c# - Passing multiple Collections of data from View to Controller (ASP.NET MVC 5) -

in view have next structure ( control of subject*s each *group):

    @using (html.beginform())     {         @html.antiforgerytoken()         <div class="form-horizontal">             @for (int = 0; < viewbag.allgroups.count; i++)             {                     <h4>@viewbag.allgroups[i].code</h4>                      <select id="e-@i" multiple="multiple">                     @foreach (subject subject in viewbag.allsubjects)                     {                         <option value="@subject.name">@subject.name</option>                     }                     </select>             }             <input type="submit" value="generate" class="btn btn-default" />         </div>     } 

the question how can retreive data (i want receive (1)list of groups , and want (2)list of selected subjects each group in list(1)) in controller?

thank in advance.

recommended way use typed view model object

public class groupviewmodel {  public string code { get;set; }  public list<subject> allsubjects { get; set; } } 

pass list model razor view in controller.

return new view(new list<groupviewmodel>());  // populated one. 

use list in view.

@model ilist<groupviewmodel>  @for (int = 0; < model.count; i++) {  <h4>model[i].code</h4>   <select id="e-@i" multiple="multiple">  @foreach (subject subject in model[i].allsubjects)  {   <option value="@subject.name">@subject.name</option>  }  </select> }