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Profile Entity Framework queries?

Posted on 2010-09-20
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Last Modified: 2013-11-11
Hi!
I want to see SQL request generated by LINQ. I've seen that some people use a "datacontext.Log = Console.Output", but I don't have a .Log on my datacontext.

So, how to do this? For me if there is an equivalent to Console.Output, it resolves my problem

(I'm using entity framework 4.0 and POCO object).

Thank you for the help
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Question by:Nargzul
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LVL 64

Expert Comment

by:Fernando Soto
ID: 33716488
Hi Nargzul;

In the Entity Framework there is no Log function in the ObjectContext as there is in Linq to SQL in the DataContext. You have two options that I know of, first is to use SQL Profiler on the server and look at the SQL command comming into the server, Second is to build a EFTracingProvider, the two links below is the EFTracingProvider lib code and the second link is a small sample showing how to implement one.

Tracing and Caching Provider Wrappers for Entity Framework
http://code.msdn.microsoft.com/EFProviderWrappers

Logging SQL statements in Entity Framework/Code First
http://jkowalski.com/2010/04/23/logging-sql-statements-in-entity-frameworkcode-first/

Fernando
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LVL 1

Author Comment

by:Nargzul
ID: 33716560
It's only to debug a little thing, I don't want to make a big devlopment for this. How can I do this SQL Profiler? I've tried but I didn't found my requests
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Accepted Solution

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Fernando Soto earned 1500 total points
ID: 33716994
I am no expert on SQL Server Profiler but found this on the web.

Using SQL Server Profiler
http://msdn.microsoft.com/en-us/library/ms187929.aspx

look at this link on the page:
Viewing and Analyzing Traces with SQL Server Profiler
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LVL 8

Expert Comment

by:cubaman_24
ID: 33723493
Hello:
I've been using Entity Framework Profiler. I shows you the statements executed against your DDBB, even if it's Sql CE, and the only one I knows can do it. It also give you hints about how to optimize certain expensive queries and more features. You can try it for 30 days, download at:
http://efprof.com/
Best regards
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LVL 1

Author Closing Comment

by:Nargzul
ID: 33838979
I've a lot of other request, so it's not very adequate
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