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c# Programming Glossary: db.savechangesInvalidOperationException when calling SaveChanges in .NET Entity framework http://stackoverflow.com/questions/1008582/invalidoperationexception-when-calling-savechanges-in-net-entity-framework Movie Name d.Name Path dir.FullName db.AddToMovies movie db.SaveChanges When I do this I get an exception at db.SaveChanges that read... movie db.SaveChanges When I do this I get an exception at db.SaveChanges that read. The changes to the database were committed successfully..
How to edit multiple models in a single Razor View http://stackoverflow.com/questions/10720756/how-to-edit-multiple-models-in-a-single-razor-view db.Entry album .State EntityState.Modified db.SaveChanges return RedirectToAction Index ViewBag.GenreId new SelectList..
Entity Framework: Duplicate Records in Many-to-Many relationship http://stackoverflow.com/questions/11646299/entity-framework-duplicate-records-in-many-to-many-relationship db.Clubs.Add club2 db.Clubs.Add club3 int recordsAffected db.SaveChanges public static Club GetClubs string clubName string connectionstring.. db.Persons.Add p1 db.Persons.Add p2 int recordsAffected db.SaveChanges Domain public class Person public int PersonId get set public.. db.Clubs.Add club2 db.Clubs.Add club3 int recordsAffected db.SaveChanges public static Club GetClubs string clubName NerdDinners db var..
Entity framework, problems updating related objects http://stackoverflow.com/questions/13236116/entity-framework-problems-updating-related-objects
Entity Framework 5 Updating a Record http://stackoverflow.com/questions/15336248/entity-framework-5-updating-a-record original.ASPNetUserId updatedUser.ASPNetUserId db.SaveChanges Pros Can specify which properties change Views don't need to.. db.Entry original .CurrentValues.SetValues updatedUser db.SaveChanges Pros Only modified properties are sent to database Cons Views.. db.Entry updatedUser .State EntityState.Modified db.SaveChanges Pros 1 x query on database to update Cons Can't specify which..
Entity Framework giving exception : “The underlying provider failed on Open.” http://stackoverflow.com/questions/4987787/entity-framework-giving-exception-the-underlying-provider-failed-on-open TestMethod public void test1 db.Books.Add new Book ... db.SaveChanges TestMethod public void test2 db.Books.Add new Book ... db.SaveChanges.. TestMethod public void test2 db.Books.Add new Book ... db.SaveChanges TestCleanup public void Clean db.Dispose Here's an excerpt..
EF 4.1 and “Collection was modified; enumeration operation may not execute.” exception http://stackoverflow.com/questions/7536459/ef-4-1-and-collection-was-modified-enumeration-operation-may-not-execute-exc Employee creator new Employee Bob db.Employees.Add creator db.SaveChanges Employer employer new Employer employer creator db.Employers.Add.. new Employer employer creator db.Employers.Add employer db.SaveChanges I know I can call SaveChanges once and it actually works in..
MVC AddObject Create multiple records http://stackoverflow.com/questions/8349714/mvc-addobject-create-multiple-records item.LastName db.tblRec.AddObject invmodel.tblrec db.SaveChanges c# .net entity framework list share improve this question.. tblRec.LastName item.LastName db.tblRec.AddObject tblRec db.SaveChanges Why Because your code is repeatedly adding the same instance..
Strongly-Typed ASP.NET MVC with Entity Framework http://stackoverflow.com/questions/899734/strongly-typed-asp-net-mvc-with-entity-framework Model.EntityKey.EntitySetName Model db.SaveChanges return RedirectToAction Index ASP.NET MVC creates the object.. Model.EntityKey.EntitySetName Model db.SaveChanges return RedirectToAction Index The ObjectStateEntry also allows..
Is there any benefit to implementing IDisposable on classes which do not have resources? http://stackoverflow.com/questions/9472304/is-there-any-benefit-to-implementing-idisposable-on-classes-which-do-not-have-re Box b using dataContext db new dataContext db.Boxes.add b db.SaveChanges return b.id Will there be any benefit in memory use when using..
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