根据车籍地(车牌号码前2位)获取地区代码(城市)
json文件CityInfo.json 内容如下
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对象如下(对象的属性名需要和json中的对象名一致):
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Model
{
public class CityInfo
{
/// <summary>
/// 车牌前两位
/// </summary>
public string Hp { get; set; }
/// <summary>
/// 城市
/// </summary>
public string City { get; set; }
/// <summary>
/// 省份
/// </summary>
public string Province { get; set; }
/// <summary>
/// 拼音缩写
/// </summary>
public string Pcode { get; set; }
/// <summary>
/// 地区代码
/// </summary>
public string AreaCode { get; set; }
}
}
获取方法:
/// <summary>
/// 根据号牌获取车籍地所在的地区代码
/// </summary>
/// <param name="Num">号牌号码</param>
/// <returns></returns>
public string GetAreaCodeByNum(string Num)
{
string hp = Num.Substring(0, 2);//号牌前2位,例如陕A
string areaCode = "";//区域代码
using (StreamReader file = File.OpenText("CityInfo.json"))
{
using (JsonTextReader reader = new JsonTextReader(file))
{
JObject jsonobject = (JObject)JToken.ReadFrom(reader);
string jCodeInfoList = jsonobject["CodeInfo"].ToString();
var cityList = Newtonsoft.Json.Linq.JArray.Parse(jCodeInfoList);
List<CityInfo> codeInfoList = cityList.ToObject<List<CityInfo>>();
foreach (var codeInfo in codeInfoList)
{
if (hp.Contains(codeInfo.Hp))
{
areaCode = codeInfo.AreaCode;
break;
}
}
return areaCode;
}
}
}