Скачать или смотреть How to Deserialize JSON Array of Arrays into a C# Class

Learn the correct way to deserialize a JSON array of arrays into C# objects using Json.NET, and handle the absence of property names effectively.
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This video is based on the question https://stackoverflow.com/q/62663702/ asked by the user 'Rasik' ( https://stackoverflow.com/u/2268543/ ) and on the answer https://stackoverflow.com/a/62664091/ provided by the user 'Pavel Anikhouski' ( https://stackoverflow.com/u/4728685/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Deserializing JSON Array of Arrays into C# Class: A Step-by-Step Guide

When working with data in C# , it's common to encounter JSON formatted data. A frequent challenge developers face is deserializing JSON into a structured format like a C# class. In this guide, we will explore how to efficiently deserialize a JSON array of arrays into a C# class, using an example of a Person class. We'll break down the approach clearly for easy understanding.

Understanding the Problem

In our scenario, we have a class defined as follows:

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You might have a JSON response that looks like this:

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Our goal is to deserialize this JSON string into instances of the Person class using C# . However, as we can see, the JSON does not contain any property names associated with the values. This presents a challenge when attempting to directly convert the JSON into a Person class using standard deserialization methods.

The Solution: Step-by-Step Guide

Step 1: Deserialize the JSON

Instead of trying to directly deserialize the JSON into a collection of Person objects, we first need to deserialize it into a sequence of collections—because the JSON contains arrays without property names. Here's how to do that:

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This line of code will convert the JSON array into an IEnumerable of string arrays. Each array element corresponds to a Person object.

Step 2: Map to Person Class

Once we have deserialized the JSON into an IEnumerable<string[]>, the next step is to map these arrays to our Person class. We can achieve this using LINQ in a succinct manner:

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Complete Code Example

Combining the aforementioned steps, here is how the complete code would look:

[[See Video to Reveal this Text or Code Snippet]]

Important Notes

Value Indexing: It is important to maintain the correct order of attributes while parsing the values into the properties of the Person class.

Error Handling: If the structure of your JSON might change or if there are potential errors in the data, consider adding appropriate error handling while mapping to avoid exceptions.

Conclusion

Deserializing a JSON array of arrays into C# objects may initially seem daunting, especially when property names are absent. However, by breaking down the process into manageable steps—first deserializing into a collection of arrays and then mapping those arrays to your class—you can overcome this challenge efficiently.

Implement these strategies in your C# projects to better handle JSON data, and leverage the power of Json.NET for seamless data manipulation. Happy coding!