在Visual Studio中的程序包管理器控制台上执行“更新数据库”时，出现错误：找不到内容根文件夹

Question

So after adding a new migration in the package manager console in visual studio 2017 and doing the Update-database command, I get the following error:

Could not find content root folder!

The issue seems to be that somehow the entity framework dbcontext is not connected to any DB.

If I run the Get-Dbcontext command I get the same error. Where or how is this linked?

public class ......DbContext : AbpZeroDbContext<Tenant, Role, User, ..........DbContext>, IAbpPersistedGrantDbContext
{
    /* Define an IDbSet for each entity of the application */

    public virtual DbSet<BinaryObject> BinaryObjects { get; set; }

    public virtual DbSet<Friendship> Friendships { get; set; }

    public virtual DbSet<ChatMessage> ChatMessages { get; set; }

    public virtual DbSet<SubscribableEdition> SubscribableEditions { get; set; }

    public virtual DbSet<SubscriptionPayment> SubscriptionPayments { get; set; }

    public virtual DbSet<Invoice> Invoices { get; set; }

    public virtual DbSet<PersistedGrantEntity> PersistedGrants { get; set; }

    public virtual DbSet<Person> Persons { get; set; }
    public virtual DbSet<Position> Positions { get; set; }

    public FutureAthletesDbContext(DbContextOptions<FutureAthletesDbContext> options)
        : base(options)
    {

    }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);

        modelBuilder.Entity<BinaryObject>(b =>
        {
            b.HasIndex(e => new { e.TenantId });
        });

        modelBuilder.Entity<ChatMessage>(b =>
        {
            b.HasIndex(e => new { e.TenantId, e.UserId, e.ReadState });
            b.HasIndex(e => new { e.TenantId, e.TargetUserId, e.ReadState });
            b.HasIndex(e => new { e.TargetTenantId, e.TargetUserId, e.ReadState });
            b.HasIndex(e => new { e.TargetTenantId, e.UserId, e.ReadState });
        });

        modelBuilder.Entity<Friendship>(b =>
        {
            b.HasIndex(e => new { e.TenantId, e.UserId });
            b.HasIndex(e => new { e.TenantId, e.FriendUserId });
            b.HasIndex(e => new { e.FriendTenantId, e.UserId });
            b.HasIndex(e => new { e.FriendTenantId, e.FriendUserId });
        });

        modelBuilder.Entity<Tenant>(b =>
        {
            b.HasIndex(e => new { e.SubscriptionEndDateUtc });
            b.HasIndex(e => new { e.CreationTime });
        });

        modelBuilder.Entity<SubscriptionPayment>(b =>
        {
            b.HasIndex(e => new { e.Status, e.CreationTime });
            b.HasIndex(e => new { e.PaymentId, e.Gateway });
        });

        modelBuilder.ConfigurePersistedGrantEntity();
    }
}

}

Answer 1

这是特定于ASP零角度的问题，我们在文件夹结构中修复了该路径后，此问题已解决。