I have a dictionary, and I want to read it from one thread, while possibly
modifying it from another thread. In the event when one thread modifies it
while another thread is enumerating it, I actually *want* the change to occur,
and I want the enumerating thread to be aware a change has occurred.
The best way I know is to let the exception occur, and simply handle the
exception.
Problem is, the exception type is InvalidOperationException, which is pretty
generic. So I need to handle InvalidOperationException, and look inside it, to
see if "Collection was modified" is the cause of the exception. Right now, the
only way I know to do it is like this:
catch (InvalidOperationException e)
{
if (e.Message == "Collection was modified; enumeration
operation may not execute.")
This seems a little kludgy... First of all, can I be guaranteed the string
will remain exactly the same, across platforms, and different versions of .Net
and mono? Second of all, it's a string comparison. If it works, I don't mind
it. It will happen rarely enough that I'm willing to pay the performance of
string comparisons. The important goal is to accurately and reliably catch the
right exception, on different platforms.
Thanks for suggestions...
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