Html.DropDownList

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;

<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>