c# - 如何在没有任何模型或映射器的情况下将json转换为对象

Question

How to convert json to object in c#? Below is sample of json and some time it can be complex json. I don't want to use any model. and not using any mapper. Please suggest something-

{'firstName':'Ram','country':'India','email':'test@test.com'}

Json will be different every time like-

{'firstName':'Ram','lastName':'tho','country':'India','email':'test@test.com'}

{'firstName':'Ram','country':'India','state':'MP','city':'Bhp'}

Sample code will be appreciated :) Thanks

Answer 1

You can resort to using "json path" or property path notation if you construct a JObject from Newtonsoft based on that data.

Just don't complain about performance if you do.

Answer 2

I work with JSON and Web-based APIs regularly and will never use anything else than Newtonsoft in C# to handle JSON conversions, it's literally the best possible way to do anything with JSON in C# and without any headaches, it's the most popular C# NuGet package in the world with almost 1 billion downloads, works in ALL .NET versions basically.

Here's one of the simplest examples

string json_string = @"{
                  Firstname: ""Jane"",
                  Lastname: ""Doe"",
                  Age: 36,
                  IsEmployed: true,
                  IsMarried: true,
                  Children: 4
              }";
              
var person = Newtonsoft.Json.JsonConvert.DeserializeObject<dynamic>(json_string);

Console.WriteLine(person.Forename);
Console.WriteLine(person.Lastname);
Console.WriteLine(person.Age);
Console.WriteLine(person.IsEmployed);
Console.WriteLine(person.IsMarried);
Console.WriteLine(person.Children);

It generates objects on the fly, no matter the structure! Other solutions don't work in all .NET versions.

I wrote a simple, easy-to-follow article here https://turmanauli.medium.com/a-complete-guide-for-serializing-json-to-dynamic-objects-on-the-fly-in-c-7ab4799f648d about how to install and use Newtonsoft via NuGet Package Manager in your Visual Studio project.