asp.net JSONHelper JSON help class

/************************************************** 
*  All rights reserved : Mr_Sheng 
*  wen   a   The name : JSONHelper.cs 
*  The file : 
*  Type specification : JSONHelper JSON Helper classes  
*  Authorization statement : 
*  This program is free software;  
*  According to the free software foundation GPL v3 License terms, this program is reissued and / Or modification;  
*  This procedure is issued for the purpose of use without any warranty;  
*  There is also no implied warranty of merchantability or fitness for a particular purpose.  
*  Please refer to GNU General public authorization  v3 (see license.txt File).  
*  Version history : 
* v2.0.0 Mr_Sheng 2009-09-09  Modify the  
***************************************************/ 
using System; 
using System.Collections.Generic; 
using System.Web; 
using System.Web.Script.Serialization; 
using System.Data; 
namespace Sheng.Common 
{ 
/// <summary> 
/// JSON Helper classes  
/// </summary> 
public class JSONHelper 
{ 
/// <summary> 
///  Object to turn JSON 
/// </summary> 
/// <param name="obj"> object </param> 
/// <returns>JSON Formatted string </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> 
///  Data table turns the collection of key-value pairs  
///  the DataTable into  List A collection of ,  To save every 1 line  
///  Set is the dictionary of key-value pairs , To save every 1 column  
/// </summary> 
/// <param name="dt"> The data table </param> 
/// <returns> Hash table array </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> 
///  Data set to array dictionary  
/// </summary> 
/// <param name="dataSet"> The data set </param> 
/// <returns> Key-value pair array dictionary </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> 
///  Turn the data table JSON 
/// </summary> 
/// <param name="dataTable"> The data table </param> 
/// <returns>JSON string </returns> 
public static string DataTableToJSON(DataTable dt) 
{ 
return ObjectToJSON(DataTableToList(dt)); 
} 
/// <summary> 
/// JSON Text to object , Generic method  
/// </summary> 
/// <typeparam name="T"> type </typeparam> 
/// <param name="jsonText">JSON The text </param> 
/// <returns> Object of the specified type </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> 
///  will JSON Text is converted to data table data  
/// </summary> 
/// <param name="jsonText">JSON The text </param> 
/// <returns> Data table dictionary </returns> 
public static Dictionary<string, List<Dictionary<string, object>>> TablesDataFromJSON(string jsonText) 
{ 
return JSONToObject<Dictionary<string, List<Dictionary<string, object>>>>(jsonText); 
} 
/// <summary> 
///  will JSON Text is converted into data rows  
/// </summary> 
/// <param name="jsonText">JSON The text </param> 
/// <returns> Data row dictionary </returns> 
public static Dictionary<string, object> DataRowFromJSON(string jsonText) 
{ 
return JSONToObject<Dictionary<string, object>>(jsonText); 
} 
} 
} 

The System.Web.Script.Serialization namespace is a new addition to.Net 3.5.
If you want to used in the following version 3.5, 3.5 can be downloaded in System. Web. Extensions. dll into their own applications.