没有应用迁移。数据库已经是最新的。完毕

Question

我有一套模型：

我已经运行添加迁移命令

dotnet ef migrations add <migration name>

现在我设置了以下迁移：

当我启动 dotnet ef database update 时，我看到我的 tables 是 SQL 客户端并且一切正常。

当我连接到另一个数据库时出现问题。我想将迁移应用到新数据库。但是当我运行 dotnet ef database update 我看到 No migrations were applied. The database is already up to date. Done. 消息。该命令只创建了我 __EFMigrationsHistory table 并且它是空的。我如何在新数据库上使用我的迁移？

这是我的 ApplicationContext

public class ApplicationContext : DbContext
{
    private readonly string _connectionString;

    public ApplicationContext(IConfiguration configuration)
    {
        _connectionString = configuration.GetConnectionString("Recipes");
    }

    public DbSet<User> Users { get; set; }
    public DbSet<Recipe> Recipes { get; set; }
    public DbSet<RecipeStep> RecipeSteps { get; set; }
    public DbSet<Ingredient> Ingridients { get; set; }
    public DbSet<Category> Categories { get; set; }
    public DbSet<Advertising> Advertisings { get; set; }
    public DbSet<FileModel> Files { get; set; }
    public DbSet<RecipeLike> RecipeLikes { get; set; }
    public DbSet<RecipeDislike> RecipeDislikes { get; set; }
    public DbSet<Bookmark> Bookmarks { get; set; }
    public DbSet<Purchase> Purchases { get; set; }

    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        optionsBuilder.UseNpgsql(_connectionString);
    }
}

和appsettings.json

{
  "ConnectionStrings": {
    "Recipes" : "connection string is here"
  },
  "Logging": {
    "LogLevel": {
      "Default": "Debug",
      "System": "Information",
      "Microsoft": "Information"
    }
  }
}

Answer 1

好的，我已经解决了我的问题。我丢失了 .Designer.cs 个文件。

丢了也会有同样的问题

没有应用迁移。数据库已经是最新的。完毕

No migrations were applied. The database is already up to date. Done

entity-framework

entity-framework-migrations

.net-core