Coding⏱️ 2 min read📅 2026-05-31

How to Fix: Make a custom .NET Exception serializable

Serialize custom .NET Exception with non-serializable objects

Quick Answer: Use the ISerializable interface and implement a custom serialization method to serialize custom objects within exceptions.

To make a custom .NET Exception serializable, you need to implement the ISerializable interface in your custom exception class.

🛠️ Step-by-Step Verified Fixes

Method 1: Implementing ISerializable

  1. Step 1: Add the [Serializable] attribute to your custom exception class.

Method 2: Implementing ISerializable with a Constructor

  1. Step 1: Create a constructor for your custom exception class that accepts the required parameters.

🎯 Final Words

By implementing ISerializable, you can ensure that your custom exceptions are properly serialized and deserialized in .NET applications.

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