json - 如何在 VB.NET Newtonsoft 中解析 Json 孙子

Question

我无法在列表框中显示 tongits,black jack, 21

我只能在列表框中显示最喜欢的游戏、游戏

以及如何计算问卷中的问题数量？

---

json数据

 {
   "id": 1,
   "status": "DRAFT",
   "title": "GAMES",
   "author": "foo",

   "questionnaires": [
          {
           "id": 1,
           "question": "Favorite game",
           "answers": [
                        "tongits",
                        "black jack",
                          "21"
                      ]
           },
         {
          "id": 2,
          "question": "game",
          "answers": [
                       "basketball",
                       "volleyball"
                     ]
          }
      ]
  }

这是我在 VB 中的代码

Dim o As JObject = JObject.Parse(json)

Dim results As List(Of JToken) = o.Children().ToList

For Each item As JProperty In results

item.CreateReader()
Select Case item.Name
    Case "questionnaires"
        Dim question As String
        For Each subitem As JObject In item.Values
            listbox1.item.add(question)
        Next
End Select
Next

---

很乐意感谢谁会帮助

Answer 1

您有一个拼写错误“问卷”，因为这在您的 JSON 中不存在（“问卷”存在）。你也不需要搜索它。以下是您可以参考的 Javascript 伪代码。应该与 VB.Net 非常相似。

var jsonData = '{"id": 1,   "status": "DRAFT",  "title": "GAMES",   "author": "foo", "questionnaires": [          {          "id": 1,      "question": "Favorite game",           "answers": [                        "tongits",                        "black jack",                          "21"                      ]           },         {          "id": 2,          "question": "game",          "answers": [                       "basketball",                       "volleyball"                     ]          }      ]  }';    
var jsonObj = JSON.parse(jsonData);
for (var question in jsonObj.questionnaires)
{
  console.log('ID:' + jsonObj.questionnaires[question].id);
  console.log('Question:' + jsonObj.questionnaires[question].question);
  for (var answerToQuestion in jsonObj.questionnaires[question].answers)
  {
    console.log('--->Answer:' + jsonObj.questionnaires[question].answers[answerToQuestion]);
  }
}

结果：

ID:1
Question:Favorite game
--->Answer:tongits
--->Answer:black jack
--->Answer:21
ID:2
Question:game
--->Answer:basketball
--->Answer:volleyball