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    <p>For displaying the user's name if you use membership and you don't want to include the aspnet_Users in your dbml:</p> <pre><code>... LastPostUserId = posts.OrderByDescending(p=&gt;p.PostId).Take(1).Select(p=&gt; Membership.GetUser(p.UserId)) ... </code></pre> <p>Another change to make your posted sample a bit better is to add the orderbydescending in the posts variable: Then you can drop the 4 times repeated OrderByDescending from the select clause:</p> <pre><code>from forum in Forums let posts = ForumPosts.Where(p =&gt; p.ForumThreads.ForumId.Equals(forum.ForumId)).OrderByDescending(p=&gt;p.PostId) select new { Forum = forum.Title, Description = forum.Description, Topics = forum.ForumThreads.Count(), Posts = posts.Count(), LastPostId = posts.Take(1).Select(p=&gt;p.PostId), LastPostThreadId = posts.Take(1).Select(p=&gt;p.ThreadId), LastPostUserId = posts.Take(1).Select(p=&gt;p.UserId), LastPostTime = posts.Take(1).Select(p=&gt;p.CreateDate) } </code></pre> <p>Or even cleaner:</p> <pre><code>from forum in Forums let posts = ForumPosts.Where(p =&gt; p.ForumThreads.ForumId.Equals(forum.ForumId)) let lastPost = posts.OrderByDescending(p=&gt;p.PostId).Take(1) select new { Forum = forum.Title, Description = forum.Description, Topics = forum.ForumThreads.Count(), Posts = posts.Count(), LastPostId = lastPost.PostId, LastPostThreadId = lastPost.ThreadId, LastPostUserId = lastPost.UserId, LastPostUserName = Membership.GetUser(lastPost.UserId), LastPostTime = lastPost.CreateDate } </code></pre> <p>Test this code when there are no last posts tho, I think it might throw an error if Take(1) is null..</p>
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    1. COTake(1) doesn't throw an error if it's null. But however it doesn't seem possible to declare variables as LastPostThreadId = lastPost.ThreadId - I have to use .Select() ? Another thing.. is it possible to return values as strongly-typed instead of IOrderedQueryable<DateTime> and so on?
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    2. COAh yes, that's because Take(1) could as well be Take(100), so the system doesn't know that you are returning a single ForumPost. That's why you should use .FirstOrDefault() instead of .Take(1). That will let you use lastPost.CreateDate and will return it as a DateTime instead of an IOrderedQueryable<DateTime>.
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      1. USThomas Stock
    3. COYou will have to check on null anyway. Easiest way is: LastPostTime = (lastPost != null ? lastPost.CreateDate : null)
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