user1585345 user1585345 - 1 year ago 78
C# Question

Unable to define an extension method that recurses

I would like to define an extension method that recurses into a nested structure of, you guessed it, exceptions. This is what I would like to do...

class Utils
public static string TellMeEverything(this Exception ex)
return ex.InnerException?.TellMeEverything() + ex.Message + ex.StackTrace;

But this generates a compiler error
'Exception' does not contain a definition for 'TellMeEverything' and no extension method 'TellMeEverything' accepting a first argument of type 'Exception' could be found (are you missing a using directive or an assembly reference?)

Could this be considered a compiler bug?

Answer Source

Your class utils should also be public static in order for it to be discoverable as an extension to System.Exception

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