Question

我得到的错误实际上是编译错误

CS0311：来自...
没有隐式参考转换

我启用了从包管理器迁移

 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" }
         //    );
         //
     }
 }

这句话：

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

生成以下错误：

错误4“PMWeb.Migrations.Configuration”类型不能用作泛型类型或方法“System.Data.Entity.MigrateDatabaseToLatestVersion”中的类型参数“TMigrationsConfiguration”。没有从'PMWeb.Migrations.Configuration'到'System.Data.Entity.Migrations.DbMigrationsConfiguration'的隐式引用转换。 f：\ dropbox \ partymag \ pmweb \ models \ pmdbcontext.cs 52 83 PMWeb

顺便说一句，这之前工作正常，我不知道发生了什么变化。

Answer 1

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

我应该给我的上下文而不是基本上下文类。傻我。：）

Database.SetInitializer（new MigrateDatabaseToLatestVersion <context，configuration =“”>（））;错误

1 个答案: