Database.SetInitializer（new MigrateDatabaseToLatestVersion <Context, Configuration> （））； 错误

Question

Well the error I am getting is actually a compiler error which is

CS0311: there is no implicit reference conversion from...

I enabled migrations from package manager

 public class Configuration : DbMigrationsConfiguration<PMDBContext>
 {
     public Configuration()
     {
         AutomaticMigrationsEnabled = true;
         AutomaticMigrationDataLossAllowed = true;
         ContextKey = "Context.DB.Context";
     }

     protected override void Seed(PMWeb.Models.PMDBContext context)
     {
         //  This method will be called after migrating to the latest version.
         //  You can use the DbSet<T>.AddOrUpdate() helper extension method 
         //  to avoid creating duplicate seed data. E.g.
         //
         //    context.People.AddOrUpdate(
         //      p => p.FullName,
         //      new Person { FullName = "Andrew Peters" },
         //      new Person { FullName = "Brice Lambson" },
         //      new Person { FullName = "Rowan Miller" }
         //    );
         //
     }
 }

And this statement:

Database.SetInitializer(new MigrateDatabaseToLatestVersion<DbContext, Configuration>()); 

generates the following error:

Error 4 The type 'PMWeb.Migrations.Configuration' cannot be used as type parameter 'TMigrationsConfiguration' in the generic type or method 'System.Data.Entity.MigrateDatabaseToLatestVersion'. There is no implicit reference conversion from 'PMWeb.Migrations.Configuration' to 'System.Data.Entity.Migrations.DbMigrationsConfiguration'. f:\\dropbox\\partymag\\pmweb\\models\\pmdbcontext.cs 52 83 PMWeb

BTW, this was working fine before, I do not know what changed.

Answer 1

Database.SetInitializer(new MigrateDatabaseToLatestVersion<PMDBContext, Configuration>()); 

I was supposed to give my context not the base context class. Silly me. :)