StackOverflow2013

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plurals

PO
primarykey
Id
11580279
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
1
CommunityOwnedDate
CreationDate
2012-07-20T13:24:16.567
FavoriteCount
0
LastActivityDate
2012-07-20T13:24:16.567
LastEditDate
LastEditorUserId
0
OwnerUserId
41071
ParentId
11579928
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2
Score
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LastEditorDisplayName
text
Body
First, I think you shouldn't base your logic on ids (unless you really have to). You should use references to the objects in the <code>SortedRecommendations</code> collection. Now, if you wanted to download only one file at a time, you could simply use <code>await</code>: <pre><code>for (int i = 0; i < SortedRecommendations.Count; i++) { string tempfilepath = filepath + SortedRecommendations[i].Aid + ".jpg"; if (File.Exists(tempfilepath)) continue; WebClient wc = new WebClient(); var recommendation = SortedRecommendations[i]; await wc.DownloadFileTaskAsync(new Uri(recommendation.Image.Replace("t.jpg", ".jpg")), tempfilepath); recommendation.Image = tempfilepath; } </code></pre> But, if you wanted to start all of the downloads at the same time, like your <code>DownloadFileAsync()</code> code does, you could use <code>ContinueWith()</code> instead. And you don't need user state, that's what closures are for: <pre><code>for (int i = 0; i < SortedRecommendations.Count; i++) { string tempfilepath = filepath + SortedRecommendations[i].Aid + ".jpg"; if (File.Exists(tempfilepath)) continue; WebClient wc = new WebClient(); var recommendation = SortedRecommendations[i]; var downloadTask = wc.DownloadFileTaskAsync(new Uri(recommendation.Image.Replace("t.jpg", ".jpg")), tempfilepath); var continuation = downloadTask.ContinueWith(t => recommendation.Image = tempfilepath); tasks.Add(continuation); } await Task.WhenAll(tasks); </code></pre> The best solution would probably be to download a limited number of files at once, not one or all of them. Doing that is more complicated and one solution would be to use <code>ActionBlock</code> from TPL Dataflow with <code>MaxDegreeOfParallelism</code> set.
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1. This table or related slice is empty.
PostParentId
1. POUserState using WebClient and TaskAsync download from Async CTP
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PostTypePostTypeId
1. PTAnswer
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1. This table or related slice is empty.
UserOwnerUserId
1. USsvick
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1. This table or related slice is empty.
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1. POUserState using WebClient and TaskAsync download from Async CTP
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1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
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CommentsPostId
1. COThanks! Didn't know about ContinueWith.!
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 USmartinyyyy

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