Html.DropDownList_html/css_WEB-ITnose

 List Countyitems = new List()            {                //new SelectListItem(){Text="--请选择--", Value="",Selected = false},                new SelectListItem(){Text="钦北区", Value="0",Selected = true},                new SelectListItem(){Text="钦南区", Value="1",Selected = false},                new SelectListItem(){Text="灵山县", Value="2",Selected = false},                new SelectListItem(){Text="浦北县", Value="3",Selected = false},            };            List Cityitems = new List()            {                //new SelectListItem(){Text="--请选择--", Value="",Selected = false},                new SelectListItem(){Text="钦州市", Value="0",Selected = true}            };            List Provinceitems = new List()            {                //new SelectListItem(){Text="--请选择--", Value="",Selected = false},                new SelectListItem(){Text="广西省", Value="0",Selected = true}            };            SelectList CountyList = new SelectList(Countyitems, "Value", "Text", 0);            SelectList CityList = new SelectList(Cityitems, "Value", "Text", 0);            SelectList ProvinceList = new SelectList(Provinceitems, "Value", "Text", 0);            ViewData["County"] = CountyList;            ViewData["City"] = CityList;            ViewData["Province"] = ProvinceList;

前台

                    @Html.LabelFor(m => m.Province)                                            @Html.DropDownList("Province", ViewData["Province"] as SelectList, new { style = "width:153px" })                        @Html.ValidationMessageFor(m => m.Province)                                                                         @Html.LabelFor(m => m.City)                                            @*@Html.TextBoxFor(m => m.City)*@                        @Html.DropDownList("City", ViewData["City"] as SelectList, new { style = "width:153px" })                        @Html.ValidationMessageFor(m => m.City)                                                                        @Html.LabelFor(m => m.County)                                            @*@Html.TextBoxFor(m => m.County)*@                                                @Html.DropDownList("County", ViewData["County"] as SelectList, new { style = "width:153px" })                        @Html.ValidationMessageFor(m => m.County)