using Microsoft.EntityFrameworkCore; namespace Shipping { public class ShippingDbContext : DbContext { public DbSet<ShippingLabel> ShippingLabels { get; set; } protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder) { optionsBuilder.UseInMemoryDatabase("DistributedTracingDemo_Shipping"); base.OnConfiguring(optionsBuilder); } protected override void OnModelCreating(ModelBuilder modelBuilder) { modelBuilder.Entity<ShippingLabel>() .HasKey(x => x.OrderId); base.OnModelCreating(modelBuilder); } } }