C#自定义将各种对象转换成JSON格式的类

这个C#封装类可以用于将各种格式的数据转换成JSON格式，包括List转换成Json，普通集合转换Json ，DataSet转换为Json ，Datatable转换为Json ，DataReader转换为Json等，如果你需要将对象转换成JSON，可以使用这个类。

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Reflection;
using System.Collections;
using System.Data.Common;
  
namespace DotNet.Utilities
{
    //JSON转换类
    public class ConvertJson
    {
        #region 私有方法
        /// 

        /// 过滤特殊字符
        /// 
        private static string String2Json(String s)
        {
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i 
        /// 格式化字符型、日期型、布尔型
        /// 
        private static string StringFormat(string str, Type type)
        {
            if (type == typeof(string))
            {
                str = String2Json(str);
                str = "\"" + str + "\"";
            }
            else if (type == typeof(DateTime))
            {
                str = "\"" + str + "\"";
            }
            else if (type == typeof(bool))
            {
                str = str.ToLower();
            }
            else if (type != typeof(string) && string.IsNullOrEmpty(str))
            {
                str = "\"" + str + "\"";
            }
            return str;
        }
        #endregion
  
        #region List转换成Json
        /// 

        /// List转换成Json
        /// 
        public static string ListToJson(IList list)
        {
            object obj = list[0];
            return ListToJson(list, obj.GetType().Name);
        }
  
        /// 

        /// List转换成Json
        /// 
        public static string ListToJson(IList list, string jsonName)
        {
            StringBuilder Json = new StringBuilder();
            if (string.IsNullOrEmpty(jsonName)) jsonName = list[0].GetType().Name;
            Json.Append("{\"" + jsonName + "\":[");
            if (list.Count > 0)
            {
                for (int i = 0; i ();
                    PropertyInfo[] pi = obj.GetType().GetProperties();
                    Json.Append("{");
                    for (int j = 0; j 
        /// 对象转换为Json
        /// 
        /// 对象
        /// Json字符串
        public static string ToJson(object jsonObject)
        {
            string jsonString = "{";
            PropertyInfo[] propertyInfo = jsonObject.GetType().GetProperties();
            for (int i = 0; i 
        /// 对象集合转换Json
        /// 
        /// 集合对象
        /// Json字符串
        public static string ToJson(IEnumerable array)
        {
            string jsonString = "[";
            foreach (object item in array)
            {
                jsonString += ToJson(item) + ",";
            }
            jsonString.Remove(jsonString.Length - 1, jsonString.Length);
            return jsonString + "]";
        }
        #endregion
  
        #region 普通集合转换Json
        /// 

        /// 普通集合转换Json
        /// 
        /// 集合对象
        /// Json字符串
        public static string ToArrayString(IEnumerable array)
        {
            string jsonString = "[";
            foreach (object item in array)
            {
                jsonString = ToJson(item.ToString()) + ",";
            }
            jsonString.Remove(jsonString.Length - 1, jsonString.Length);
            return jsonString + "]";
        }
        #endregion
  
        #region  DataSet转换为Json
        /// 

        /// DataSet转换为Json
        /// 
        /// DataSet对象
        /// Json字符串
        public static string ToJson(DataSet dataSet)
        {
            string jsonString = "{";
            foreach (DataTable table in dataSet.Tables)
            {
                jsonString += "\"" + table.TableName + "\":" + ToJson(table) + ",";
            }
            jsonString = jsonString.TrimEnd(',');
            return jsonString + "}";
        }
        #endregion
  
        #region Datatable转换为Json
        /// 

        /// Datatable转换为Json
        /// 
        /// Datatable对象
        /// Json字符串
        public static string ToJson(DataTable dt)
        {
            StringBuilder jsonString = new StringBuilder();
            jsonString.Append("[");
            DataRowCollection drc = dt.Rows;
            for (int i = 0; i 
        /// DataTable转换为Json
        /// 
        public static string ToJson(DataTable dt, string jsonName)
        {
            StringBuilder Json = new StringBuilder();
            if (string.IsNullOrEmpty(jsonName)) jsonName = dt.TableName;
            Json.Append("{\"" + jsonName + "\":[");
            if (dt.Rows.Count > 0)
            {
                for (int i = 0; i 
        /// DataReader转换为Json
        /// 
        /// DataReader对象
        /// Json字符串
        public static string ToJson(DbDataReader dataReader)
        {
            StringBuilder jsonString = new StringBuilder();
            jsonString.Append("[");
            while (dataReader.Read())
            {
                jsonString.Append("{");
                for (int i = 0; i