Troubleshooting Json.Net Serialization: Dealing with Unexpected Characters

  1. Introduction
  2. Unexpected Characters in JSON
  3. Troubleshooting Unexpected Character Issues
    1. Step 1: Identify the Problematic Characters
    2. Step 2: Escape the Problematic Characters
    3. Step 3: Use a Custom JsonConverter
    4. Step 4: Update the JSON Data at the Source
  4. Conclusion


Json.Net is a popular open-source library used for serializing and deserializing JSON data in .NET applications. However, sometimes unexpected characters can cause issues with the serialization process. In this article, we will discuss how to troubleshoot unexpected character issues in Json.Net serialization.

Unexpected Characters in JSON

JSON data is expected to be in a specific format, with each field containing a key and a value separated by a colon, and each field separated by a comma. If unexpected characters are present in the JSON data, the serialization process may fail.

Some of the most common unexpected characters include:

  • Control characters such as tabs or line breaks
  • Non-ASCII characters such as accents or umlauts
  • Invalid escape sequences

Troubleshooting Unexpected Character Issues

If you encounter unexpected character issues during Json.Net serialization, there are several steps you can take to troubleshoot the problem.

Step 1: Identify the Problematic Characters

Start by identifying the specific characters causing the issue. You can do this by examining the JSON data and looking for any unexpected characters. You may also want to try decoding the JSON data using a tool like a JSON decoder to see if any errors are reported.

Step 2: Escape the Problematic Characters

Once you have identified the problematic characters, you can try escaping them using escape sequences. For example, you can replace tabs with "t" and line breaks with "n". You can also use Unicode escape sequences to represent non-ASCII characters.

Step 3: Use a Custom JsonConverter

If escaping the problematic characters does not work, you can try using a custom JsonConverter to handle the serialization process. A custom JsonConverter allows you to override the default serialization behavior and provide your own implementation.

Step 4: Update the JSON Data at the Source

If none of the above steps work, you may need to update the JSON data at the source to remove the problematic characters. This may involve working with the data provider to ensure that the data is in the correct format.


Unexpected character issues can be a common problem when working with Json.Net serialization. By following the troubleshooting steps outlined in this article, you can identify and address these issues to ensure that your serialization process runs smoothly. Remember to always test your code thoroughly to ensure that it is working as expected.

Click to rate this post!
[Total: 0 Average: 0]

Related posts

Leave a Reply

Your email address will not be published. Required fields are marked *

Go up

Below we inform you of the use we make of the data we collect while browsing our pages. You can change your preferences at any time by accessing the link to the Privacy Area that you will find at the bottom of our main page. More Information