ApplicationDbContext Not Existing For Model

[RDoZZ]

I am learning .Net and am making a hotel booking system but I get the error (The Type or namespace ApplicationDbContext could not be found) but the thing is I have an ApplicationDbContext class in my data directory. How do I access ApplicationDbContext for my model here?


Room.cs

  public class Room

    {

        public int Id { get; set; }

        public int Name { get; set; }

        public int Location { get; set; }

        public int Type { get; set; }

        public string[] Types => new string[] { "First Class", "Second Class", "Third Class" };



        [NotMapped]

        public virtual List<Room> Rooms => new ApplicationDbContext().Rooms.ToList();



        public virtual List<Room_Usage> Usages => new ApplicationDbContext().Room_Usage.ToList().where(x => x.Room_id == Id).toList();

    }

ApplicationDBContext.cs

public class ApplicationDbContext : IdentityDbContext

{

    public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options)

        : base(options)

    {

    }

    public DbSet<hotel_reservation.Models.Guest>? Guest { get; set; }

    public DbSet<hotel_reservation.Models.Room>? Room { get; set; }

    public DbSet<hotel_reservation.Models.Room_Usage>? Room_Usage { get; set; }

}

 

[Skydiver]

Presence in a directory doesn't matter. Visibility of the file in your .csproj matters. Namespace that the class is declared in matters. Assembly that the class is in matters.