Possible bug in [RelayCommand] async task #355
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DarthMazut
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Hello,
when I mark my command with
[RelayCommand]
and useasync Task
signature then when synchronouse part of code throws exception this exception is swallow and another criptic exception is thrown instead. Let me give you an excample:In my view I bind Button's command to my VM command, like so:
In my VM I do the following:
this simulates any method that has some async call, but before awaiting it, an exception has been thrown by prior part of code.
In such case, after pressing button I receive:
Unhandled exception at 0x76B757B1 (combase.dll) in TestApp1.exe: 0xC000027B: Wystąpił wewnętrzny wyjątek aplikacji (parameters: 0x16B993B0, 0x00000001).
and eventually this:Exception thrown at 0x00DBE538 in TestApp1.exe: 0xC0000005: Access violation executing location 0x00DBE538.
This happens only when my method signature is
async Task
, when changing it toasync void
the proper exception is thrown.My question is whether this is expected or it's a bug? Should I use
async void
? I thoughasync Task
is recommended?This is obviously problematic because if I throw meaningfull exception from my code I'd like to see those instead of this
Access violation
internal stuff.Beta Was this translation helpful? Give feedback.
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