System.Linq throwing AppKitThreadAccessException

GillesDignard · January 2016

This is happening while developing for Mac so I'm posting it here, though I suspect it may be a wider issue.

in an async method that gets passed an IEnumerable if I attempt to do a .Count() on it, I get an

AppKitThreadAccessException: AppKit Consistency error: you are calling a method that can only be invoked from the UI thread

exception.

Which I find baffling. Anyone know what is going on?

GillesDignard · January 2016

n/m

Problem with deferred execution.

The UI thread was passing in a deferred enumerator and things obviously went south once it began to iterate in the async thread.

GillesDignard · January 2016

n/m

Problem with deferred execution.

The UI thread was passing in a deferred enumerator and things obviously went south once it began to iterate in the async thread.

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