1 $(document).ready(function () {
2 $("#Province").append("<option value=‘‘>" + "--请选择--" + "</option>");
3 $("#City").append("<option value=‘‘>" + "--请选择--" + "</option>");
4 $("#District").append("<option value=‘‘>" + "--请选择--" + "</option>");
5 $.ajax({
6 url: "Handler1.ashx?type=0", //路径 地址
7 type: "get", //类型，post\get
8 dataType: "json", //json数据
9 success: function (msg) {//返回结果
10 for (var i = 0; i < msg.length; i++) {
11 $("#Province").append("<option value=‘" + msg[i].ProvinceID + "‘>" + msg[i].ProvinceName + "</option>");
12 }
13 }
14 });
15 //市
16 $("#Province").change(function () {
17 $("#City").empty(); //清空数据
18 $("#District").empty(); //清空数据
19 $("#District").append("<option value=‘‘>" + "--请选择--" + "</option>");
20 var ProvinceID = $(this).val();
21
22 $.ajax({
23 url: "Handler1.ashx?type=1",
24 type: "get", //类型
25 data: {
26 ProvinceID: ProvinceID
27 },
28 dataType: "json", //json数据
29 success: function (msg) {
30 for (var i = 0; i < msg.length; i++) { $("#City").append("<option value=‘" + msg[i].CityID + "‘>" + msg[i].CityName + "</option>"); }
31 }
32 });
33 });
34
35 //区
36 $("#City").change(function () {
37 $("#District").empty(); //清空数据
38 var CityID = $(this).val();
39 $.ajax({
40 url: "Handler1.ashx?type=2",
41 type: "get", //类型
42 data: {
43 CityID: CityID
44 },
45 dataType: "json", //json数据
46 success: function (msg) {
47 for (var i = 0; i < msg.length; i++) { $("#District").append("<option value=‘" + msg[i].DistrictID + "‘>" + msg[i].DistrictName + "</option>"); }
48 }
49 });
50
51 });
52 });
53
54 <select id="Province"></select>
55 <select id="City"></select>
56 <select id="District" ></select>
57
结合ajax（一般处理程序）
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Web;
5 using System.Data;
6 using System.Web.Script.Serialization;
7
8 namespace GovSystem.Company
9 {
10 /// <summary>
11 /// Handler1 的摘要说明
12 /// </summary>
13 public class Handler1 : IHttpHandler
14 {
15
16 public string text;
17 public void ProcessRequest(HttpContext context)
18 {
19 int action = Convert.ToInt32(context.Request.QueryString["type"]);
20 switch (action)
21 {
22 case (int)GetType.省:
23 text = Sel_Province(context);
24 break;
25 case (int) GetType.市:
26 text=Sel_City(context);
27 break;
28 case (int)GetType.区:
29 text = Sel_District(context);
30 break;
31 }
32 context.Response.ContentType = "text/plain";
33 context.Response.Write(text);
34 }
35 //省
36 private string Sel_Province(HttpContext context)
37 {
38 XieKe.BLL.S_Province b_Province = new XieKe.BLL.S_Province();
39 DataTable dt=b_Province.GetList("").Tables[0];
40 List<XieKe.Model.S_Province> listInfo = new List<XieKe.Model.S_Province>();
41 for (int i = 0; i < dt.Rows.Count; i++)
42 {
43 XieKe.Model.S_Province m_Province = new XieKe.Model.S_Province { ProvinceID = long.Parse(dt.Rows[i]["ProvinceID"].ToString()), DateCreated = Convert.ToDateTime(dt.Rows[i]["DateCreated"]), DateUpdated = Convert.ToDateTime(dt.Rows[i]["DateUpdated"]), ProvinceName = dt.Rows[i]["ProvinceName"].ToString() };
44 listInfo.Add(m_Province);
45 }
46 JavaScriptSerializer jssp = new JavaScriptSerializer();
47 string s= jssp.Serialize(listInfo);
48 return s;
49 }
50 //市
51 private string Sel_City(HttpContext context)
52 {
53 string ProvinceID = context.Request.QueryString["ProvinceID"];
54 XieKe.BLL.S_City b_City = new XieKe.BLL.S_City();
55
56 DataTable dt = b_City.GetList("ProvinceID="+ProvinceID).Tables[0];
57 List<XieKe.Model.S_City> listInfo = new List<XieKe.Model.S_City>();
58 for (int i = 0; i < dt.Rows.Count; i++)
59 {
60 XieKe.Model.S_City m_City = new XieKe.Model.S_City { CityID = long.Parse(dt.Rows[i]["CityID"].ToString()), CityName = dt.Rows[i]["CityName"].ToString(), DateCreated = Convert.ToDateTime(dt.Rows[i]["DateCreated"]), DateUpdated = Convert.ToDateTime(dt.Rows[i]["DateUpdated"]), ProvinceID = long.Parse(dt.Rows[i]["ProvinceID"].ToString()), ZipCode = dt.Rows[i]["ZipCode"].ToString() };
61 listInfo.Add(m_City);
62 }
63 JavaScriptSerializer jssp = new JavaScriptSerializer();
64 return jssp.Serialize(listInfo);
65 }
66 //区
67 private string Sel_District(HttpContext context)
68 {
69 string CityID = context.Request.QueryString["CityID"];
70 XieKe.BLL.S_District b_City = new XieKe.BLL.S_District();
71 DataTable dt = b_City.GetList("CityID=" + CityID).Tables[0];
72 List<XieKe.Model.S_District> listInfo = new List<XieKe.Model.S_District>();
73 for (int i = 0; i < dt.Rows.Count; i++)
74 {
75 XieKe.Model.S_District m_District = new XieKe.Model.S_District { CityID = Convert.ToInt32(dt.Rows[i]["CityID"]), DistrictName = dt.Rows[i]["DistrictName"].ToString() };
76 listInfo.Add(m_District);
77 }
78 JavaScriptSerializer jssp = new JavaScriptSerializer();
79 return jssp.Serialize(listInfo);
80 }
81 public bool IsReusable
82 {
83 get
84 {
85 return false;
86 }
87 }
88 public enum GetType
89 {
90 省 = 0,
91 市 = 1,
92 区 = 2,
93 };
94 }
95
96 }
时间： 2024-11-05 13:04:12