递归循环JSON
2024-08-24 02:23:12
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web; /// <summary>
/// JsonHelper 的摘要说明
/// </summary>
public class JsonHelper
{
/// <summary>
/// 转换JSON对象
/// </summary>
/// <param name="company"></param>
/// <returns></returns>
public static string ConvertToJson(Company company)
{
string json = "CompanyName:\"" + company.CompanyName + "\",ContactName:\"" + company.ContactName + "\",City:\"" + company.City + "\",CustomerID:\"" + company.CustomerID + "\",children:{0}";
return json;
} /// <summary>
/// 转换JSON对象集合，包含子集，递归加载
/// </summary>
/// <param name="companyList"></param>
/// <returns></returns>
public static string ConvertToJson(List<Company> companyList)
{
string json = "[";
//获取第一级目录
List<Company> rootList = companyList.Where(x => string.IsNullOrEmpty(x.Pid)).ToList<Company>();
foreach (Company root in rootList)
{
string js = ConvertToJson(root);
string children="";
children = DiGui(companyList, children, root.CustomerID);
json += "{"+string.Format(js, children) + "},";
}
if (json.LastIndexOf(",") < 1)
{
json += "]";
}
else
{
json = json.Substring(0, json.Length - 1) + "]";
}
return json.Replace(",children:[]", "");
} /// <summary>
/// 递归调用添加包含子集的JSON数组
/// </summary>
private static string DiGui(List<Company> companyList,string children,string pid)
{
children = "[";
List<Company> childerList = companyList.Where(x => x.Pid.ToUpper() == pid.ToUpper()).ToList<Company>();
foreach (Company item in childerList)
{
string js = ConvertToJson(item);
string cd = "";
cd = DiGui(companyList, cd, item.CustomerID);
children += "{"+string.Format(js, cd) + "},";
}
if (children.LastIndexOf(",") < 1)
{
children += "]";
}
else
{
children = children.Substring(0, children.Length - 1) + "]";
}
return children;
} }
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