@model List<DateTime>
@{
    object attributes;
    if (ViewBag.Disabled == true)
    {
        attributes = new { @class = "form-control", @multiple="multiple", @disabled = "disabled" };
    }
    else
    {
        attributes = new { @class = "form-control", @multiple="multiple" };
    }
    //var options = new List<SelectListItem>();
    //var startDate = (DateTime?)ViewBag.StartDate;
    //var endDate = (DateTime?)ViewBag.StartDate;
    //var weekEndingDates = (List<DateTime>)ViewBag.WeekEndings;
    //if (weekEndingDates != null && startDate.HasValue && endDate.HasValue && endDate >= startDate)
    //{
    //    var optionGroups = weekEndingDates.Select(t => new SelectListGroup
    //        {
    //            Name = t.ToShortDateString()
    //        }).ToList();
    //    if (optionGroups.Count > 0)
    //    {
    //        var index = 0;
    //        var lastWeekEndingDate = weekEndingDates[index];
    //        var dt = startDate.Value;
    //        while (dt < endDate.Value)
    //        {
    //            if (dt > lastWeekEndingDate)
    //            {
    //                lastWeekEndingDate = weekEndingDates[++index];
    //            }
    //            options.Add(new SelectListItem
    //            {
    //                Group = optionGroups[index],
    //                Text = dt.ToShortDateString(),
    //                Value = dt.ToShortDateString(),
    //                Selected = Model.Contains(dt)
    //            });
    //            dt = dt.AddDays(1);
    //        }
    //    }
    //}
}
@*<div class="input-group">*@
@Html.DropDownList("",new List<SelectListItem>(), attributes)
@*</div>*@