基于Bootstrap實現城市三級聯動

 <div class="form-group">
 <div class="col-sm-2 text-center">
 省
 </div>
 <div class="col-sm-2">
 <select class="form-control" name="Province" id="Province">
 <option>==請選擇===</option>
 </select>


 </div>
 <div class="col-sm-1 text-center">
 市
 </div>
 <div class="col-sm-2">
 <select class="form-control" name="City" id="City">
 <option>==請選擇===</option>
 </select>
 </div>
 <div class="col-sm-1 text-center">
 縣/區
 </div>
 <div class="col-sm-2">
 <select class="form-control" name="Village" id="Village">
 <option>==請選擇===</option>
 </select>
 </div>
 </div>

$(function () {


 //默認綁定省
 ProviceBind();
 //綁定事件
 $("#Province").change( function () {
 CityBind();
 })
 
 $("#City").change(function () {
 VillageBind();
 })
 
 


})
function Bind(str) {
 alert($("#Province").html());
 $("#Province").val(str);


}
function ProviceBind() {
 //清空下拉數據
 $("#Province").html("");



 var str = "<option>==請選擇===</option>";
 $.ajax({
 type: "POST",
 url: "/Home/GetAddress",
 data: { "parentiD": "", "MyColums": "Province" },
 dataType: "JSON",
 async: false,
 success: function (data) {
 //從服務器獲取數據進行綁定
 $.each(data.Data, function (i, item) {
 str += "<option value=" + item.Id + ">" + item.MyTexts + "</option>";
 })
 //將數據添加到省份這個下拉框里面
 $("#Province").append(str);
 },
 error: function () { alert("Error"); }
 });


 
 
}
function CityBind() {


 var provice = $("#Province").attr("value");
 //判斷省份這個下拉框選中的值是否為空
 if (provice == "") {
 return;
 }
 $("#City").html("");
 var str = "<option>==請選擇===</option>";


 $.ajax({
 type: "POST",
 url: "/Home/GetAddress",
 data: { "parentiD": provice, "MyColums": "City" },
 dataType: "JSON",
 async: false,
 success: function (data) {
 //從服務器獲取數據進行綁定
 $.each(data.Data, function (i, item) {
 str += "<option value=" + item.Id + ">" + item.MyTexts + "</option>";
 })
 //將數據添加到省份這個下拉框里面
 $("#City").append(str);
 },
 error: function () { alert("Error"); }
 });


}
function VillageBind() {


 var provice = $("#City").attr("value");
 //判斷市這個下拉框選中的值是否為空
 if (provice == "") {
 return;
 }
 $("#Village").html("");
 var str = "<option>==請選擇===</option>";
 //將市的ID拿到數據庫進行查詢，查詢出他的下級進行綁定
 $.ajax({
 type: "POST",
 url: "/Home/GetAddress",
 data: { "parentiD": provice, "MyColums": "Village" },
 dataType: "JSON",
 async: false,
 success: function (data) {
 //從服務器獲取數據進行綁定
 $.each(data.Data, function (i, item) {
 str += "<option value=" + item.Id + ">" + item.MyTexts + "</option>";
 })
 //將數據添加到省份這個下拉框里面
 $("#Village").append(str);
 },
 error: function () { alert("Error"); }
 });
 //$.post("/Home/GetAddress", { parentiD: provice, MyColums: "Village" }, function (data) { 
 // $.each(data.Data, function (i, item) {
 // str += "<option value=" + item.Id + ">" + item.MyTexts + "</option>";
 // })
 // $("#Village").append(str);
 //})
}

public ActionResult GetAddress(string parentiD, string MyColums)
 {
 ISysFieldBll sysfileBll = BLLFactory.DataAccess.GetBll<ISysFieldBll>();
 Result result = new Result();
 result.Data = sysfileBll.GetSysFieldParentId(parentiD,MyColums);
 return Json(result,JsonRequestBehavior.AllowGet);
 }

CREATE TABLE [dbo].[SysField](
[Id] [nvarchar](36) NOT NULL,
[MyTexts] [nvarchar](200) NOT NULL,
[ParentId] [nvarchar](36) NULL,
[MyTables] [nvarchar](200) NULL,
[MyColums] [nvarchar](200) NULL,
[Sort] [int] NULL,
[Remark] [nvarchar](4000) NULL,
[CreateTime] [datetime] NULL,
[CreatePerson] [nvarchar](200) NULL,
[UpdateTime] [datetime] NULL,
[UpdatePerson] [nvarchar](200) NULL,
)

 string sql = @"SELECT * FROM SysField WHERE 1=1 and MyTables='SysPerson'and MyColums=@MyColums and ParentId=@ParentId ";