We'll need more information than you have provided.
If you need to delete a row in the entity framework data model, it's like this:
MyModel model = ;
model.DeleteOject(myEntity);
model.SaveChanges();
Now when you say grid view, are you talking about the grid view mode of a list view? If so, you should be binding the ItemsSource to an observable collection of your entities. Then you can remove an entity from the observable collection and the grid will automatically be updated.