Скачать или смотреть How to Unserialize JSON String in C#

Learn how to unserialize JSON strings in C# using Json.NET and JObject. This guide provides practical steps and example code for effective JSON handling.
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This video is based on the question https://stackoverflow.com/q/62626940/ asked by the user 'Chris' ( https://stackoverflow.com/u/3107652/ ) and on the answer https://stackoverflow.com/a/62627197/ provided by the user 'Chris' ( https://stackoverflow.com/u/3107652/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Unserialize JSON String in C# : A Step-by-Step Guide

Working with JSON data in C# can lead to various challenges, especially when you need to manipulate or extract data from JSON strings. One common problem developers face is how to unserialize a JSON string correctly. In this guide, we’ll take a closer look at how to solve this issue, ensuring that your JSON manipulation is smooth and efficient.

The Problem: Unserializing JSON Strings

In the example provided, the objective was to convert a JSON string within a NameValueCollection so it could be serialized properly. Here’s the starting JSON string:

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

When attempting to serialize a dictionary containing this JSON string along with a normal string, the output was more complicated than desired:

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

Instead, the desired output was:

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

The Solution: Using JObject to Parse JSON

To achieve the desired format, we can utilize the JObject.Parse() method from the Newtonsoft.Json library (also known as Json.NET). This method allows us to parse the JSON string and retrieve nested values more easily.

Step-by-Step Breakdown

Install Newtonsoft.Json:
Make sure you have the Newtonsoft.Json package installed in your project. If not, you can add it via NuGet Package Manager.

Parsing the JSON String:
Use JObject.Parse() to convert your JSON string into a JObject. This will allow you to access the values directly.

Extract the Necessary Values:
Retrieve the required data from the parsed JSON and store it in a new collection.

Serialize the Collection:
Finally, serialize the updated dictionary to achieve the desired JSON structure.

Example Code

Here's how the code will look after implementing the solution:

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

Output Result

After running the above code, you will now get the correct output:

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

Conclusion

Understanding how to properly unserialize JSON strings in C# is essential for any developer working with data interchange formats. By following the steps outlined in this guide and utilizing the functionalities of Json.NET, you can simplify your data handling tasks and ensure your JSON strings are formatted correctly.

If you encounter any specific challenges while working with JSON in your C# projects, feel free to reach out for assistance!