1 <div class="col-md-md-4">
2                  <div class="input-group">
3                    <span class="input-group-addon">部门：</span>                  
4                     @Html.DropDownList("f_GroupID", ViewData["ConsumerGroup"] as SelectList, "请选择",new { @class = "form-control" })
5                 </div>
6 </div>

                List<Acc_Group> AG = sdt.Acc_Group.ToList();
                SelectList select = new SelectList(AG, "f_GroupID", "f_GroupName");
                ViewData["ConsumerGroup"] = select;

1  public partial class Acc_Group
2     {
3         public int f_GroupID { get; set; }
4         public string f_GroupName { get; set; }
5         public int f_GroupNO { get; set; }
6         public int f_ParentId { get; set; }
7     }

1  @Html.DropDownList("database",null, "请选择", new { @class = "form-control" })

　　　　　　　　　List<Acc_Group> AG = sdt.Acc_Group.ToList();
                var selectItemList = new List<SelectListItem>();
                {
                    new SelectListItem() { Value = http://www.mamicode.com/"0", Text = "选择部门", Selected = true };
                };
                var selectList = new SelectList(AG, "f_GroupID", "f_GroupName");
                selectItemList.AddRange(selectList);
                ViewBag.database = selectItemList;