EF CORE viele bis viele fließende API
modelBuilder.Entity<Customer>()
.HasMany(p => p.Colors)
.WithMany(p => p.Customers)
.UsingEntity<Dictionary<string, object>>(
"CustomerColor",
j => j
.HasOne<Color>()
.WithMany()
.HasForeignKey("ColorId"),
j => j
.HasOne<Customer>()
.WithMany()
.HasForeignKey("CustomerId"));
Marko Mijuskovic