c#输出json,其中包含子json （可以含 无限级 子json）的方法思路

首页 给出  DataTable 转Json 的方法：

 1    public static string TableToJson(DataTable dt)
 2         {
 3             List<Dictionary<string, object>> list = new List<Dictionary<string, object>>();
 4             foreach (DataRow dr in dt.Rows)//每一行信息，新建一个Dictionary<string,object>,将该行的每列信息加入到字典
 5             {
 6                 Dictionary<string, object> result = new Dictionary<string, object>();
 7                 foreach (DataColumn dc in dt.Columns)
 8                 {
 9                     result.Add(dc.ColumnName, dr[dc].ToString());
10                 }
11                 list.Add(result);
12             }
13             return ToJson(list);//调用Serializer方法 
14         }

 1   /// <summary>
 2         /// 将集合转换为json
 3         /// </summary>
 4         /// <param name="d"></param>
 5         /// <returns></returns>
 6         public static string ToJson(object d)
 7         {
 8             JavaScriptSerializer jss = new JavaScriptSerializer();
 9             return jss.Serialize(d);
10         }

 

具体  转换实例：

 1 #region 获取我的订单
 2         public string GetMyOrders(string _StrJson)
 3         {
 4             StringBuilder sbStr = new StringBuilder();
 5             sbStr.Append("[{\"msg\":\"获取失败,参数错误。\",\"data\":\"[]\",\"state\":\"2\"}]");
 6             try
 7             {
 8                 CommonJsonModel oModel = new CommonJsonModel(Regex.Replace(_StrJson, @"\r\n", ""));
 9                 List<CommonJsonModel> lst = oModel.GetCollection();
10                 foreach (CommonJsonModel item in lst)
11                 {
12                     //[{"_Page":"1","_PageSize":"10","_Type":"1","_Status":"0","_LoginId":"15","_Profession":"390"}]
13                     int Page = item.GetValue("_Page") == "" ? 1 : Convert.ToInt32(item.GetValue("_Page"));
14                     int PageSize = item.GetValue("_PageSize") == "" ? 10 : Convert.ToInt32(item.GetValue("_PageSize"));
15                     int Type = item.GetValue("_Type") == "" ? 0 : Convert.ToInt32(item.GetValue("_Type"));
16                     int Status = item.GetValue("_Status") == "" ? 0 : Convert.ToInt32(item.GetValue("_Status"));
17                     int LoginId = item.GetValue("_LoginId") == "" ? 0 : Convert.ToInt32(item.GetValue("_LoginId"));
18                     string Profession = item.GetValue("_Profession");
19                     StringBuilder sbSqlWhere = new StringBuilder();
20                     sbSqlWhere.Append(" PersonIsdel=0");
21                     if (Status > 0) { sbSqlWhere.AppendFormat(" and State={0}", Status); }
22                     if (LoginId > 0) { sbSqlWhere.AppendFormat(" and AddPerson={0}", LoginId); }
23                     if (Profession != "")
24                     {
25                         sbSqlWhere.AppendFormat(" and BusinessId in(select ID from TB_Business where Profession={0})", Profession);
26                     }
27                     StringBuilder sbFields = new StringBuilder();
28                     sbFields.AppendFormat("*", Type);
29                     DataSet ds = bll.GetList("TB_BusinessOrders", sbFields.ToString(), "AddTime", PageSize, Page, false, true, sbSqlWhere.ToString());
30                     if (ds != null && ds.Tables[0].Rows.Count > 0)
31                     {
                          //第一个DataTable 32                         DataTable dt = ds.Tables[0];
                          //新增一列子集 33                         dt.Columns.Add("OrdelDetailList");
34                         foreach (DataRow dr in dt.Rows)
35                         {
36                             dr["OrdelDetailList"] = GetOrderDetailList(dr["ID"].ToString());
37                         }
38                         sbStr.Clear();
                          //整 个DataTable转Json 39                         string strTemp = EasyUIJsonHelper.TableToJson(ds.Tables[0]);
                           //去除多余的括号转义符号
40                         strTemp = strTemp.Replace("\\", ""); 41 strTemp = strTemp.Replace("\"[{", "[{"); 42 strTemp = strTemp.Replace("}]\"", "}]");
                     // 完毕 43                         sbStr.Append("[{\"msg\":\"获取成功。\",\"data\":" + strTemp + ",\"state\":\"0\"}]");
44                     }
45                     else
46                     {
47                         sbStr.Clear();
48                         sbStr.Append("[{\"msg\":\"获取成功,无匹配数据。\",\"data\":\"[]\",\"state\":\"0\"}]");
49                     }
50                 }
51             }
52             catch { }
53             return sbStr.ToString();
54         }
55 
56         private string GetOrderDetailList(string orderId)
57         {
58             StringBuilder sbStr = new StringBuilder();
59             DataSet ds = new ZhouFu.Bll.TB_BusinessOrdersDetail().GetList("OrderId=" + orderId);
60             if (ds != null && ds.Tables[0].Rows.Count > 0)
61             {
62                 DataTable dt = ds.Tables[0];
63                 sbStr.Clear();
64                 sbStr.Append(EasyUIJsonHelper.TableToJson(dt));
65             }
66             return sbStr.ToString();
67         }
68         #endregion