DataSet ds2 = new DataSet();
            DataTable table = new DataTable();
            table.Columns.Add(new DataColumn("id") { Caption = "编号" });
            table.Columns.Add(new DataColumn("name") { Caption = "姓名" });
            DataRow row1 = table.NewRow();
            row1[;
            row1["name"] = "hello";
            table.Rows.Add(row1);
            ds2.Tables.Add(table);
            string sddtr = JsonConvert.SerializeObject(ds2);
            var dd = JsonConvert.DeserializeObject<DataSet>(sddtr);