c#如何把Json转成DataTable每一行都一一对应下面多出来的列自动添加到后方

c#如何把Json转成DataTable每一行都一一对应下面多出来的列自动添加到后方

/// <summary>
        /// 将json转换为DataTable
        /// </summary>
        /// <param name="strJson">得到的json</param>
        /// <returns></returns>
        private DataTable JsonToDataTable(string strJson)
        {
            //转换json格式
            strJson = strJson.Replace(",\"", "*\"").Replace("\":", "\"#").ToString();
            //取出表名   
            var rg = new Regex(@"(?<={)[^:]+(?=:\[)", RegexOptions.IgnoreCase);
            string strName = rg.Match(strJson).Value;
            DataTable tb = null;
            //去除表名   
            strJson = strJson.Substring(strJson.IndexOf("[") + 1);
            strJson = strJson.Substring(0, strJson.IndexOf("]"));

            //获取数据   
            rg = new Regex(@"(?<={)[^}]+(?=})");
            MatchCollection mc = rg.Matches(strJson);
            for (int i = 0; i < mc.Count; i++)
            {
                string strRow = mc[i].Value;
                string[] strRows = strRow.Split('*');

                //创建表   
                if (tb == null)
                {
                    tb = new DataTable();
                    tb.TableName = strName;
                    foreach (string str in strRows)
                    {
                        var dc = new DataColumn();
                        string[] strCell = str.Split('#');

                        if (strCell[0].Substring(0, 1) == "\"")
                        {
                            int a = strCell[0].Length;
                            dc.ColumnName = strCell[0].Substring(1, a - 2);
                        }
                        else
                        {
                            dc.ColumnName = strCell[0];
                        }
                        tb.Columns.Add(dc);
                    }
                    tb.AcceptChanges();
                }

                //增加内容   
                DataRow dr = tb.NewRow();
                for (int r = 0; r < strRows.Length; r++)
                {
                    dr[r] = strRows[r].Split('#')[1].Trim().Replace("，", ",").Replace("：", ":").Replace("\"", "");
                }
                tb.Rows.Add(dr);
                tb.AcceptChanges();
            }

            return tb;
        }
这是json转tb的，还有后面那句什么意思？没看懂

public static javascriptserializer js = new javascriptserializer();  public static void responsejsondata(list&lt;object&gt; list)         {             string jsonstring = js.serialize(list);             // 输出串               httpcontext.current.response.clear();             httpcontext.current.response.buffer = true;             httpcontext.current.response.expiresabsolute = datetime.now.adddays(-1);             httpcontext.current.response.addheader(&quot;pragma&quot;, &quot;no-cache&quot;);             httpcontext.current.response.addheader(&quot;cache-control&quot;, &quot;&quot;);             httpcontext.current.response.cachecontrol = &quot;no-cache&quot;;             httpcontext.current.response.contentencoding = encoding.utf8;             httpcontext.current.response.contenttype = &quot;application/json&quot;;             httpcontext.current.response.write(jsonstring);             httpcontext.current.response.flush();             httpcontext.current.response.end();         }命名空间 using system.web.script.serialization;