How Can C# Structs Efficiently Deserialize Complex JSON Objects from APIs?

Use the C#structure to highly deepen the complicated JSON object

When dealing with complex JSON objects, it is often not enough to only be transformed into a list of basic types. In order to effectively handle the nested structure, the C#structure is recommended.

Question:

JSON object obtained from the Facebook Graph API is unable to be serialized into a list of objects due to invalid original objects.

Solution:

Definition structure: Create a separate structure to represent external and internal JSON objects. For example, consider a Friends structure containing a list of FacebookFriend structures:

1. Capitalized JSON:
Use

to sequenize JSON to FRIENDS structure:

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

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

2. Access internal objects: JavaScriptSerializer Now you can access the internal object by iterating the Data list of the FRIENDS structure:

<code class="language-csharp">Friends facebookFriends = new System.Web.Script.Serialization.JavaScriptSerializer().Deserialize<Friends>(result);</code>

Example:
Output:

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

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