I have a HashSet of Identity values that I need to use as the query values to return a ObjectResult from the Entity Framework
Here's the HashSet:
HashSet<int> officeIds = new HashSet<int>();
Here's the query that I'm trying to run more or less:
ObjectResult<FilingOffice> offices = ctx.FilingOffice.Where(office => office IN officeIds.ToList());
The "office => office IN officeIds.ToList()" part of the above is what I can't get to work and haven't found any samples on the web for returing objects given a list of primary keys.
ctx is the System.Data.Objects.ObjectContext
The examples others have given won't work in the Entity Framework today, because you can't mix client and serverside enumerations in LINQ 2 Entities.
Instead you need to build an OR expression, manually.
Hope this helps
I have had similar issues a lot of times, another Stack Overflow question with good information is: Most efficient way to get multiple entities by primary key?
I prefer to use:
var entities = db.Entities.WhereIn(x => x.Id, ids);