Can I determine whether the string can deserialize by newtonsoft?

Question

In my application I'm using newtonsoft to serialize and deserialize object, I want to know is there any built in API to determine that input string can deserialize to specific object or not?

public TObject Deserialize<TObject>(string serialized)
{   
    /// I want check the condition, and if is not serialized string just return default(TObject)     
    return JsonConvert.DeserializeObject<TObject>(serialized);
}

I don't want to use try catch. Currently I implemented like that but looking to find a way to verify the string before start to deserialize object.

Already I saw this question Deserialize json in a "TryParse" way, but its not my answer cause I don't have any specific schema and JSON format can change dynamically.

Answer 1

There is no TryParse in Json.Net as of the current release. If you don't have a known schema to validate against, and you don't want to use try...catch then your only other option that I can see is to attach an error handler to the serializer and use that as a means of detecting and/or handling errors. See "Error Handling" in the documentation.

Answer 2

    private static bool TryParseJSON(string json, out JObject jObject)
    {
        try
        {
            jObject = JObject.Parse(json);
            return true;
        }
        catch
        {
            jObject = null;
            return false;
        }
    }

worked just fine for my scenario