How to include only some items of internal list with LINQ to Entities

Which book is the best for learning Linq, especially Linq to Entities?

In the meanwhile, until a decent book appears, try this: ...http://weblogs.asp.net/zeeshanhirani/archive/2008/12/05/my-christmas-present-to-the-entity-framework-community.aspx

Entity Framework options to map list of strings or list of int (List<string>)

I want to use EF to store an object that has a List of primitives....public class MyObject { public int Id {get;set;} public virtual IList<int> Numbers {get;set;} } ...Although I am aware of this, I would still want to learn about potential remedies....I can think of two solutions, which are:...1....Make a fake item.... with an Id and an in...

Using Linq, get all items from list that are in another List<int>

Your code is functional, however it will produce a list of anonymous objects rather than strings....rather than utilizing...(a => new { a.Title }... , you just utilize...a => a.Title... if you're simply interested in the title:...var myList = db.Items.Where(item => idsOnly.Contains(item.ID.Value)) .Select(a => a.Title).ToList()...

Find all items whose collection property contains items in another list

You are referring to the ...Any... technique of C# Linq....The ...Any... In your situation, the condition is if another collection contains one of the items. The technique basically asserts if Any of the elements within that collection (Enumerable) satisfy the criterion....ex....public bool HasPeople(ICollection<Person> original, ICollection<Person...

Linq - How to select items from a list that contains only items of another list?

This gives the items that are in all states....stateList... I believe that's what you require:...Items.Where(x => x.TestList.All(s => stateList.Contains(s.State)));

Check if list contains item from other list in EntityFramework

I have an entity called Person that is linked to a list of places. From a list of locations, I need to run a query on the people table to retrieve all of the people who have at least one location (criteria). The following is effective but very ineffective:...var searchIds = new List<int>{1,2,3,4,5}; var result = persons.Where(p => p.Locations.Any(l...

Filtering include items in LINQ and Entity Framework

Although a collection contained via cannot be filtered...Include... , you may employ...Select... and transform that collection into one that has been filtered....var rootCategoryItem = DatabaseContext.Categories .OrderBy(c => c.CategoryOrder) .Select(c => new Category() { SubCategories = c.SubCategories.Where(sub => !sub.Deleted...

C# Linq efficient way to count items on a List on the fly

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asp.net mvc Join two tables to a single list item in html unordered list

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Linq return parent objects that have child items matching ALL items in separate list

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