Newtonsoft.Json.Converters.DataTableConverter.ReadJson C# (CSharp) Méthode

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
      DataTable dt;

      if (reader.TokenType == JsonToken.PropertyName)
      {
        dt = new DataTable((string)reader.Value);
        reader.Read();
      }
      else
      {
        dt = new DataTable();
      }

      reader.Read();

      while (reader.TokenType == JsonToken.StartObject)
      {
        DataRow dr = dt.NewRow();
        reader.Read();

        while (reader.TokenType == JsonToken.PropertyName)
        {
          string columnName = (string) reader.Value;

          reader.Read();

          if (!dt.Columns.Contains(columnName))
          {
            Type columnType = GetColumnDataType(reader.TokenType);
            dt.Columns.Add(new DataColumn(columnName, columnType));
          }

          dr[columnName] = reader.Value ?? DBNull.Value;
          reader.Read();
        }

        dr.EndEdit();
        dt.Rows.Add(dr);

        reader.Read();
      }

      return dt;
    }

        /// <summary>
        /// Reads the JSON representation of the object.
        /// </summary>
        /// <param name="reader">The <see cref="JsonReader"/> to read from.</param>
        /// <param name="objectType">Type of the object.</param>
        /// <param name="existingValue">The existing value of object being read.</param>
        /// <param name="serializer">The calling serializer.</param>
        /// <returns>The object value.</returns>
        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
        {
            // handle typed datasets
            DataSet ds = (objectType == typeof(DataSet))
                ? new DataSet()
                : (DataSet)Activator.CreateInstance(objectType);

            DataTableConverter converter = new DataTableConverter();

            reader.Read();

            while (reader.TokenType == JsonToken.PropertyName)
            {
                DataTable dt = ds.Tables[(string)reader.Value];
                bool exists = (dt != null);

                dt = (DataTable)converter.ReadJson(reader, typeof(DataTable), dt, serializer);

                if (!exists)
                    ds.Tables.Add(dt);

                reader.Read();
            }

            return ds;
        }