json

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using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Data;using Newtonsoft.Json;using Newtonsoft.Json.Converters;using System.Text.RegularExpressions;namespace Tlw.zjxypj.Common{    public class DataTableConvertJson    {        #region ------DataTable转换成Json格式(方法转)------        /// <summary>          /// dataTable转换成Json格式          /// </summary>          /// <param name="dt"></param>          /// <returns></returns>          public static string DataTableToJson(DataTable dt)        {            StringBuilder jsonBuilder = new StringBuilder();            jsonBuilder.Append("{\"");            jsonBuilder.Append(dt.TableName);            jsonBuilder.Append("\":[");            jsonBuilder.Append("[");            for (int i = 0; i < dt.Rows.Count; i++)            {                jsonBuilder.Append("{");                for (int j = 0; j < dt.Columns.Count; j++)                {                    jsonBuilder.Append("\"");                    jsonBuilder.Append(dt.Columns[j].ColumnName);                    jsonBuilder.Append("\":\"");                    jsonBuilder.Append(dt.Rows[i][j].ToString());                    jsonBuilder.Append("\",");                }                jsonBuilder.Remove(jsonBuilder.Length - 1, 1);                jsonBuilder.Append("},");            }            jsonBuilder.Remove(jsonBuilder.Length - 1, 1);            jsonBuilder.Append("]");            jsonBuilder.Append("}");            return jsonBuilder.ToString();        }        #endregion ------DataTable转换成Json格式------        #region ------DataTable转换成Json格式(插件转)------        /// <summary>        /// DataTable转换成Json格式(插件转)        /// </summary>        /// <param name="_dt"></param>        /// <returns></returns>        public static string GetJsonByDataTable(DataTable _dt)        {            string result = "";            result = JsonConvert.SerializeObject(_dt, new DataTableConverter());            return result;        }        #endregion ------DataTable转换成Json格式------        #region ------DataSet转换成Json格式(方法转)------        /// <summary>          /// DataSet转换成Json格式(方法转)        /// </summary>          /// <param name="ds">DataSet</param>         /// <returns></returns>          public static string DatasetToJson(DataSet ds)        {            StringBuilder json = new StringBuilder();            foreach (DataTable dt in ds.Tables)            {                json.Append("{\"");                json.Append(dt.TableName);                json.Append("\":");                json.Append(DataTableToJson(dt));                json.Append("}");            } return json.ToString();        }        #endregion ------DataSet转换成Json格式------        /// <summary>        /// Msdn        /// </summary>        /// <param name="jsonName"></param>        /// <param name="dt"></param>        /// <returns></returns>        public static string DataTableToJson(string jsonName, DataTable dt)        {            StringBuilder Json = new StringBuilder();            Json.Append("{\"" + jsonName + "\":[");            if (dt.Rows.Count > 0)            {                for (int i = 0; i < dt.Rows.Count; i++)                {                    Json.Append("{");                    for (int j = 0; j < dt.Columns.Count; j++)                    {                        Json.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":\"" + dt.Rows[i][j].ToString() + "\"");                        if (j < dt.Columns.Count - 1)                        {                            Json.Append(",");                        }                    }                    Json.Append("}");                    if (i < dt.Rows.Count - 1)                    {                        Json.Append(",");                    }                }            }            Json.Append("]}");            return Json.ToString();        }        #region ------Jason转换成Datatable------        /// <summary>        /// 将json转换为DataTable        /// </summary>        /// <param name="strJson">得到的json</param>        /// <returns></returns>        public static DataTable JsonToDataTable(string strJson)        {            List<Dictionary<string, string>> ListRoot = JSonUtil.Deserialize<List<Dictionary<string, string>>>(strJson);            DataTable dt = new DataTable();            #region --解析Jason结果--            foreach (Dictionary<string, string> item in ListRoot)            {                DataRow dr = dt.NewRow();                foreach (KeyValuePair<string, string> it in item)                {                    if (!dt.Columns.Contains(it.Key))                    {                        var dc = new DataColumn();                        dc.ColumnName = it.Key;                        dt.Columns.Add(dc);                    }                    dr[it.Key] = it.Value;                }                dt.Rows.Add(dr);            }            #endregion ----            return dt;        }        #endregion ------------    }}
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