JSONHelper

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JSONHelper Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->using System;using System.Collections.Generic;using System.Web;using System.Web.Script.Serialization;using System.Data;namespace Sheng.Common{    /// <summary>    /// JSON帮助类    /// </summary>    public class JSONHelper    {        /// <summary>        /// 对象转JSON        /// </summary>        /// <param name="obj">对象</param>        /// <returns>JSON格式的字符串</returns>        public static string ObjectToJSON(object obj)        {            JavaScriptSerializer jss = new JavaScriptSerializer();            try            {                return jss.Serialize(obj);            }            catch (Exception ex)            {                                throw new Exception("JSONHelper.ObjectToJSON(): " + ex.Message);            }        }        /// <summary>        /// 数据表转键值对集合        /// 把DataTable转成 List集合, 存每一行        /// 集合中放的是键值对字典,存每一列        /// </summary>        /// <param name="dt">数据表</param>        /// <returns>哈希表数组</returns>        public static List<Dictionary<string, object>> DataTableToList(DataTable dt)        {            List<Dictionary<string, object>> list                 = new List<Dictionary<string, object>>();            foreach (DataRow dr in dt.Rows)            {                Dictionary<string, object> dic = new Dictionary<string, object>();                foreach (DataColumn dc in dt.Columns)                {                    dic.Add(dc.ColumnName, dr[dc.ColumnName]);                }                list.Add(dic);            }            return list;        }        /// <summary>        /// 数据集转键值对数组字典        /// </summary>        /// <param name="dataSet">数据集</param>        /// <returns>键值对数组字典</returns>        public static Dictionary<string, List<Dictionary<string, object>>> DataSetToDic(DataSet ds)        {            Dictionary<string, List<Dictionary<string, object>>> result = new Dictionary<string, List<Dictionary<string, object>>>();            foreach (DataTable dt in ds.Tables)                result.Add(dt.TableName, DataTableToList(dt));            return result;        }        /// <summary>        /// 数据表转JSON        /// </summary>        /// <param name="dataTable">数据表</param>        /// <returns>JSON字符串</returns>        public static string DataTableToJSON(DataTable dt)        {            return ObjectToJSON(DataTableToList(dt));        }        /// <summary>        /// JSON文本转对象,泛型方法        /// </summary>        /// <typeparam name="T">类型</typeparam>        /// <param name="jsonText">JSON文本</param>        /// <returns>指定类型的对象</returns>        public static T JSONToObject<T>(string jsonText)        {            JavaScriptSerializer jss = new JavaScriptSerializer();            try            {                return jss.Deserialize<T>(jsonText);            }            catch (Exception ex)            {                throw new Exception("JSONHelper.JSONToObject(): " + ex.Message);            }        }        /// <summary>        /// 将JSON文本转换为数据表数据        /// </summary>        /// <param name="jsonText">JSON文本</param>        /// <returns>数据表字典</returns>        public static Dictionary<string, List<Dictionary<string, object>>> TablesDataFromJSON(string jsonText)        {            return JSONToObject<Dictionary<string, List<Dictionary<string, object>>>>(jsonText);        }        /// <summary>        /// 将JSON文本转换成数据行        /// </summary>        /// <param name="jsonText">JSON文本</param>        /// <returns>数据行的字典</returns>        public static Dictionary<string, object> DataRowFromJSON(string jsonText)        {            return JSONToObject<Dictionary<string, object>>(jsonText);        }    }}
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