CODEWITHSUNDEEP
c#arraysjson
user3478897
user3478897

Reputation: 99

Type is not supported for deserialization of an array

I'm trying to dezerialize an array but I keep running into an error.

JavaScriptSerializer jsonSerializer = new JavaScriptSerializer();
Profiles thingy = jsonSerializer.Deserialize<Profiles>(fileContents);

This is the code that gives me the error:

Type is not supported for deserialization of an array.

This is how my JSON looks:

[
 {
  "Number": 123,
  "Name": "ABC",
  "ID": 123,
  "Address": "ABC"
 }
]

Upvotes: 6

Views: 25092

Answers (2)

Jon Skeet
Jon Skeet

Reputation: 1500815

You just need to deserialize it to a collection of some sort - e.g. an array. After all, your JSON does represent an array, not a single item. Short but complete example:

using System;
using System.IO;
using System.Web.Script.Serialization;

public class Person
{
    public string Name { get; set; }
    public string ID { get; set; }
    public string Address { get; set; }
    public int Number { get; set; }
}

class Test
{
    static void Main()
    {
        var serializer = new JavaScriptSerializer();
        var json = File.ReadAllText("test.json");
        var people = serializer.Deserialize<Person[]>(json);
        Console.WriteLine(people[0].Name); // ABC
    }
}

Upvotes: 11

Donal
Donal

Reputation: 32713

The JSON is a list. The square brackets in JSON indicate an array or list of objects. So you need to tell it to return a list of objects:

JavaScriptSerializer jsonSerializer = new JavaScriptSerializer();
var profiles = jsonSerializer.Deserialize<List<Profiles>>(fileContents);

Upvotes: 6

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