContext&lt;ApplicationUser&gt; { public ApplicationDbContext() : base("DefaultConnection") { } public DbSet&lt;EngineeringProject&gt; EngineeringProjects { get; set; } public DbSet&lt;EngineeringProject&gt; EngineeringDesigns { get; set; } protected override void OnModelCreating(DbModelBuilder modelBuilder) { modelBuilder.Configurations.Add(new EngineeringDesignMap()); modelBuilder.Configurations.Add(new EngineeringProjectMap()); } } } namespace my.Models.Mapping { public class EngineeringProjectMap : EntityTypeConfiguration&lt;EngineeringProject&gt; { public EngineeringProjectMap() { this.HasRequired(t =&gt; t.EngineeringPd) .WithOptional(t =&gt; t.EngineeringProject); this.HasRequired(t =&gt; t.EngineeringProjectCategory) .WithMany(t =&gt; t.EngineeringProjects) .HasForeignKey(d =&gt; d.CategoryId); } } } </code></pre>
 

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