Entity Framework 6 - Knowledge Base (KB)

LinqKit System.InvalidCastException When Invoking method-provided expression on member property

Given a simple parent/child class structure. I want to use linqkit to apply a child lambda expression on the parent. I also want the Lambda expression to be provided by a utility method....public class Foo { public Bar Bar { get; set; } } public cl...

Howto use predicates in LINQ to Entities for Entity Framework objects

I'm using LINQ to Entities for Entity Framework objects in my Data Access Layer....My goal is to filter as much as I can from the database, without applying filtering logic to in-memory results....For that purpose Business Logic Layer passes a predicate ...

Strange Linq to Entities Behavior with AsExpandable()

Consider the following ...Person... entity:...public class Person { public int Id { get; set; } public string FirstName { get; set; } public string LastName { get; set; } } ...Using the following ...Expression... (constructed using ...Predicat...

Use PredicateBuilder in SelectMany LINQ to Entity Framework

It's the first time I write here on stackoverflow....I would like to use PredicateBuilder in a LINQ query with SelectMany....I enter my code...public async Task<List<Articolo>> OttieniElencoArticoliFiltratoComplessoAsync (ExpressionStarter<Articolo> p...