Html.DropDownList

后台

 List<SelectListItem> Countyitems = new List<SelectListItem>()
            {
                //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<SelectListItem> Cityitems = new List<SelectListItem>()
            {
                //new SelectListItem(){Text="--请选择--", Value="",Selected = false},
                new SelectListItem(){Text="钦州市", Value="0",Selected = true}

            };

            List<SelectListItem> Provinceitems = new List<SelectListItem>()
            {
                //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

<tr>
                    <td>@Html.LabelFor(m => m.Province)</td>
                    <td>
                        @Html.DropDownList("Province", ViewData["Province"] as SelectList, new { style = "width:153px" })
                        @Html.ValidationMessageFor(m => m.Province)
                    </td>
                </tr>

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

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