ServiceStack.Text json deserialization creates wrong object instead of throwing on invalid json input string

This is resolved in ServiceStack.Text v4+ which by default doesn't populate incomplete collections, e.g:

public class Poco{    public string ExtId { get; set; }    public string Name { get; set; }    public string[] Mobiles { get; set; }}var json = "[{\"ExtId\":\"2\",\"Name\":\"VIP sj�lland\",\"Mobiles\":[\"4533333333\",\"4544444444\"]";var dto = json.FromJson<Poco[]>();Assert.That(dto[0].ExtId, Is.EqualTo("2"));Assert.That(dto[0].Name, Is.EqualTo("VIP sj�lland"));Assert.That(dto[0].Mobiles, Is.Null);

Or if preferred can throw on Error:

JsConfig.ThrowOnDeserializationError = true;Assert.Throws<SerializationException>(() =>     json.FromJson<Poco[]>());

C# is a little bit picky when it comes to JSON. Following would be valid! Note i do not have anonymous object array as the default element.

{    "ExtItem": [        {            "ExtId": "2",            "Name": "VIPsj�lland",            "Mobiles": [                "4533333333",                "4544444444"            ]        }    ]}

If i generate a POCO from this I get

public class Rootobject{    public Extitem[] ExtItem { get; set; }}public class Extitem{    public string ExtId { get; set; }    public string Name { get; set; }    public string[] Mobiles { get; set; }}

I personally use extension method to string

public static class Extensions{    public  static bool DeserializeJson<T>(this String str, out T item)    {        item = default(T);        try        {            item = new JavaScriptSerializer().Deserialize<T>(str);            return true;        }        catch (Exception ex)        {            return false;        }    }}

This would enable me to write:

Rootobject ext;const string validJson = @"{    ""ExtItem"": [        {            ""ExtId"":""2"",            ""Name"":""VIPsj�lland"",            ""Mobiles"":[                ""4533333333"",                ""4544444444""            ]        }    ]}";if (validJson.DeserializeJson(out ext)){ //valid input     // following would print 2 elements : 4533333333, 4544444444    Console.WriteLine(string.Join(", ", ext.ExtItem.First().Mobiles)); } //invalid input

I tried this an have the exception thrown when I missed the } at the end.

In C#, the format for JSON is {"name", "value"} not [{"name", "value"}].

class M        {            public string ExtId { get; set; }            public string Name { get; set; }            public List<string> Mobiles { get; set; }        }string str = "{\"ExtId\":\"2\",\"Name\":\"VIP\",\"Mobiles\":[\"4533333333\",\"4544444444\"]";M m = JsonConvert.DeserializeObject<M>(str);

When run this, you will get error as a } is missing.

Using:

string str = "{\"ExtId\":\"2\",\"Name\":\"VIP\",\"Mobiles\":[\"4533333333\",\"4544444444\"]}";

The object is deserialized fine.

You can see the JSON of this object from:

string s = JsonConvert.SerializeObject(m);