CODEWITHSUNDEEP
c#exception
Sebastian Krysmanski
Sebastian Krysmanski

Reputation: 8394

Can Exception.Data be null in C#?

For years I've had the faint memory that in C# the property Exception.Data can be null for some very specific exceptions (but I can't remember which). I've even built some extension methods to help around this problem. However, I just tried to find some documentation on this problem but couldn't find any.

Could it be that this was a thing some years ago (in an older .NET Framework version) but is no longer?

Upvotes: 2

Views: 404

Answers (1)

Sebastian Krysmanski
Sebastian Krysmanski

Reputation: 8394

I managed to find the documentation I was remembering. It's in the ".NET Framework 4" offline help in Visual Studio (2017). Here the documentation for Exception.Data contains an additional note:

The ExecutionEngineException, OutOfMemoryException, StackOverflowException and ThreadAbortException classes always return null for the value of the Data property.

Interestingly the online help for Exception.Data is missing this note - but otherwise its contents seem to be the same as the offline help.

Update: I filed an issue for this inconsistency: https://github.com/dotnet/dotnet-api-docs/issues/4045

Upvotes: 4

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