相关疑难解决方法(0)

(对不起,这里有几个项目,但似乎没有一个允许我让这个工作.)

我想创建一个允许多选的DropDownList.我能够填充列表,但我无法获得当前选定的值似乎工作.

我的控制器中有以下内容:

ViewBag.PropertyGroups = from g in db.eFinGroups
                              where g.GroupType.Contents == "P"
                              select new
                              {
                                  Key = g.Key,
                                  Value = g.Description,
                                  Selected = true
                              };


ViewBag.SelectedPropertyGroups = from g in company.Entities
                   .First().Properties.First().PropertyGroups 
                   select new { 
                                g.eFinGroup.Key, 
                                Value = g.eFinGroup.Description };

@Html.DropDownListFor(model => model.PropertyGroupsX, 
   new MultiSelectList(ViewBag.PropertyGroups
             , "Key", "Value"
             , ViewBag.SelectedPropertyGroups), 
new { @class = "chzn-select", data_placeholder = "Choose a Property Group", multiple = "multiple", style = "width:350px;" })