Linq To SQL: Retain list order when using .Contains
- by rockinthesixstring
I'm using Lucene.net to build a MyListOfIds As List(Of Integer) which I then pass on to my Linq service. I then search the database as follows
Return _EventRepository.Read().Where(Function(e) MyListOfIds.Contains(e.ID)).ToList
Now I know that Lucene is already ordering MyListOfIds based on the weight it gave each term. What sucks is that Linq is losing that order in it's SQL search.
My Question: How can I retain that sort order when building my Lambda expression?
I tried using LINQPad to see how the query is being built, but because I had to declare a variable LINQPad didn't show me the resultant SQL :-(
Here's what I tried in LINQPad
Dim i As New List(Of Integer)
i.Add(1)
i.Add(100)
i.Add(15)
i.Add(3)
i.Add(123)
Dim r = (From e In Events
Where i.Contains(e.ID)
Select e)
note: my example is in VB.NET, but I don't mind if responses are in C#
