I happily use the Newtonsoft JSON library.
For example, I would create a JObject from a .NET object, in this case an instance of Exception (might or might not be a subclass)
if (result is Exception)
var jobjectInstance = JObject.FromObject(result);
now I know the library can deserialize JSON text (i.e. a string) to an object
// only works for text (string)
Exception exception = JsonConvert.DeserializeObject<Exception>(jsontext);
but what I am looking for is:
// now i do already have an JObject instance
Exception exception = jobjectInstance.????
Well it is clear that I can go from on JObject back to JSON text and then use the deserialize functionality, but that seems backwards to me.
This question is related to
.net
json
exception
serialization
json.net
According to this post, it's much better now:
// pick out one album
JObject jalbum = albums[0] as JObject;
// Copy to a static Album instance
Album album = jalbum.ToObject<Album>();
Documentation: Convert JSON to a Type
Too late, just in case some one is looking for another way:
void Main()
{
string jsonString = @"{
'Stores': [
'Lambton Quay',
'Willis Street'
],
'Manufacturers': [
{
'Name': 'Acme Co',
'Products': [
{
'Name': 'Anvil',
'Price': 50
}
]
},
{
'Name': 'Contoso',
'Products': [
{
'Name': 'Elbow Grease',
'Price': 99.95
},
{
'Name': 'Headlight Fluid',
'Price': 4
}
]
}
]
}";
Product product = new Product();
//Serializing to Object
Product obj = JObject.Parse(jsonString).SelectToken("$.Manufacturers[?(@.Name == 'Acme Co' && @.Name != 'Contoso')]").ToObject<Product>();
Console.WriteLine(obj);
}
public class Product
{
public string Name { get; set; }
public decimal Price { get; set; }
}
From the documentation I found this
JObject o = new JObject(
new JProperty("Name", "John Smith"),
new JProperty("BirthDate", new DateTime(1983, 3, 20))
);
JsonSerializer serializer = new JsonSerializer();
Person p = (Person)serializer.Deserialize(new JTokenReader(o), typeof(Person));
Console.WriteLine(p.Name);
The class definition for Person should be compatible to the following:
class Person {
public string Name { get; internal set; }
public DateTime BirthDate { get; internal set; }
}
Edit
If you are using a recent version of JSON.net and don't need custom serialization, please see TienDo's answer above (or below if you upvote me :P ), which is more concise.
Source: Stackoverflow.com