数据表转换成json(DatatableToJson)

 1   #region 转换Table为JSON数据

 2         /// <summary>

 3         /// 转换Table为JSON数据

 4         /// </summary>

 5         /// <param name="dt"></param>

 6         /// <returns></returns>

 7         public static string TableToJson(DataTable dt)

 8         {

 9             StringBuilder sb = new StringBuilder("[");

10             foreach (DataRow row in dt.Rows)

11             {

12                 if (!row.Equals(dt.Rows[0])) sb.Append(",");

13                 sb.Append("{");

14                 foreach (DataColumn col in dt.Columns)

15                 {

16                     if (!col.Equals(dt.Columns[0])) sb.Append(",");

17                     string value = GetText(row, col.ColumnName);

18                     if (string.IsNullOrEmpty(value)) continue;          //跳过为空的数据

19                     sb.Append("\"").Append(col.ColumnName).Append("\":\"").Append(value).Append("\"");

20                 }

21                 sb.Append("}");

22             }

23             sb.Append("]");

24             return sb.ToString();

25         }

26         /// <summary>

27         /// 从datable中读取文本

28         /// </summary>

29         /// <param name="row"></param>

30         /// <param name="col"></param>

31         /// <returns></returns>

32         private static string GetText(DataRow row, string col)

33         {

34             return row.IsNull(col) ? string.Empty : row[col].ToString();

35         }

36         #endregion

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