asp.net mvc - Generate list in view and pass it to controller -

i'm writing hotel reservation web site asp.net , mvc 4. have class named reservation have list of contacts. in create view want dynamically create contacts. (number of contacts = adults + kids , determined in create reservation view) how post contact information controller?

public partial class reservation {     public int id { get; set; }     public int roomtype_id { get; set; }     public system.datetime fromdate { get; set; }     public system.datetime todate { get; set; }     public byte adults { get; set; }     public byte kids { get; set; }     public decimal price { get; set; }     public int user_id { get; set; }     public int state_id { get; set; }     public virtual reservationstate reservationstate { get; set; }     public virtual roomtype roomtype { get; set; }     public virtual user user { get; set; }     public virtual icollection<transaction> transactions { get; set; }     public virtual icollection<contact> contacts { get; set; } } 

should set maximum number contacts(for example 5 , write this?

    [httppost]     public actionresult create(reservation reservation,contact adult1,contact adult2, contact adult3, contact adult4, contact adult5, contact kid1,contact kid2, contact kid3)     {         if(reservation.adults>0)             reservation.contacts.add(adult1);         if(reservation.adults>1)             reservation.contacts.add(adult2);         ...         if (modelstate.isvalid)         {             _db.reservations.add(reservation);             _db.savechanges();             return redirecttoaction("index");         }     } 

it's dirty there better way? can pass list of contacts?

@for (var = 0; < model.contacts.count(); i++) {     @html.editorfor(m => m.contacts[i]) } 

the thing need instantiate list of new contacts. why view model preferable in constructor based upon value on view model:

public class reservationviewmodel {     public reservationviewmodel()     {         contacts = new list<contact>();         (var = 0; < adults + kids; i++)         {             contacts.add(new contact());         }     }      ... } 

alternatively, after see code gets generated you'll understand how modelbinder expects receive data back. inputs like:

<input id="contacts_0__name" name="contacts[0].name" /> 

where 0 iteration count of contacts. if simulate structure manually, modelbinder pick data well.