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Unhandled handling when deserializing JSON with custom Dictionary in C#

👀 Views: 0 💬 Answers: 1 📅 Created: 2025-07-08
json serialization dictionary error-handling C#

I've looked through the documentation and I'm still confused about I'm relatively new to this, so bear with me... I'm working with an scenario when trying to deserialize JSON into a custom class that contains a Dictionary. The JSON structure is straightforward, but I'm getting an `InvalidCastException` when deserializing. Here’s the class structure I’m working with: ```csharp public class MyData { public Dictionary<string, int> Values { get; set; } } ``` And here’s the JSON I’m trying to deserialize: ```json { "Values": { "Key1": 1, "Key2": 2, "Key3": 3 } } ``` I am using `Json.NET` (Newtonsoft.Json) version 13.0.1, and the deserialization code looks like this: ```csharp var json = "{ \"Values\": { \"Key1\": 1, \"Key2\": 2, \"Key3\": 3 } }"; var myData = JsonConvert.DeserializeObject<MyData>(json); ``` However, I receive an `InvalidCastException` stating that the JSON value is not compatible with the expected type. I have tried using `JsonSerializerSettings` to ignore null values and to ensure that case sensitivity is not an scenario, but the exception continues. I’ve also checked if the JSON string is a valid format using online validators, and it appears to be correct. I’m not sure what’s going wrong, so any insights or suggestions would be greatly appreciated! My development environment is Ubuntu. Any ideas what could be causing this? Am I missing something obvious?