JSON 数据转成Table

public static 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++)
                {
                    try
                    {
                        string a = strRows[r].Split('#')[1].Trim();
                        if (a.Equals("null"))
                        {
                            dr[r] = "";
                        }
                        else
                        {
                            dr[r] = strRows[r].Split('#')[1].Trim().Replace("，", ",").Replace("：", ":").Replace(""", "");
                        }
                    }
                    catch (Exception e)
                    {

                        throw e;
                    }
                }
                tb.Rows.Add(dr);
                tb.AcceptChanges();
            }

            try
            {
                if (tb != null)
                {
                    return tb;
                }
                else
                {
                    throw new Exception("解析错误");
                }
            }
            catch (Exception e)
            {

                throw e;
            }
        }