ADO.NET :: Linq To SQL Lazy Loading, Immediate Execution, ToArray()?
Jul 28, 2010
I am developing a website that has more and more LINQ queries. I have been keeping down the download size, optimizing the images, js, css and using HTTP Compression. I notice however, that now that I am using more LINQ queries and more complex queries, join and group joining queries, the 'waiting' time that the browser is doing is going up. The KB size of the page isn't any greater, but the page ultimately takes longer to load.
I have been reading up on LINQ and the behind the scenes of how it works. I have found that I need to use DataLoadOptions for the queries that join/group join to reduce the round trips to the database. I haven't had a chance to work on this yet, so if anyone has any great resources on this or tips, I'd appreciate it.
My main question about LINQ to SQL in this post is, if I have a bunch of queries throughout my site, in the masterpage, and the page itself, if I do not put .ToArray() at the end of the query, does that speed it up? If I leave ToArray() off of all the queries, do they then execute all at once when the page is loading instead of each time the page gets to that specific line to read and execute it?
I may be asking a dumb question, since I don't know a whole lot about the behind the scenes of LINQ yet, or the compiling of the page. I am using VWD 2010, so it does not have the SQL Profiler for me to test what I am asking.
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