Subject: Create MailMessages in Parallel.ForEach
Date: 2010-07-30 15:25:03
From: Christian Jursik
Source: create-mailmessages-parallel-foreach


I thought it would implement a dictionary because of the line "System.Collections.Generic.Dictionary`2.Insert" in the stacktrace.
There cant be a duplicate address in from or to because both have only one address. i think, the problem isnt linq but the fact that parallel.foreach uses 2 or more threads parallel (depending on how many cpus or cpu-cores exist on the machine).
What i could see is that when i remove the adding of the from-address (which is the same for each mail but only added once for each mail) i dont get an error.

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