The supported way is to use the JsonProperty attribute on the class properties that you want to set the order for. Read the JsonPropertyAttribute order documentation for more information. Pass the JsonProperty an Order value and the serializer will take care of the rest. [JsonProperty(Order = 1)] This is very similar to the DataMember(Order = … Read more
There are actually several fairly simple approaches you can use to achieve the result you want. Let’s assume, for example, that you have your classes currently defined like this: class Config { public Fizz ObsoleteSetting { get; set; } public Bang ReplacementSetting { get; set; } } enum Fizz { Alpha, Beta, Gamma } class … Read more
@SamualDavis provided a great solution in a related question, which I’ll summarize here. If you have to deserialize a JSON stream into a concrete class that has interface properties, you can include the concrete classes as parameters to a constructor for the class! The NewtonSoft deserializer is smart enough to figure out that it needs … Read more
Json.Net prefers to use the default (parameterless) constructor on an object if there is one. If there are multiple constructors and you want Json.Net to use a non-default one, then you can add the [JsonConstructor] attribute to the constructor that you want Json.Net to call. [JsonConstructor] public Result(int? code, string format, Dictionary<string, string> details = … Read more
I just had the same problem with Parent/Child collections and found that post which has solved my case. I Only wanted to show the List of parent collection items and didn’t need any of the child data, therefore i used the following and it worked fine: JsonConvert.SerializeObject(ResultGroups, Formatting.None, new JsonSerializerSettings() { ReferenceLoopHandling = ReferenceLoopHandling.Ignore }); … Read more
The current version of Json.net does not allow you to use the accepted answer code. A current alternative is: public static object DeserializeFromStream(Stream stream) { var serializer = new JsonSerializer(); using (var sr = new StreamReader(stream)) using (var jsonTextReader = new JsonTextReader(sr)) { return serializer.Deserialize(jsonTextReader); } } Documentation: Deserialize JSON from a file stream
You are on the right track. Since you said you can’t modify the global settings, then the next best thing is to apply the JsonConverter attribute on an as-needed basis, as you suggested. It turns out Json.Net already has a built-in IsoDateTimeConverter that lets you specify the date format. Unfortunately, you can’t set the format … Read more
As part of ASP.NET Core 3.0, the team moved away from including Json.NET by default. You can read more about that in general in the announcement on breaking changes to Microsoft.AspNetCore.App. Instead of Json.NET, ASP.NET Core 3.0 and .NET Core 3.0 include a different JSON API that focuses a bit more on performance. You can … Read more
Update 2020: It’s been 7 years since I wrote this answer. It still seems to be getting a lot of attention. In 2013 Newtonsoft Json.Net was THE answer to this problem. Now it’s still a good answer to this problem but it’s no longer the the only viable option. To add some up-to-date caveats to … Read more
Through Code: Your best bet is to use parse inside a try-catch and catch exception in case of failed parsing. (I am not aware of any TryParse method). (Using JSON.Net) Simplest way would be to Parse the string using JToken.Parse, and also to check if the string starts with { or [ and ends with … Read more