1.Dictionary添加属性
@{
Layout = "~/Views/Shared/_EditLayout.cshtml";
Dictionary<string,object> dic=new Dictionary<string,object>();
dic.Add("style", "background-color:#DCEEF0;height:280px;190px;");
dic.Add("size", "4");
}
@Html.ListBox("lbHas", new List<SelectListItem>() { }, dic);
2. new { @class ="mycalss"}