[英]Deserialize array Object using Newtonsoft Json.Net
I have following json string 我有以下json字符串
[
{
"itemtype": "note",
"body": "some text"
},
{
"itemtype": "list",
"items": [
{
"item": "some text"
},
{
"item": "some text"
}
]
},
{
"itemtype": "link",
"url": "some link"
}
]
Which I need to parse in C#. 我需要在C#中解析。 My string might return error codes like this (or any other unknown error codes)
我的字符串可能会返回这样的错误代码(或任何其他未知的错误代码)
{"Error":"You need to login before accessing data"}
Or it might be just an empty array (no data) 或者它可能只是一个空数组(没有数据)
[]
Here is my code 这是我的代码
public void ParseData(string inStr) {
if (inStr.Trim() != "") {
dynamic result = JsonConvert.DeserializeObject(inStr);
if (result is Array) {
foreach (JObject obj in result.objectList) {
switch (obj.Property("itemtype").ToString()) {
case "list": // do something
break;
case "note": // do something
break;
case "link": // do something
break;
}
}
} else {
// ... read error messages
}
}
}
Problem 问题
In above code result
is never of type Array
. 在上面的代码中,
result
永远不会是Array
类型。 in fact I have no way to check what is its type either (I tried typeof). 事实上我也无法检查它的类型(我试过typeof)。
Question 题
How can I check if I have an array in string and how can I check if it has objects in it (Please note, this is not a typed array) 如何检查字符串中是否有数组,如何检查其中是否有对象(请注意,这不是类型化的数组)
JsonConvert.DeserializeObject
将您的Json转换为JArray
而不是Array
- 将您的检查更新为:
if (result is JArray)
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