lserp_cs_6.0/其他程序/Lserp_UpdateEmp/Lserp_UpdateServer/JsonUtil.cs

/******************************
* 说明：Json相关操作
* 创建人：龚宇超
* 创建日期：2017-10-23
* 修改人：
* 修改日期：
* 修改备注：
* 版本：1.0.0.0
******************************/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Web.Script.Serialization;
using System.Collections;

namespace Lserp_UpdateServer
{
    /// <summary>
    /// Json 相关操作
    /// </summary>
    public static class JsonUtil
    {
        /// <summary>
        /// <para>说明：json 字符串转换为DataTable</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-10-23 </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        /// <param name="json">The json.</param>
        /// <returns>DataTable.</returns>
        public static DataTable ToDataTable(this string json)
        {
            DataTable dataTable = new DataTable();  //实例化
            DataTable result;
            try
            {
                JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
                javaScriptSerializer.MaxJsonLength = Int32.MaxValue; //取得最大数值
                ArrayList arrayList = javaScriptSerializer.Deserialize<ArrayList>(json);
                if (arrayList.Count > 0)
                {
                    foreach (Dictionary<string, object> dictionary in arrayList)
                    {
                        if (dictionary.Keys.Count<string>() == 0)
                        {
                            result = dataTable;
                            return result;
                        }
                        if (dataTable.Columns.Count == 0)
                        {
                            foreach (string current in dictionary.Keys)
                            {
                                dataTable.Columns.Add(current, dictionary[current].GetType());
                            }
                        }
                        DataRow dataRow = dataTable.NewRow();
                        foreach (string current in dictionary.Keys)
                        {
                            dataRow[current] = dictionary[current];
                        }

                        dataTable.Rows.Add(dataRow); //循环添加行到DataTable中
                    }
                }
            }
            catch
            {

            }
            result = dataTable;
            return result;
        }
        /// <summary>
        /// <para>说明：</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-10-23 </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        /// <param name="json">The json.</param>
        /// <returns>DataRow.</returns>
        public static DataRow ToDataRow(this string json)
        {
            if (string.IsNullOrWhiteSpace(json)) return null;

            return ToDataTable(json).Rows[0];
        }
        /// <summary>
        /// <para>说明：DataTable To JsonArray</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-10-23 </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        /// <param name="dtTable">The dt table.</param>
        /// <returns>System.String.</returns>
        public static string ToJsonArray(this DataTable dtTable)
        {
            JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
            javaScriptSerializer.MaxJsonLength = Int32.MaxValue; //取得最大数值
            ArrayList arrayList = new ArrayList();
            foreach (DataRow dataRow in dtTable.Rows)
            {
                Dictionary<string, object> dictionary = new Dictionary<string, object>();  //实例化一个参数集合
                foreach (DataColumn dataColumn in dtTable.Columns)
                {
                    dictionary.Add(dataColumn.ColumnName, dataRow[dataColumn.ColumnName].ToStr());
                }
                arrayList.Add(dictionary); //ArrayList集合中添加键值
            }

            return javaScriptSerializer.Serialize(arrayList);  //返回一个json字符串
        }
        /// <summary>
        /// <para>说明：DataRow To Json</para>
        /// <para>创建人：龚宇超</para>
        /// <para>创建日期：2017-10-23 </para>
        /// <para>修改人：</para>
        /// <para>修改日期：</para>
        /// <para>修改备注：</para>
        /// <para>版本：1.0</para>
        /// </summary>
        /// <param name="row">The row.</param>
        /// <returns>System.String.</returns>
        public static string ToJsonObject(this DataRow row)
        {
            JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
            javaScriptSerializer.MaxJsonLength = Int32.MaxValue; //取得最大数值
            ArrayList arrayList = new ArrayList();

            Dictionary<string, object> dictionary = new Dictionary<string, object>();  //实例化一个参数集合
            foreach (DataColumn dataColumn in row.Table.Columns)
            {
                dictionary.Add(dataColumn.ColumnName, row[dataColumn.ColumnName].ToStr());
            }
            arrayList.Add(dictionary); //ArrayList集合中添加键值
            return javaScriptSerializer.Serialize(arrayList);
        }
    }
}