WebAug 9, 2024 · Entity Framework Core: DbContextOptionsBuilder does not contain a definition for 'usesqlserver' and no extension method 'usesqlserver' 0 Updating connected entities with one-to-many relationships in entity framework core WebSep 10, 2015 · How to Update/Edit multiple records using Entity Framework in ASP.NET MVC. foreach (var Product in Products) { Product.Price = Price; db.Entry (Product).State = EntityState.Modified; db.SaveChanges (); } Store update, insert, or delete statement affected an unexpected number of rows (0). Entities may have been modified …
Entity Framework 6.0 - Microsoft Q&A
WebApr 1, 2016 · That's because you executed a Find() that loaded the record from the database into the entity cache. Then you assigned a new object and attached it to the context, creating a new entry with the same key (order.ID). When you hit SaveChanges(), EF rightfully complained about the two entries with the same key. – WebNov 2, 2024 · I am trying to figure out if there is a way to update multiple rows at once with Entity. For now I am using Linq2Sql SubmitChanges which will perform an update row by row: c.PROPERTYONE = valueOne; c.PROPERTYTWO = valueTwo; ... dataContext.SubmitChanges(); In my case, valueOne and valueTwo will most likely … horrible mother in law christmas stories
Update Multiple Rows in Entity Framework from one id
WebOct 10, 2024 · 171. To update an entity with Entity Framework Core, this is the logical process: Create instance for DbContext class. Retrieve entity by key. Make changes on entity's properties. Save changes. Update () method in DbContext: Begins tracking the given entity in the Modified state such that it will be updated in the database when … WebJun 17, 2016 · With my current code here it only seems to update my navigation property. For instance if the "Score" in my first class changes it will not be updated. But if anything in the second class changes it will update properly. I am not sure what I am doing wrong here. This is code-first entity framework. I have two classes: Web4 Answers. Sorted by: 84. Just modify one of the returned entities: Customer c = (from x in dataBase.Customers where x.Name == "Test" select x).First (); c.Name = "New Name"; dataBase.SaveChanges (); Note, you can only update an entity (something that extends EntityObject, not something that you have projected using something like select new ... lower back pain diagnosis icd 10