using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Script.Serialization;
using System.Data;
/// <summary>
/// JSON幫助類
/// </summary>
publicclassJSONHelper
{
/// <summary>
/// 對象轉JSON
/// </summary>
/// <param name="obj">對象</param>
/// <returns>JSON格式的字符串</returns>
publicstaticstringObjectToJSON(object obj)
{
JavaScriptSerializer jss =newJavaScriptSerializer();
try
{
return jss.Serialize(obj);
}
catch(Exception ex)
{
thrownewException("JSONHelper.ObjectToJSON(): "+ ex.Message);
}
}
/// <summary>
/// 數據錶轉鍵值對集合 www.2cto.com
/// 把DataTable轉成 List集合, 存每一行
/// 集合中放的是鍵值對字典,存每一列
/// </summary>
/// <param name="dt">數據表</param>
/// <returns>哈希表數組</returns>
publicstaticList<Dictionary<string,object>>DataTableToList(DataTable dt)
{
List<Dictionary<string,object>> list
=newList<Dictionary<string,object>>();
foreach(DataRow dr in dt.Rows)
{
Dictionary<string,object> dic =newDictionary<string,object>();
foreach(DataColumn dc in dt.Columns)
{
dic.Add(dc.ColumnName, dr[dc.ColumnName]);
}
list.Add(dic);
}
return list;
}
/// <summary>
/// 數據集轉鍵值對數組字典
/// </summary>
/// <param name="dataSet">數據集</param>
/// <returns>鍵值對數組字典</returns>
publicstaticDictionary<string,List<Dictionary<string,object>>>DataSetToDic(DataSet ds)
{
Dictionary<string,List<Dictionary<string,object>>> result =newDictionary<string,List<Dictionary<string,object>>>();
foreach(DataTable dt in ds.Tables)
result.Add(dt.TableName,DataTableToList(dt));
return result;
}
/// <summary>
/// 數據錶轉JSON
/// </summary>
/// <param name="dataTable">數據表</param>
/// <returns>JSON字符串</returns>
publicstaticstringDataTableToJSON(DataTable dt)
{
returnObjectToJSON(DataTableToList(dt));
}
/// <summary>
/// JSON文本轉對象,泛型方法
/// </summary>
/// <typeparam name="T">類型</typeparam>
/// <param name="jsonText">JSON文本</param>
/// <returns>指定類型的對象</returns>
publicstatic T JSONToObject<T>(string jsonText)
{
JavaScriptSerializer jss =newJavaScriptSerializer();
try
{
return jss.Deserialize<T>(jsonText);
}
catch(Exception ex)
{
thrownewException("JSONHelper.JSONToObject(): "+ ex.Message);
}
}
/// <summary>
/// 將JSON文本轉換爲數據表數據
/// </summary>
/// <param name="jsonText">JSON文本</param>
/// <returns>數據表字典</returns>
publicstaticDictionary<string,List<Dictionary<string,object>>>TablesDataFromJSON(string jsonText)
{
returnJSONToObject<Dictionary<string,List<Dictionary<string,object>>>>(jsonText);
}
/// <summary>
/// 將JSON文本轉換成數據行
/// </summary>
/// <param name="jsonText">JSON文本</param>
/// <returns>數據行的字典</returns>
publicstaticDictionary<string,object>DataRowFromJSON(string jsonText)
{
returnJSONToObject<Dictionary<string,object>>(jsonText);
}
}
C# JSONHelper之Json轉換方法大全
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