When does Entity Framework open and close Database Connections?
.net-3.5 connection entity-framework
Question
When I instance my "Entities" object in Entity Framework, and make a couple of queries using that Entities object, what happens to connections?
- Does it open a connection when I instance the object, and close it when I dispose of it?
- Or does it open and close a connection for each single query I execute?
In either case, is it possible to change it so that it does the other thing?
Accepted Answer
Basically it opens when a request is called and closes once the results have been disposed or consumed. You can manually open/close or use the same connection using the object context...
This article has a more complete explanation - http://msdn.microsoft.com/en-us/library/bb738582.aspx
Here is the How To on using an entity Connection- the http://msdn.microsoft.com/en-us/library/bb738461.aspx
Popular Answer
The behaviour changed somewhat in EF6, allowing you to pass in open connections or to open the EF connection yourself later. Check out https://msdn.microsoft.com/en-us/library/dn456849(v=vs.113).aspx
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