using Newtonsoft.Json;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Text;
using System.Web.Script.Serialization;
using System.Xml;
using System.Xml.Serialization;

namespace CnasSynchronousCommon
{
    public class TransConvert
    {
        /// <summary>
        /// datatable传Json
        /// </summary>
        /// <param name="dt"></param>
        /// <returns></returns>
        // public static string DataTableToJSON(DataTable dt)
        //{
        //       StringBuilder jsonBuilder = new StringBuilder();
        //       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("]");
        //      return jsonBuilder.ToString();
        // }

        #region DataTable与JSON的转换
        public static string DataTableToJSON(DataTable dt)
        {
            return Newtonsoft.Json.JsonConvert.SerializeObject(dt);
        }
        public static DataTable JSONToDataTable(string strJson)
        {
            return Newtonsoft.Json.JsonConvert.DeserializeObject(strJson, typeof(DataTable)) as DataTable;
        }
        #endregion

        #region DataTable与XML的转换
        public static string DataTableToXML(DataTable dt) //返回stringbuilder类型
         {
            dt.TableName = "0";
             StringBuilder stb = new StringBuilder();
             XmlSerializer serializer = new XmlSerializer(typeof(DataTable));
             XmlWriter writer = XmlWriter.Create(stb);
             serializer.Serialize(writer, dt);
             writer.Close();
             return stb.ToString();
         }
 
         public static DataTable XMLToDataTable(string strXml) //返回datatable类型
         {
             StringReader sr = new StringReader(strXml);
             XmlTextReader xtr = new XmlTextReader(sr);
             DataTable dt = new DataTable();
             dt.ReadXml(xtr);
            sr.Close();
             xtr.Close();
             return dt;
         }
        #endregion


        /// <summary>
        /// List<DataRow>转Json
        /// </summary>
        /// <param name="lst"></param>
        /// <returns></returns>
        public static string ListToString(List<DataRow> lst)
        {
            return JsonConvert.SerializeObject(lst);
        }

        /// <summary>
        /// json传List<DataRow>
        /// </summary>
        /// <param name="strList"></param>
        /// <returns></returns>
        public static List<DataRow> StringToList(string strList)
        {
            return JsonConvert.DeserializeObject<List<DataRow>>(strList);
        }       
    }
}