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
/// <summary>
/// 过滤特殊字符
/// </summary>
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
/// <summary>
/// List转换成Json
/// </summary>
public static string ListToJson<t>(IList<t> list)
{
object obj = list[0];
return ListToJson<t>(list, obj.GetType().Name);
}
/// <summary>
/// List转换成Json
/// </summary>
public static string ListToJson<t>(IList<t> 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
///
/// <param>对象
/// <returns>Json字符串</returns>
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
///
/// <param>集合对象
/// <returns>Json字符串</returns>
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
/// <summary>
/// 普通集合转换Json
/// </summary>
/// <param>集合对象
/// <returns>Json字符串</returns>
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
/// <summary>
/// DataSet转换为Json
/// </summary>
/// <param>DataSet对象
/// <returns>Json字符串</returns>
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
/// <summary>
/// Datatable转换为Json
/// </summary>
/// <param>Datatable对象
/// <returns>Json字符串</returns>
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
///
/// <param>DataReader对象
/// <returns>Json字符串</returns>
public static string ToJson(DbDataReader dataReader)
{
StringBuilder jsonString = new StringBuilder();
jsonString.Append("[");
while (dataReader.Read())
{
jsonString.Append("{");
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