Public class MyPageModel
  {
    //this is my marriage list and to use anywhere on my codes
    Public List<Sub_MarriageModel> MarriageList { get; set; }

    //this is person list selected marriage is in this list
    Public List<Person> PersonList{get;set;}
}

public class Sub_MarriageModel
{
    public int ID{ get; set; }  // 0,1,2
    public string Name { get; set; } //single,married
}

public class Person
{
    public int SelectesState{ get; set; }  // 0,1,2
}

@for (int i=0;i<Model.MarriageList.Count;i++)
{
  @Html.DropDownListFor(m=>m.PersonList[i].SelectesState,
                      new SelectList(Model.MarriagesList, "ID", "Name"))
}

<select id="PersonList_0__SelectesState" name="PersonList[0].SelectesState">
 <option value="0">Single</option>
 <option value="1">Married</option>
 <option value="2">Unknow</option>
</select>