How to Successfully Deserialize JSON Objects Containing Lists in C#?

Use C# counter -sequence json

When trying to sequence the JSON object into a list of objects, it may be difficult due to the invalid original object. This article will provide a solution to this problem, so that you can successfully lead to such JSON objects.

Consider the following JSON objects, it indicates that the Facebook friends list obtained through Graph API:

To discern this JSON object, we need to create a structure that matches its mode. In this example, it is a FacebookFriend object list:

<code>{
    "data": [
        {
            "id": "518523721",
            "name": "ftyft"
        },
        // 更多数据...
    ]
}</code>

After defining these structures, we can now use JavaScriptSerializer to serialize JSON objects:

<code class="language-csharp">public class FriendData
{
    public List<FacebookFriend> data { get; set; }
}

public class FacebookFriend
{
    public string id { get; set; }
    public string name { get; set; }
}</code>

This will create a FriendData object containing a list of Facebookfriend objects, which can access each friend data. Please note that the names used here are only used to explain the purpose; choose the appropriate category name for your project.

<code class="language-csharp">FriendData facebookFriends = new JavaScriptSerializer().Deserialize<FriendData>(result);</code>

In order to demonstrate the process of the deepening sequence, please consider the following test code:

executing this code will generate the following output:

<code class="language-csharp">string json =
    @"{""data"":[{""id"":""518523721"",""name"":""ftyft""}, {""id"":""527032438"",""name"":""ftyftyf""}, {""id"":""527572047"",""name"":""ftgft""}, {""id"":""531141884"",""name"":""ftftft""}]}";

FriendData facebookFriends = new JavaScriptSerializer().Deserialize<FriendData>(json);

foreach (var item in facebookFriends.data)
{
    Console.WriteLine("id: {0}, name: {1}", item.id, item.name);
}</code>

This demonstrates the process of successfully serializing the JSON object into a list of FacebookFriend objects.

<code>id: 518523721, name: ftyft
id: 527032438, name: ftyftyf
id: 527572047, name: ftgft
id: 531141884, name: ftftft</code>

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