c# - How to solve circular reference? -

how solve circular reference problems class has class b 1 of properties, while class b has class 1 of properties?

how architect kind of problems?

if take example of nhibernate, there parent-child relationship between objects.

how able handle parent child scenarios?

in cases when i've had have 2 things reference each other, i've created interface remove circular reference. example:

before

public class foo {     bar mybar; }  public class bar {     foo myfoo; } 

dependency graph:

foo     bar  ^       ^  |       | bar     foo 

foo depends on bar, bar depends on foo. if in separate assemblies, have problems building, particularly if clean rebuild.

after

public interface ibar { }  public class foo {     ibar mybar; }  public class bar : ibar {     foo myfoo; } 

dependency graph:

foo, ibar     ibar     ^          ^     |          |    bar        foo 

both foo , bar depend on ibar. there no circular dependency, , if ibar placed in own assembly, foo , bar being in separate assemblies no longer issue.