I'm using Linq/EF4.1 to pull some results from a database and would like to limit the results to the (X) most recent results. Where X is a number set by the user.
Is there a way to do this?
I'm currently passing them back as a
List if this will help with limiting the result set. While I can limit this by looping until I hit X I'd just assume not pass the extra data around.
Just in case it is relevant... C# MVC3 project running from a SQL Server database.
int numberOfrecords=10; // read from user listOfItems.OrderByDescending(x => x.CreatedDate).Take(numberOfrecords)
listOfItems is List of your entity objects and
CreatedDate is a field which has the date created value (used here to do the Order by descending to get recent items).
Take() Function returns a specified number of contiguous elements from the start of a sequence.
results = results.OrderByDescending(x=>x.Date).Take(10);
The OrderByDescending will sort items by your date/time property (or w/e logic you want to use to get most recent) and Take will limit to first x items (first being most recent, thanks to the ordering).
Edit: To return some rows not starting at the first row, use
results = results.OrderByDescending(x=>x.Date).Skip(50).Take(10);