/**************************************************
 * 版权所有: 
 * 文 件 名: JSONHelper.cs
 * 文件描述: 
 * 类型说明: JSONHelper  JSON帮助类
 * 授权声明:
 * 版本历史: 
 *           v1.0.0 季健国   2010-07-03 新建
***************************************************/
using System;
using System.Collections.Generic;
using System.Data;
using System.Text;
using System.Web.Script.Serialization;
namespace Ant.Service.Common
{
    public class JsonHelper111
    {
        /// <summary>
        /// 对象[集合|嵌套对象]转JSON
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="obj">对象</param>
        /// <returns>标准JSON字符串</returns>
        /// 格式：{"key":"value","key":"value","key":"value"},{}
        public static string ToJSON<T>(T obj)
        {
            try
            {

                var js = new JavaScriptSerializer();
                js.RecursionLimit = 1;
                return js.Serialize(obj);
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
        }

        /// <summary>
        /// 转Grid 标准Json字符串
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="obj"></param>
        /// <returns></returns>
        /// {"page":1,"total":1,"records":1,"rows":[{"address":"china","depName":"testName","user":"jayjay","depId":"123"}] }
        public static string ToGridJson<T>(T obj)
        {
            var jsonBuilder = new StringBuilder();
            jsonBuilder.Append("{\"page\":1,\"total\":" + "1" + ",\"records\":1,\"rows\"");
            jsonBuilder.Append(":[");
            jsonBuilder.Append(ToJSON(obj));
            jsonBuilder.Append("]}");
            return jsonBuilder.ToString();
        }

        /// <summary>
        /// 转Grid 标准字符串
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="list">The list.</param>
        /// <returns></returns>
        /// {"page":1,"total":0,"records":3,"rows":[{"address":"china","depName":"testName","user":"jayjay","depId":"123"},{}] }
        public static string ArrayToGridJson<T>(List<T> list)
        {
            var jsonBuilder = new StringBuilder();
            jsonBuilder.Append("{\"page\":1,\"total\":" + (list.Count / 10) + ",\"records\":" + list.Count + ",\"rows\"");
            jsonBuilder.Append(":");
            jsonBuilder.Append(ToJSON(list));
            jsonBuilder.Append("}");

            return jsonBuilder.ToString();
        }

        /// <summary>
        /// 转Grid 标准字符串
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="obj"></param>
        /// <returns></returns>
        /// {"page":1,"total":0,"records":3,"rows":[{"address":"china","depName":"testName","user":"jayjay","depId":"123"},{}] }
        public static string ObjListToGridJson(object[] list, int currentPage, int totalPages, int rows)
        {
            var jsonBuilder = new StringBuilder();
            jsonBuilder.Append("{\"page\":" + currentPage + ",\"total\":" + totalPages + ",\"records\":" + rows +
                               ",\"rows\"");
            jsonBuilder.Append(":");
            jsonBuilder.Append(ToJSON(list));
            jsonBuilder.Append("}");

            return jsonBuilder.ToString();
        }

        /// <summary>
        /// Arrays to grid json without caption.
        /// </summary>
        /// <param name="DataArray">数据二维数组</param>
        /// <param name="CaptionArray">属性或者标题一维数组，顺序应与数据数组完全相同，且与第二维长度相等或者大于</param>
        /// <param name="currentPage">当前页面</param>
        /// <param name="rows">每页行数</param>
        /// <param name="TatolPageNumber">总页数，允许为空，为空时忽略掉此参数</param>
        /// <returns></returns>
        public static string ArrayToGridJsonWithoutCaption(object[] DataArray, string[] CaptionArray, int currentPage,
                                                           int rows, int TatolPageNumber)
        {
            var jsonBuilder = new StringBuilder();
            jsonBuilder.Append("{\"page\":" + currentPage + ",\"total\":" + TatolPageNumber + ",\"records\":" + rows +
                               ",\"rows\"");

            jsonBuilder.Append(":[");

            int i = 0, j = 0;
            foreach (object obj in DataArray)
            {
                if (0 < i)
                    jsonBuilder.Append(",");
                var SubArray = (object[])obj;
                jsonBuilder.Append("{");
                foreach (object subobj in SubArray)
                {
                    if (0 >= j)
                        jsonBuilder.Append("\"" + CaptionArray[j] + "\":\"" + subobj + "\"");
                    else
                        jsonBuilder.Append(",\"" + CaptionArray[j] + "\":\"" + subobj + "\"");

                    ++j;
                }
                jsonBuilder.Append("}");
                j = 0;
                ++i;
            }
            jsonBuilder.Append("]}");
            return jsonBuilder.ToString();
        }
        /// <summary>
        /// 转TreeGrid 标准字符串
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="obj"></param>
        /// <returns></returns>
        /// {"page":1,"total":0,"records":3,"rows":[{"id":"1",cell:["testName","jayjay","123"]}] }
        public static string IlistToGridJson<T>(IList<T> list)
        {
            var jsonBuilder = new StringBuilder();
            //jsonBuilder.Append("{\"page\":1,\"total\":" + (list.Count / 10) + ",\"records\":" + list.Count + ",\"rows\"");
            //jsonBuilder.Append(":[");

            //foreach (var t in list)
            //{
            //    var tt = t as RolePermission;
            //    if (tt != null)
            //    {

            //        jsonBuilder.Append("{");
            //        Permission p = tt.Permission;
            //        //权限Id
            //        jsonBuilder.AppendFormat("id:{0},", p.Id);
            //        jsonBuilder.Append("cell:[");
            //        //权限name
            //        jsonBuilder.Append("'" + p._Name + "',");
            //        //权限url
            //        jsonBuilder.Append("'" + p._Page + "',");
            //        //
            //        jsonBuilder.Append(0+",");
            //        jsonBuilder.Append("null,");
            //        jsonBuilder.Append(false+",");
            //        jsonBuilder.Append(false);
            //        jsonBuilder.Append("]}");
            //        jsonBuilder.Append(",");
            //    }
            //}
            //jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
            //jsonBuilder.Append("]");
            //jsonBuilder.Append("}");
            //json 生成
            //jsonBuilder.Append("{total:1,page:1,records:6,");
            //jsonBuilder.Append("rows:[");
            //jsonBuilder.Append("{id:1,cell:['Tabelle','1a2',0,null,false,false]},");
            //jsonBuilder.Append("{id:2,cell:['Tabelle','1a2',0,null,false,false]}");

            //jsonBuilder.Append("]}");

            //xml 生成
            //jsonBuilder.Append("<?xml version='1.0' encoding='utf-8' ?>");
            //jsonBuilder.Append("<rows>");
            //jsonBuilder.Append("<row>");
            //jsonBuilder.Append("<cell>1</cell>");
            //jsonBuilder.Append("<cell>系统管理</cell>");
            //jsonBuilder.Append("<cell />");
            //jsonBuilder.Append("<cell>0</cell>");
            //jsonBuilder.Append("<cell>1</cell>");
            //jsonBuilder.Append("<cell>14</cell>");
            //jsonBuilder.Append("<cell>false</cell>");
            //jsonBuilder.Append("<cell>false</cell>");
            //jsonBuilder.Append("</row>");
            //jsonBuilder.Append("<row>");
            //jsonBuilder.Append("<cell>2</cell>");
            //jsonBuilder.Append("<cell>部门维护</cell>");
            //jsonBuilder.Append("<cell>SysManage/SysDepList.aspx</cell>");
            //jsonBuilder.Append("<cell>1</cell>");
            //jsonBuilder.Append("<cell>2</cell>");
            //jsonBuilder.Append("<cell>3</cell>");
            //jsonBuilder.Append("<cell>true</cell>");
            //jsonBuilder.Append("<cell>true</cell>");
            //jsonBuilder.Append("</row>");
            //foreach (T t in list)
            //{
            //    var tt = t as RolePermission;
            //    if (null != tt)
            //    {
            //        jsonBuilder.Append("<row>");
            //        jsonBuilder.Append("<cell>1</cell>");
            //        jsonBuilder.Append("<cell>"+tt.Permission._Name+"</cell>");
            //        if (string.IsNullOrEmpty(tt.Permission._Page))
            //        {
            //            jsonBuilder.Append("<cell />");
            //            jsonBuilder.Append("<cell>0</cell>");
            //            jsonBuilder.Append("<cell>1</cell>");
            //            jsonBuilder.Append("<cell>14</cell>");
            //            jsonBuilder.Append("<cell>false</cell>");
            //            jsonBuilder.Append("<cell>false</cell>");
            //        }
            //        else
            //        {
            //            jsonBuilder.Append("<cell>SysManage/SysDepList.aspx</cell>");
            //            jsonBuilder.Append("<cell>0</cell>");
            //            jsonBuilder.Append("<cell>1</cell>");
            //            jsonBuilder.Append("<cell>14</cell>");
            //            jsonBuilder.Append("<cell>false</cell>");
            //            jsonBuilder.Append("<cell>false</cell>");
            //        }

            //        jsonBuilder.Append("</row>");
            //    }
            //}
            //jsonBuilder.Append("</rows>");

            return jsonBuilder.ToString();
        }

        ///// <summary>
        ///// 【角色维护】中的【权限列表】 to Gridjson 数据
        ///// </summary>
        ///// <param name="list"></param>
        ///// <param name="currentPage"></param>
        ///// <param name="totalPages"></param>
        ///// <param name="rows"></param>
        ///// <returns></returns>
        //public static string powList2Gridjson(object[] list, int currentPage, int totalPages, int rows)
        //{
        //    var jsonBuilder = new StringBuilder();
        //    jsonBuilder.Append("{\"page\":" + currentPage + ",\"total\":" + totalPages + ",\"records\":" + list.Length +
        //                       ",\"rows\"");
        //    jsonBuilder.Append(":[");
        //    foreach (object rowData in list)
        //    {
        //        if (null != rowData)
        //        {
        //            var p = (Permission) rowData;
        //            jsonBuilder.Append("{");
        //            jsonBuilder.Append("\"Id\":\"" + p.Id + "\","); //[ID]绑定
        //            jsonBuilder.Append("\"_Name\":\"" + p._Name + "\","); //[Name]绑定
        //            jsonBuilder.Append("\"_Page\":\"" + p._Page + "\","); //[page]绑定
        //            //判断【该页是否有此功能】
        //            if ("0" != p._Read.ToString())
        //            {
        //                jsonBuilder.Append("\"_Read\":\"" +
        //                                   "<input type='checkbox' onclick='return onCheck(this.id);' id='" +
        //                                   p.Id + "_Read' value='" + p._Read + "' />" + "\","); //[_read]绑定
        //            }
        //            else
        //            {
        //                jsonBuilder.Append("\"_Read\":\"" +
        //                                   "<input type='checkbox'onclick='return onCheck(this.id);' disabled='disabled' id='" +
        //                                   p.Id + "_Read' value='" + p._Read + "' />" + "\","); //[_read]绑定
        //            }
        //            //判断【该页是否有此功能】
        //            if ("0" != p._Write.ToString())
        //            {
        //                jsonBuilder.Append("\"_Write\":\"" +
        //                                   "<input type='checkbox'onclick='return onCheck(this.id);' onclick='onCheck();' id='" +
        //                                   p.Id + "_Write' value='" + p._Write + "' />" + "\","); //[_write]绑定
        //            }
        //            else
        //            {
        //                jsonBuilder.Append("\"_Write\":\"" +
        //                                   "<input type='checkbox'onclick='return onCheck(this.id);' disabled='disabled' id='" +
        //                                   p.Id + "_Write' value='" + p._Write + "' />" + "\","); //[_write]绑定
        //            }
        //            //判断【该页是否有此功能】
        //            if ("0" != p._Delete.ToString())
        //            {
        //                jsonBuilder.Append("\"_Delete\":\"" +
        //                                   "<input type='checkbox'onclick='return onCheck(this.id);' onclick='onCheck();' id='" +
        //                                   p.Id + "_Delete' value='" + p._Delete + "' />" + "\","); //[_delte]绑定
        //            }
        //            else
        //            {
        //                jsonBuilder.Append("\"_Delete\":\"" + "<input type='checkbox' disabled='disabled' id='" + p.Id +
        //                                   "_Delete' value='" + p._Delete + "' />" + "\","); //[_delete]绑定
        //            }
        //            //判断【该页是否有此功能】
        //            if ("0" != p._Update.ToString())
        //            {
        //                jsonBuilder.Append("\"_Update\":\"" +
        //                                   "<input type='checkbox'onclick='return onCheck(this.id);' onclick='onCheck();' id='" +
        //                                   p.Id + "_Update' value='" + p._Update + "' />" + "\","); //[_update]绑定
        //            }
        //            else
        //            {
        //                jsonBuilder.Append("\"_Update\":\"" + "<input type='checkbox' disabled='disabled' id='" + p.Id +
        //                                   "_Update' value='" + p._Update + "' />" + "\","); //[_update]绑定
        //            }
        //            //判断【该页是否有此功能】
        //            if ("0" != p._Cancel.ToString())
        //            {
        //                jsonBuilder.Append("\"_Cancel\":\"" +
        //                                   "<input type='checkbox' onclick='return onCheck(this.id);' id='" + p.Id +
        //                                   "_Cancel' value='" + p._Cancel + "' />" + "\","); //[_cancel解除]绑定
        //            }
        //            else
        //            {
        //                jsonBuilder.Append("\"_Cancel\":\"" + "<input type='checkbox' disabled='disabled' id='" + p.Id +
        //                                   "_Cancel' value='" + p._Cancel + "' />" + "\","); //[_cancel解除]绑定
        //            }

        //            //判断【该页是否有此功能】
        //            if ("0" != p._Audit.ToString())
        //            {
        //                jsonBuilder.Append("\"_Audit\":\"" +
        //                                   "<input type='checkbox' onclick='return onCheck(this.id);' id='" + p.Id +
        //                                   "_Audit' value='" + p._Audit + "' />" + "\""); //[_audit 审核]绑定
        //            }
        //            else
        //            {
        //                jsonBuilder.Append("\"_Audit\":\"" + "<input type='checkbox' disabled='disabled' id='" + p.Id +
        //                                   "_Audit' value='" + p._Audit + "' />" + "\""); //[_audit 审核]绑定
        //            }

        //            jsonBuilder.Append("}");
        //            jsonBuilder.Append(",");
        //        }
        //    }
        //    jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
        //    jsonBuilder.Append("]}");

        //    return jsonBuilder.ToString();
        //}

        ////------------------------------------------------------------------------
        ///// <summary>
        ///// 【角色维护】中的【权限列表】 to Gridjson 数据
        ///// </summary>
        ///// <param name="list"></param>
        ///// <param name="currentPage"></param>
        ///// <param name="totalPages"></param>
        ///// <param name="rows"></param>
        ///// <returns></returns>
        //public static string powList2GridjsonForView(object[] list, int currentPage, int totalPages, int rows)
        //{
        //    var jsonBuilder = new StringBuilder();
        //    jsonBuilder.Append("{\"page\":" + currentPage + ",\"total\":" + totalPages + ",\"records\":" + list.Length +
        //                       ",\"rows\"");
        //    jsonBuilder.Append(":[");
        //    foreach (object rowData in list)
        //    {
        //        if (null != rowData)
        //        {
        //            var p = (Permission) rowData;
        //            jsonBuilder.Append("{");
        //            jsonBuilder.Append("\"Id\":\"" + p.Id + "\","); //[ID]绑定
        //            jsonBuilder.Append("\"_Name\":\"" + p._Name + "\","); //[Name]绑定
        //            jsonBuilder.Append("\"_Page\":\"" + p._Page + "\","); //[page]绑定
        //            //判断【该页是否有此功能】
        //            if ("0" != p._Read.ToString())
        //            {
        //                jsonBuilder.Append("\"_Read\":\"" +
        //                                   "<input type='checkbox' onclick='return onCheck(this.id);' id='" +
        //                                   p.Id + "Read' value='" + p._Read + "' checked=checked disabled='disabled' />" +
        //                                   "\","); //[_read]绑定
        //            }
        //            else
        //            {
        //                jsonBuilder.Append("\"_Read\":\"" +
        //                                   "<input type='checkbox'onclick='return onCheck(this.id);' disabled='disabled' id='" +
        //                                   p.Id + "Read' value='" + p._Read + "' />" + "\","); //[_read]绑定
        //            }
        //            //判断【该页是否有此功能】
        //            if ("0" != p._Write.ToString())
        //            {
        //                jsonBuilder.Append("\"_Write\":\"" +
        //                                   "<input type='checkbox'onclick='return onCheck(this.id);' onclick='onCheck();' id='" +
        //                                   p.Id + "Write' value='" + p._Write +
        //                                   "' checked=checked  disabled='disabled' />" + "\","); //[_write]绑定
        //            }
        //            else
        //            {
        //                jsonBuilder.Append("\"_Write\":\"" +
        //                                   "<input type='checkbox'onclick='return onCheck(this.id);' disabled='disabled' id='" +
        //                                   p.Id + "Write' value='" + p._Write + "' />" + "\","); //[_write]绑定
        //            }
        //            //判断【该页是否有此功能】
        //            if ("0" != p._Delete.ToString())
        //            {
        //                jsonBuilder.Append("\"_Delete\":\"" +
        //                                   "<input type='checkbox' checked=checked disabled='disabled' onclick='return onCheck(this.id);' onclick='onCheck();' id='" +
        //                                   p.Id + "Delete' value='" + p._Delete + "' />" + "\","); //[_delte]绑定
        //            }
        //            else
        //            {
        //                jsonBuilder.Append("\"_Delete\":\"" + "<input type='checkbox' disabled='disabled' id='" + p.Id +
        //                                   "Delete' value='" + p._Delete + "' />" + "\","); //[_delete]绑定
        //            }
        //            //判断【该页是否有此功能】
        //            if ("0" != p._Update.ToString())
        //            {
        //                jsonBuilder.Append("\"_Update\":\"" +
        //                                   "<input type='checkbox' checked=checked disabled='disabled' onclick='return onCheck(this.id);' onclick='onCheck();' id='" +
        //                                   p.Id + "Update' value='" + p._Update + "' />" + "\","); //[_update]绑定
        //            }
        //            else
        //            {
        //                jsonBuilder.Append("\"_Update\":\"" + "<input type='checkbox' disabled='disabled' id='" + p.Id +
        //                                   "Update' value='" + p._Update + "' />" + "\","); //[_update]绑定
        //            }
        //            //判断【该页是否有此功能】
        //            if ("0" != p._Cancel.ToString())
        //            {
        //                jsonBuilder.Append("\"_Cancel\":\"" +
        //                                   "<input type='checkbox' checked=checked disabled='disabled' onclick='return onCheck(this.id);' id='" +
        //                                   p.Id +
        //                                   "Cancel' value='" + p._Cancel + "' />" + "\","); //[_cancel解除]绑定
        //            }
        //            else
        //            {
        //                jsonBuilder.Append("\"_Cancel\":\"" + "<input type='checkbox' disabled='disabled' id='" + p.Id +
        //                                   "Cancel' value='" + p._Cancel + "' />" + "\","); //[_cancel解除]绑定
        //            }

        //            //判断【该页是否有此功能】
        //            if ("0" != p._Audit.ToString())
        //            {
        //                jsonBuilder.Append("\"_Audit\":\"" +
        //                                   "<input type='checkbox' checked=checked disabled='disabled' onclick='return onCheck(this.id);' id='" +
        //                                   p.Id +
        //                                   "Audit' value='" + p._Audit + "' />" + "\""); //[_audit 审核]绑定
        //            }
        //            else
        //            {
        //                jsonBuilder.Append("\"_Audit\":\"" + "<input type='checkbox' disabled='disabled' id='" + p.Id +
        //                                   "Audit' value='" + p._Audit + "' />" + "\""); //[_audit 审核]绑定
        //            }

        //            jsonBuilder.Append("}");
        //            jsonBuilder.Append(",");
        //        }
        //    }
        //    jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
        //    jsonBuilder.Append("]}");

        //    return jsonBuilder.ToString();
        //}

        //------------------------------------------------------------------------
        /// <summary>
        /// JSON转对象
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="json">The json.</param>
        /// <returns>obj</returns>
        public static T ToObject<T>(string json)
        {
            try
            {
                var js = new JavaScriptSerializer();
                return js.Deserialize<T>(json);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// JSON转对象
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="j">The j.</param>
        /// <returns>obj[]对象集合</returns>
        public static object[] JSONToArray<T>(string j)
        {
            try
            {
                var js = new JavaScriptSerializer();
                return js.DeserializeObject(j) as object[];
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        #region DataSet 转 JSON

        /// <summary>  
        /// DataTable转换成Json格式  
        /// </summary>  
        /// <param name="dt">DataTable</param>  
        /// <returns>JSON字符串</returns>   
        /// 格式如:{"rows":[{"id":0,"cell":["address":"china","depName":"testName","user":"jayjay","depId":"123"]},....]}
        public static string DataTable2Json(DataTable dt)
        {
            var jsonBuilder = new StringBuilder();

            jsonBuilder.Append("{\"rows\":[");
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                jsonBuilder.Append("{");
                for (int j = 0; j < dt.Columns.Count; j++)
                {
                    jsonBuilder.Append("\"" + dt.Columns[j].ColumnName + "\"" + ":" + "\"" + dt.Rows[i][j] + "\"");
                    jsonBuilder.Append(",");
                }
                jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
                jsonBuilder.Append("},");
            }
            jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
            jsonBuilder.Append("]");
            jsonBuilder.Append("}");

            return jsonBuilder.ToString();
        }

        /// <summary>
        /// DataSet 转 JSON
        /// </summary>
        /// <param name="ds">DataSet</param>
        /// <returns>JSON字符串</returns>
        public static string DataSet2Json(DataSet ds)
        {
            var strJson = new StringBuilder();

            foreach (DataTable dt in ds.Tables)
            {
                strJson.Append("{\"");
                strJson.Append(dt.TableName);
                strJson.Append("\":");
                strJson.Append(DataTable2Json(dt));
                strJson.Append("}");
            }
            return strJson.ToString();
        }

        /// <summary>
        /// DataTable转GridJson
        /// </summary>
        /// <param name="dt">DataTable</param>
        /// <returns>Grid json字符串</returns>
        public static string DTToGridJson(DataTable dt)
        {
            var jsonBuilder = new StringBuilder();
            jsonBuilder.Append("{\"page\":1,\"total\":" + (dt.Rows.Count / 10) + ",\"records\":" + dt.Rows.Count +
                               ",\"rows\"");
            jsonBuilder.Append(":[");
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                jsonBuilder.Append("{");
                for (int j = 0; j < dt.Columns.Count; j++)
                {
                    jsonBuilder.Append("\"" + dt.Columns[j].ColumnName + "\"" + ":" + "\"" + dt.Rows[i][j] + "\"");
                    jsonBuilder.Append(",");
                }
                jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
                jsonBuilder.Append("},");
            }
            jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
            jsonBuilder.Append("]");
            jsonBuilder.Append("}");

            return jsonBuilder.ToString();
        }

        public static string DTToGridJson(DataTable dt, int currentPage, int totalPages, int pageRecorder)
        {
            var jsonBuilder = new StringBuilder();
            jsonBuilder.Append("{\"page\":" + currentPage + ",\"total\":" +
                               Math.Ceiling(totalPages / double.Parse(pageRecorder.ToString())) + ",\"records\":" +
                               totalPages +
                               ",\"rows\"");
            jsonBuilder.Append(":[");
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                jsonBuilder.Append("{");
                for (int j = 0; j < dt.Columns.Count; j++)
                {
                    jsonBuilder.Append("\"" + dt.Columns[j].ColumnName + "\"" + ":" + "\"" + dt.Rows[i][j] + "\"");
                    jsonBuilder.Append(",");
                }
                jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
                jsonBuilder.Append("},");
            }
            if (',' == jsonBuilder[jsonBuilder.Length - 1])
            {
                jsonBuilder.Remove(jsonBuilder.Length - 1, 1);
            }
            jsonBuilder.Append("]");
            jsonBuilder.Append("}");

            return jsonBuilder.ToString();
        }

        #endregion
    }
}