C# JSONHelper之Json转换方法大全

来源：互联网发布：raysource软件下载编辑：程序博客网时间：2024/05/21 17:20
using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Script.Serialization;using System.Data;/// <summary> /// JSON帮助类 /// </summary> publicclassJSONHelper{    /// <summary>     /// 对象转JSON     /// </summary>     /// <param name="obj">对象</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>     /// 数据表转键值对集合 www.2cto.com      /// 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>     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>     /// 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>     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>     /// 数据表转JSON     /// </summary>     /// <param name="dataTable">数据表</param>     /// <returns>JSON字符串</returns>     publicstaticstringDataTableToJSON(DataTable dt)    {        returnObjectToJSON(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>     publicstatic T JSONToObject<T>(string jsonText)    {        JavaScriptSerializer jss =newJavaScriptSerializer();        try        {            return jss.Deserialize<T>(jsonText);        }        catch(Exception ex)        {            thrownewException("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>     publicstaticDictionary<string,List<Dictionary<string,object>>>TablesDataFromJSON(string jsonText)    {        returnJSONToObject<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>     publicstaticDictionary<string,object>DataRowFromJSON(string jsonText)    {        returnJSONToObject<Dictionary<string,object>>(jsonText);    }}
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