Ajaxpro 三级联动
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="BoroughAdd.aspx.cs" Inherits="System_Borough_BoroughAdd" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题页</title><script language="javascript" type="text/javascript">
// ACLOUD 常用JS函数
function getBid(s){
return document.getElementById(s);
}
function getBmc(s){
return document.getElementByName(s);
}
//显示分类列表
function showNext(sid,obj)//选上一个的时候，给下一个控件赋值
{
if(sid==null || sid=="" || sid.length<1)return;//如果当前下拉框的值为空 返回
var slt =getBid(obj);//获得下一个控件对象
var v = System_Borough_BoroughAdd.getNextClass(sid).value; // 获得下一个类的数据源
// alert(v.Tables[0].Rows[i].txt);
//return;
if (v != null)
{
if(v != null && typeof(v) == "object" && v.Tables != null)
{
slt.length = 0;//初始化下级控件
slt.options.add(new Option("请选择",0));//添加一行
//加了个“请选择”主要为了触发onchange事件
//如果选第一个的时候第三个默认为 请选择
if(obj=="ddl2")
{
getBid("ddl3").options.length=0;
getBid("ddl3").options.add(new Option("请选择",0));
}
for(var i=0; i<v.Tables[0].Rows.length; i++)
{
var txt = v.Tables[0].Rows[i].City_Name; //这个地方需要注意区分大小写
var vol = v.Tables[0].Rows[i].City_PID; //跟dataset表的列名称要一致
slt.options.add(new Option(txt,vol));
}
}
}
return;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<table width="500" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td width="99"> </td>
<td width="401">
省<asp:DropDownList ID="ddl1" runat="server">
</asp:DropDownList>
市<asp:DropDownList ID="ddl2" runat="server">
</asp:DropDownList>
区域<asp:DropDownList ID="ddl3" runat="server">
</asp:DropDownList></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
</table>
</div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using HouseCust.FK.Common;
using HouseCust.FK.Model;
using HouseCust.FK.BLL;
public partial class System_Borough_BoroughAdd : System.Web.UI.Page
{
BLL_FK_Sys_CityErea BllErea = new BLL_FK_Sys_CityErea();
protected void Page_Load(object sender, EventArgs e)
{
AjaxPro.Utility.RegisterTypeForAjax(typeof(System_Borough_BoroughAdd));
if (!IsPostBack)
{
BindDc();
}
}
[AjaxPro.AjaxMethod]
public DataSet getNextClass(string cid)
{
try
{
return BllErea.GetList(int.Parse(cid));
}
catch
{
return null;
}
}
private void BindDc()
{
//第一个
ddl1.DataSource = BllErea.GetList(0).Tables[0].DefaultView;
ddl1.DataTextField = "City_Name";
ddl1.DataValueField = "City_PID";
ddl1.DataBind();
if (ddl1.DataSource != null)
{
ddl1.Attributes.Add("onchange", "showNext(this.options[selectedIndex].value,'ddl2');");
}
//可以先判断 DropDownList.SelectedItem.Value
//第二个
ddl2.DataSource = BllErea.GetList(int.Parse(ddl1.SelectedItem.Value)).Tables[0].DefaultView;
ddl2.DataTextField = "City_Name";
ddl2.DataValueField = "City_PID";
ddl2.DataBind();
//第三个
if (ddl2.DataSource != null)
{
ddl2.Attributes.Add("onchange", "showNext(this.options[selectedIndex].value,'ddl3');");
}
ddl3.DataSource = BllErea.GetList(int.Parse(ddl2.SelectedItem.Value)).Tables[0].DefaultView;
ddl3.DataTextField = "City_Name";
ddl3.DataValueField = "City_PID";
ddl3.DataBind();
}
}
create table FK_Sys_CityErea
(
City_ID int identity(1,1) primary key, --自增ID
City_PID int null, --区域父类ID
City_CID int null, --区域子类ID
City_Name nvarchar(50) null, --区域名称
City_SName nvarchar(10) null, --区域简称
Add_Time datetime default getdate() --添加时间
)
CREATE PROCEDURE Sp_Dic_GetListByDic_CID
@Dic_CID int
AS
SELECT
Dic_ID,Dic_PID,Dic_Name
FROM FK_Sys_Dic
WHERE Dic_CID=@Dic_CID
GO
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd
<html xmlns="http://www.w3.org/1999/xhtml
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题页</title><script language="javascript" type="text/javascript">
// ACLOUD 常用JS函数
function getBid(s){
return document.getElementById(s);
}
function getBmc(s){
return document.getElementByName(s);
}
//显示分类列表
function showNext(sid,obj)//选上一个的时候，给下一个控件赋值
{
if(sid==null || sid=="" || sid.length<1)return;//如果当前下拉框的值为空 返回
var slt =getBid(obj);//获得下一个控件对象
var v = System_Borough_BoroughAdd.getNextClass(sid).value; // 获得下一个类的数据源
// alert(v.Tables[0].Rows[i].txt);
//return;
if (v != null)
{
if(v != null && typeof(v) == "object" && v.Tables != null)
{
slt.length = 0;//初始化下级控件
slt.options.add(new Option("请选择",0));//添加一行
//加了个“请选择”主要为了触发onchange事件
//如果选第一个的时候第三个默认为 请选择
if(obj=="ddl2")
{
getBid("ddl3").options.length=0;
getBid("ddl3").options.add(new Option("请选择",0));
}
for(var i=0; i<v.Tables[0].Rows.length; i++)
{
var txt = v.Tables[0].Rows[i].City_Name; //这个地方需要注意区分大小写
var vol = v.Tables[0].Rows[i].City_PID; //跟dataset表的列名称要一致
slt.options.add(new Option(txt,vol));
}
}
}
return;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<table width="500" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td width="99"> </td>
<td width="401">
省<asp:DropDownList ID="ddl1" runat="server">
</asp:DropDownList>
市<asp:DropDownList ID="ddl2" runat="server">
</asp:DropDownList>
区域<asp:DropDownList ID="ddl3" runat="server">
</asp:DropDownList></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
</table>
</div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using HouseCust.FK.Common;
using HouseCust.FK.Model;
using HouseCust.FK.BLL;
public partial class System_Borough_BoroughAdd : System.Web.UI.Page
{
BLL_FK_Sys_CityErea BllErea = new BLL_FK_Sys_CityErea();
protected void Page_Load(object sender, EventArgs e)
{
AjaxPro.Utility.RegisterTypeForAjax(typeof(System_Borough_BoroughAdd));
if (!IsPostBack)
{
BindDc();
}
}
[AjaxPro.AjaxMethod]
public DataSet getNextClass(string cid)
{
try
{
return BllErea.GetList(int.Parse(cid));
}
catch
{
return null;
}
}
private void BindDc()
{
//第一个
ddl1.DataSource = BllErea.GetList(0).Tables[0].DefaultView;
ddl1.DataTextField = "City_Name";
ddl1.DataValueField = "City_PID";
ddl1.DataBind();
if (ddl1.DataSource != null)
{
ddl1.Attributes.Add("onchange", "showNext(this.options[selectedIndex].value,'ddl2');");
}
//可以先判断 DropDownList.SelectedItem.Value
//第二个
ddl2.DataSource = BllErea.GetList(int.Parse(ddl1.SelectedItem.Value)).Tables[0].DefaultView;
ddl2.DataTextField = "City_Name";
ddl2.DataValueField = "City_PID";
ddl2.DataBind();
//第三个
if (ddl2.DataSource != null)
{
ddl2.Attributes.Add("onchange", "showNext(this.options[selectedIndex].value,'ddl3');");
}
ddl3.DataSource = BllErea.GetList(int.Parse(ddl2.SelectedItem.Value)).Tables[0].DefaultView;
ddl3.DataTextField = "City_Name";
ddl3.DataValueField = "City_PID";
ddl3.DataBind();
}
}
create table FK_Sys_CityErea
(
City_ID int identity(1,1) primary key, --自增ID
City_PID int null, --区域父类ID
City_CID int null, --区域子类ID
City_Name nvarchar(50) null, --区域名称
City_SName nvarchar(10) null, --区域简称
Add_Time datetime default getdate() --添加时间
)
CREATE PROCEDURE Sp_Dic_GetListByDic_CID
@Dic_CID int
AS
SELECT
Dic_ID,Dic_PID,Dic_Name
FROM FK_Sys_Dic
WHERE Dic_CID=@Dic_CID
GO
