Newtonsoft Json Dll -

string json = @" 'store': 'book': [ 'title': 'The Hobbit' ] "; JObject obj = JObject.Parse(json); string title = obj["store"]["book"][0]["title"].ToString(); obj["store"]["book"][0]["price"] = 12.99; // Modify in place One of the most painful serialization problems is preserving derived types. Newtonsoft solves this with TypeNameHandling . By adding a "$type" property to the JSON, it can deserialize an interface or abstract class back into the correct concrete type.

public class UnixDateTimeConverter : JsonConverter<DateTime> newtonsoft json dll

Migration tools like System.Text.Json 's source generator can help, but many teams have simply decided: if it ain't broke, don't fix it. Newtonsoft.Json has had its share of CVEs. Most stem from using TypeNameHandling on untrusted input—a classic deserialization vulnerability that can lead to remote code execution. string json = @" 'store': 'book': [ 'title':

Install-Package Newtonsoft.Json The DLL itself will land in your project's packages folder or be referenced via the .NET runtime's shared framework (if using the Microsoft.NET.Sdk ). Newtonsoft.Json is the COBOL of JSON serialization—not because it's old and crusty, but because it’s everywhere , it works , and rewriting what it powers would be a colossal waste of time. Its API is the mental model for JSON in .NET that an entire generation of developers grew up on. Install-Package Newtonsoft

dotnet add package Newtonsoft.Json Or via Package Manager Console:

So pour one out for the DLL that refused to die. And then maybe add a reference to it, because your appsettings.json file still needs parsing. Have a Newtonsoft war story? A custom converter that saved your bacon? Share it in the comments below.