What’s the difference(s) between .ToList(), .AsEnumerable(), AsQueryable()?
I know some differences of LINQ to Entities and LINQ to Objects which the first implements IQueryable and the second implements IEnumerable and … Read more
entity-framework
The relationship could not be changed because one or more of the foreign-key properties is non-nullable
I am getting this error when I GetById() on an entity and then set the collection of child entities to my new list … Read more
How to pass parameters to the DbContext.Database.ExecuteSqlCommand method?
Let’s just suppose I have a valid need for directly executing a sql command in Entity Framework. I am having trouble figuring out … Read more
Entity Framework 6 Code first Default value
is there “elegant” way to give specific property a default value ? Maybe by DataAnnotations, something like : [DefaultValue(“true”)] public bool Active { … Read more
Entity Framework: One Database, Multiple DbContexts. Is this a bad idea? [closed]
Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be … Read more
Unique Key constraints for multiple columns in Entity Framework
I’m using Entity Framework 5.0 Code First; public class Entity { [Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)] public string EntityId { get; set;} public int FirstColumn { … Read more
Reset Entity-Framework Migrations
I’ve mucked up my migrations, I used IgnoreChanges on the initial migration, but now I want to delete all my migrations and start … Read more
Entity Framework: “Store update, insert, or delete statement affected an unexpected number of rows (0).” [closed]
Closed. This question needs debugging details. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic … Read more
EF Migrations: Rollback last applied migration?
This looks like a really common task, but I can’t find an easy way to do it. I want to undo the last … Read more
No Entity Framework provider found for the ADO.NET provider with invariant name ‘System.Data.SqlClient’
After downloading the EF6 by nuget and try to run my project, it returns the following error: No Entity Framework provider found for … Read more