c# - How to map an object with a custom constructor from a dynamic object with automapper -

i'm testing automapper see if can need in other project, i've made objects in console project, simplified should have need:

public class person {     public person(list<banco> bancos)     {         this._bancos = bancos;     }      public int id { get; set; }     public string nombre { get; set; }     public dni dni { get; set; }     private list<banco> _bancos;      public list<banco> bancos     {         { return _bancos; }     }  }  public class dni {     private dni() { }     public dni(dni2 letra)     {         this._letra = letra;         console.writeline("****dni constructor****");     }      public int id { get; set; }     public int personid { get; set; }     public string number { get; set; }     private dni2 _letra;      public dni2 letra     {         { return _letra; }     }  }  public class dni2 {     public int id { get; set; }     public int dniid { get; set; }     public string letra { get; set; } }  public class banco {     public int id { get; set; }     public string number { get; set; } } 

as can see, objects person , dni have custom cosntructor, , setted last one's default parameterless constructor private.

now, need map nested objects custom constructors dynamic objects, made in same console project:

class program {     static void main(string[] args)     {         //ojo todo: ¿si un objeto dinamico tiene propiedades de varios tipos, es capaz de diferenciar qué tipo pertenece cada prop?         //¿qué pasa si un valor del dinamico es del tipo equivocado?         var bancoconfig = new mapperconfiguration(cfg => cfg.createmissingtypemaps = true);         var dni2config = new mapperconfiguration(cfg => cfg.createmissingtypemaps = true);         dni2config.assertconfigurationisvalid();         var bancomapper = bancoconfig.createmapper();         var dni2mapper = dni2config.createmapper();          var dni2dbconfig = new mapperconfiguration(cfg =>         {             cfg.createmissingtypemaps = true;             cfg.recognizeprefixes("dni2");         });         var dni2dbmapper = dni2dbconfig.createmapper();          var dniconfig = new mapperconfiguration(cfg =>         {             cfg.createmap<dynamic, dni>()             .constructusing(dyn => new dni(dni2dbmapper.map<dni2>(dyn)));             /*.formember(dest => dest.id, opts => opts.mapfrom<int>(src => (int)(src idictionary<string, object>)["id"]))             .formember(dest => dest.number, opts => opts.mapfrom<string>(src => (string)(src idictionary<string, object>)["number"]))             .formember(dest => dest.personid, opts => opts.mapfrom<int>(src => (int)(src idictionary<string, object>)["personid"]));*/             /*cfg.createmap<idictionary<string, object>, dni>()             .constructusing(dyn => new dni(dni2dbmapper.map<dni2>(dyn dynamic)))             .formember(dest => dest.id, opts => opts.mapfrom<int>(src => (int)(src["id"])))             .formember(dest => dest.number, opts => opts.mapfrom<string>(src => (string)(src["number"])))             .formember(dest => dest.personid, opts => opts.mapfrom<int>(src => (int)(src["personid"])));*/              cfg.createmissingtypemaps = true;         });         var dnimapper = dniconfig.createmapper();          dynamic d = new { id = 0, number = "1234" };         banco banco = bancomapper.map<banco>(d);         console.writeline("banco: " + environment.newline);         console.writeline(banco.id + environment.newline + banco.number);         console.readline();          d = new { id = 1, dniid = 0, letra = "a" };         dni2 dni2 = dni2mapper.map<dni2>(d);         console.writeline("dni2: " + environment.newline);         console.writeline(dni2.id + environment.newline + dni2.dniid + environment.newline + dni2.letra);         console.readline();          d = new { id = 2, personid = 5, number = "5678", dni2id = 2, dniid = 2, letra = "b" };         dni2 d2 = dni2dbmapper.map<dni2>(d);         dni dni = dnimapper.map<dni>(d);         console.writeline("dni: " + environment.newline);         console.writeline(dni.id + environment.newline + dni.personid + environment.newline + dni.number + environment.newline);         console.writeline("dni.dni2: "+dni.letra.id + environment.newline + dni.letra.dniid + environment.newline + dni.letra.letra);         console.readline();     } } 

that gives result in console:

banco:  0 1234  dni2:  1 0  ****dni constructor**** dni:  2 5 5678  dni.dni2: 0 0 

so, creates dni object , set members, go through public constructor... when goes through constructor doesn't set dni2 property.
if coment dynamic line in dni configuration:

        var dniconfig = new mapperconfiguration(cfg =>         {             cfg.createmap<dynamic, dni>()             .constructusing(dyn => new dni(dni2dbmapper.map<dni2>(dyn)));             /*.formember(dest => dest.id, opts => opts.mapfrom<int>(src => (int)(src idictionary<string, object>)["id"]))             .formember(dest => dest.number, opts => opts.mapfrom<string>(src => (string)(src idictionary<string, object>)["number"]))             .formember(dest => dest.personid, opts => opts.mapfrom<int>(src => (int)(src idictionary<string, object>)["personid"]));*/             /*cfg.createmap<idictionary<string, object>, dni>()             .constructusing(dyn => new dni(dni2dbmapper.map<dni2>(dyn dynamic)))             .formember(dest => dest.id, opts => opts.mapfrom<int>(src => (int)(src["id"])))             .formember(dest => dest.number, opts => opts.mapfrom<string>(src => (string)(src["number"])))             .formember(dest => dest.personid, opts => opts.mapfrom<int>(src => (int)(src["personid"])));*/              //cfg.createmissingtypemaps = true;         }); 

... not have config make dynamic, result is:

banco:  0 1234  dni2:  1 0  ****dni constructor**** dni:  0 0   dni.dni2: 2 2 b 

the commented lines in configuration part of i've tried, including 2 days searching here , google.
seems program telling me: map dynamic or use custom constructor, can not both, suck it.

the intriguing part me is: using first configuration, isn't mapping dni2 object, mapping dni object using constructor(the line @ console), don't have object needed parameters, using constructor without required parameter o_o
honestly, know i'm amateur , all, thought using reflection couldn't use constructor(neither other method) without of required parameters.

so: is there way map nested object custom constructor dynamic object automapper?

i have found solution this:

        var dnidynconfig = new mapperconfiguration(cfg => cfg.createmissingtypemaps = true);         var dnidynmapper = dnidynconfig.createmapper();         var dniconfig = new mapperconfiguration(cfg =>         {             cfg.createmap<dynamic, dni>()             .constructusing(dyn => new dni(dni2dbmapper.map<dni2>(dyn)))             .aftermap((src, dest) =>             {                 dnidynmapper.map(src, dest, typeof(object), typeof(dni));             });         }); 

i don't since seems have map object twice, works. appreaciate if came better though.