写这个东西的初衷是来之于新浪微博，在新浪微博帐号设置里面有个地区的选项，使用js写的，想把它的代码给截获下来，可是失望的是它的js代码压缩了，不过看到的里面json类型格式设计的挺好的，一般我们后台未做任何处理的json数据格式类似以下这样子的
[{"Code":3231,"Name":"长春市"},
{"Code":3232,"Name":"吉林市}]
如果有一万个地区，会多出几万个字符，这么奢侈的做法我想我还是放弃了吧，
也是出于这种想法，就写了使用.NET输出此种格式的json，以及写了基于jquery联动的下拉。
主要代码如下：
json代码:
代码如下:
var area = '{"city3145":"市辖区",
"code3145":"3179",
"city3146":"市辖区",
"code3146":"3180",
"city3147":"石家庄市,唐山市,秦皇岛市,邯郸市,邢台市,保定市,张家口市,承德市,沧州市,廊坊市,衡水市",
"code3147":"3181,3182,3183,3184,3185,3186,3187,3188,3189,3190,3191",
"city3148":"太原市,大同市,阳泉市,长治市,晋城市,朔州市,晋中市,运城市,忻州市,临汾市,吕梁市",
"code3148":"3192,3193,3194,3195,3196,3197,3198,3199,3200,3201,3202",
"city3149":"呼和浩特市,包头市,乌海市,赤峰市,通辽市,鄂尔多斯市,呼伦贝尔市,巴彦淖尔市,乌兰察布市,兴安盟,锡林郭勒盟,阿拉善盟",
"code3149":"3203,3204,3205,3206,3207,3208,3209,3210,3211,3212,3213,3214",
"city3150":"沈阳市,大连市,鞍山市,抚顺市,本溪市,丹东市,锦州市,营口市,阜新市,辽阳市,盘锦市,铁岭市,朝阳市,葫芦岛市",
"code3150":"3215,3216,3217,3218,3219,3220,3221,3222,3223,3224,3225,3226,3227,3228",
"city3151":"长春市,吉林市,四平市,辽源市,通化市,白山市,松原市,白城市,延边朝鲜族自治州",
"code3151":"3229,3230,3231,3232,3233,3234,3235,3236,3237",
"city3152":"哈尔滨市,齐齐哈尔市,鸡西市,鹤岗市,双鸭山市,大庆市,伊春市,佳木斯市,七台河市,牡丹江市,黑河市,绥化市,大兴安岭地区",
"code3152":"3238,3239,3240,3241,3242,3243,3244,3245,3246,3247,3248,3249,3250",
"city3153":"市辖区", "code3153":"3251",
"city3154":"南京市,无锡市,徐州市,常州市,苏州市,南通市,连云港市,淮安市,盐城市,扬州市,镇江市,泰州市,宿迁市",
"code3154":"3252,3253,3254,3255,3256,3257,3258,3259,3260,3261,3262,3263,3264",
"city3155":"杭州市,宁波市,温州市,嘉兴市,湖州市,绍兴市,金华市,衢州市,舟山市,台州市,丽水市",
"code3155":"3265,3266,3267,3268,3269,3270,3271,3272,3273,3274,3275",
"city3156":"合肥市,芜湖市,蚌埠市,淮南市,马鞍山市,淮北市,铜陵市,安庆市,黄山市,滁州市,阜阳市,宿州市,巢湖市,六安市,亳州市,池州市,宣城市",
"code3156":"3276,3277,3278,3279,3280,3281,3282,3283,3284,3285,3286,3287,3288,3289,3290,3291,3292",
"city3157":"福州市,厦门市,莆田市,三明市,泉州市,漳州市,南平市,龙岩市,宁德市",
"code3157":"3293,3294,3295,3296,3297,3298,3299,3300,3301",
