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c#jsonjson.net
Christian Andersson
Christian Andersson

Reputation: 151

Newtonsoft.Json Deserializing Empty string

Lets say I have a object looking like this:

public class MyObject
{
    [JsonProperty(Required = Required.Always)]
    public string Prop1 { get; set; }

    [JsonProperty(Required = Required.Always)]
    public string Prop2 { get; set; }
}

Now if I try to deserialize a string using JsonConvert an exception is thrown when either of the properties is missing. However, If I pass an empty string like this:

JsonConvert.DeserializeObject<MyObject>("")

null is returned but no exception is thrown. How can I configure MyObject or the deserializer so that a JsonException is thrown just like when any of the required properties are missing?

Upvotes: 15

Views: 17030

Answers (2)

Radenko Zec
Radenko Zec

Reputation: 7669

You need to decorate your class like this:

[JsonObject(ItemRequired = Required.Always)]
public class MyObject
{
}

Upvotes: 1

Eldar Dordzhiev
Eldar Dordzhiev

Reputation: 5135

Just check for null. It's an expected behavior, as there is no object defined in an empty string :)

var obj = JsonConvert.DeserializeObject<MyObject>("");
if (obj == null)
{
    throw new Exception();
}

Upvotes: 7

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