@model DateTime?
@{
    var attributes = ViewData["htmlAttributes"];
    if (attributes == null)
    {
        if (ViewBag.Disabled == true)
        {
            attributes = new { @class = "form-control", @disabled = "disabled" };
        }
        else
        {
            attributes = new { @class = "form-control date" };
        }
    }
}
@if (ViewBag.Disabled == true)
{
    <div class="input-group">
        @Html.TextBox("", String.Format("{0:d}", (Model.HasValue ? Model.Value.ToShortDateString() : string.Empty)), attributes)<span class="input-group-addon"><i class="fa fa-calendar"></i></span>
    </div>
}
else
{
    <div class="input-group date datepicker">
        @Html.TextBox("", String.Format("{0:d}", (Model.HasValue ? Model.Value.ToShortDateString() : string.Empty)), attributes)<span class="input-group-addon"><i class="fa fa-calendar"></i></span>
    </div>
}