AJAX+省市县联动+无刷新+C#源码

use pubs go CREATE TABLE ProvinceCityArea ( [MenuID] [int] IDENTITY (1, 1) NOT NULL , [MenuName] [varchar] (20) COLLATE Chinese_PRC_CI_AS NULL , [ParentID] [int] NULL , CONSTRAINT [PK_ProvinceCityArea] PRIMARY KEY CLUSTERED ( [MenuID] ) ON [PRIMARY] ) ON [PRIMARY] GO insert into ProvinceCityArea values('湖南',0) insert into ProvinceCityArea values('湖北',0) insert into ProvinceCityArea values('长沙',1) insert into ProvinceCityArea values('株洲',1) insert into ProvinceCityArea values('湘潭',1) insert into ProvinceCityArea values('张家界',1) insert into ProvinceCityArea values('武汉',2) insert into ProvinceCityArea values('武昌',2) insert into ProvinceCityArea values('汉阳',2) insert into ProvinceCityArea values('麻城',2) insert into ProvinceCityArea values('长沙县',3) insert into ProvinceCityArea values('望城县',3) insert into ProvinceCityArea values('浏阳县',3) insert into ProvinceCityArea values('宁乡县',3) insert into ProvinceCityArea values('株洲县',4) insert into ProvinceCityArea values('攸县',4) insert into ProvinceCityArea values('醴陵',4) insert into ProvinceCityArea values('茶陵',4) insert into ProvinceCityArea values('炎陵',4) insert into ProvinceCityArea values('湘乡县',5) insert into ProvinceCityArea values('湘潭县',5) insert into ProvinceCityArea values('韶山县',5) insert into ProvinceCityArea values('慈利区',6) insert into ProvinceCityArea values('桑植区',6) insert into ProvinceCityArea values('永定区',6) insert into ProvinceCityArea values('武陵源',6)