asp.net mvc 3 - Send model with list to controller via ajax -

i have task model:

public class task {     public int id { get; set; }     public string name { get; set; }     public string description { get; set; }     public datetime? duedate { get; set; }     public int projectid { get; set; }     public virtual icollection<useraccount> useraccounts { get; set; }     ... } 

i'd send task model via ajax controller:

function sendform(projectid, useraccountids, name, date, description, target) {     $.ajax({         url: target,         type: "post",         contenttype: 'application/json',         data: json.stringify({             projectid: projectid,             useraccounts: useraccountids,             name : name,             duedate : date,             description : description         }),         success: ajaxonsuccess,         error: function (jqxhr, exception) {             alert('es ist ein fehler bei der Übertragung aufgetreten.');         }     }); } 

this working fine there's big problem useraccounts. variable useraccountids integer array can't mapped icollection useraccounts of task model.

how able create useraccount object each id , map useraccounts collection? objects don't need more id.

how able create useraccount object each id , map useraccounts collection? objects don't need more id.

then need declare as:

public virtual ienumerable<int> useraccounts { get; set; } 

if task entity , not viewmodel best write viewmodel task since mentioned won't need other properties useraccount other id.

update: build useraccounts in javascript:

var useraccounts = {  { id: value1 },  { id: value2 } }; 

then include in post:

data: json.stringify({     projectid: projectid,     useraccounts: useraccounts ,     name : name,     duedate : date,     description : description }), 

that won't work if have dataannotation on useraccount model. , if it's mess have copy required fields of useraccount view, put in hidden field (hacky) , send method.