StackOverflow2013

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plurals

PO
primarykey
Id
3325393
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2010-07-24T14:03:52.880
FavoriteCount
0
LastActivityDate
2010-07-24T14:03:52.880
LastEditDate
LastEditorUserId
0
OwnerUserId
13249
ParentId
3325342
PostTypeId
2
Score
4
ViewCount
0
LastEditorDisplayName
text
Body
Since you're using .Net 4.0 you can use a few new constructs available here, you can replace this: <pre><code>foreach(string s in liste) new Thread(x => SendMail(s)).Start(); </code></pre> With a <a href="http://msdn.microsoft.com/en-us/library/system.threading.tasks.parallel.foreach.aspx" rel="nofollow noreferrer"><code>Parallel.ForEach</code></a>: <pre><code>Parallel.ForEach(liste, SendMail); </code></pre> Or, inappropriate for the case but works the <a href="http://msdn.microsoft.com/en-us/library/dd383744.aspx" rel="nofollow noreferrer"><code>.ForAll()</code></a> extension: <pre><code>liste.AsParallel().ForAll(SendMail); </code></pre> Someone correct me here, but what I think is happening is that if a Thread takes any time to start up it's referencing a <code>s</code> from the foreach that doesn't belong to it. The thread it passing a the value of <code>s</code> into SendMain, but it's getting that value when it's ready for it...and that may be after the <code>foreach</code> loop has already moved on, meaning that the string that <code>s</code> points to has changed. For example: If 2 threads start, one slow and one fast...the first slow one might get an <code>s</code> from a later <code>foreach()</code> iteration, and the faster one may get the correct <code>s</code> for the current loop. That means 2 threads got the same <code>s</code> reference, and the first thread copied the wrong value to pass into <code>SendMail()</code>.
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Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POProblem sending mails with multiple threads
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 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USNick Craver
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PostLinksPostIdRelatedPostId
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PostsAcceptedAnswerId
1. POProblem sending mails with multiple threads
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 PTQuestion
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
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 VTAcceptedByOriginator
2. VO
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 VTUpMod
3. VO
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 This table or related slice is empty.
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CommentsPostId
1. This table or related slice is empty.

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