Deserializing JSON Object Array with Json.net
Slight modification to what was stated above. My Json format, which validates was
{
mycollection:{[
{
property0:value,
property1:value,
},
{
property0:value,
property1:value,
}
]
}
}
Using AlexDev's response, I did this Looping each child, creating reader from it
public partial class myModel
{
public static List<myModel> FromJson(string json) => JsonConvert.DeserializeObject<myModelList>(json, Converter.Settings).model;
}
public class myModelList {
[JsonConverter(typeof(myModelConverter))]
public List<myModel> model { get; set; }
}
class myModelConverter : JsonConverter
{
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
var token = JToken.Load(reader);
var list = Activator.CreateInstance(objectType) as System.Collections.IList;
var itemType = objectType.GenericTypeArguments[0];
foreach (var child in token.Children()) //mod here
{
var newObject = Activator.CreateInstance(itemType);
serializer.Populate(child.CreateReader(), newObject); //mod here
list.Add(newObject);
}
return list;
}
public override bool CanConvert(Type objectType)
{
return objectType.IsGenericType && (objectType.GetGenericTypeDefinition() == typeof(List<>));
}
public override bool CanWrite => false;
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) => throw new NotImplementedException();
}
Using the accepted answer you have to access each record by using Customers[i].customer
, and you need an extra CustomerJson
class, which is a little annoying. If you don't want to do that, you can use the following:
public class CustomerList
{
[JsonConverter(typeof(MyListConverter))]
public List<Customer> customer { get; set; }
}
Note that I'm using a List<>
, not an Array. Now create the following class:
class MyListConverter : JsonConverter
{
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
var token = JToken.Load(reader);
var list = Activator.CreateInstance(objectType) as System.Collections.IList;
var itemType = objectType.GenericTypeArguments[0];
foreach (var child in token.Values())
{
var childToken = child.Children().First();
var newObject = Activator.CreateInstance(itemType);
serializer.Populate(childToken.CreateReader(), newObject);
list.Add(newObject);
}
return list;
}
public override bool CanConvert(Type objectType)
{
return objectType.IsGenericType && (objectType.GetGenericTypeDefinition() == typeof(List<>));
}
public override bool CanWrite => false;
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) => throw new NotImplementedException();
}
For those who don't want to create any models, use the following code:
var result = JsonConvert.DeserializeObject<
List<Dictionary<string,
Dictionary<string, string>>>>(content);
Note: This doesn't work for your JSON string. This is not a general solution for any JSON structure.
You can create a new model to Deserialize your JSON CustomerJson
:
public class CustomerJson
{
[JsonProperty("customer")]
public Customer Customer { get; set; }
}
public class Customer
{
[JsonProperty("first_name")]
public string Firstname { get; set; }
[JsonProperty("last_name")]
public string Lastname { get; set; }
...
}
And you can deserialize your JSON easily:
JsonConvert.DeserializeObject<List<CustomerJson>>(json);
Documentation: Serializing and Deserializing JSON