Linq to sql updating Visiochat live show
In addition to saving a trip to the database, you also have a method for performing batch deletes.
The Delete method itself, by the way, returns an integer result that tells you how many items were deleted (which might be more than one because, after all, there might be multiple customers whose first name is Peter).
If you were to grab the SQL statement sent to the database, you'd see that it's exactly what you would write yourself: Effectively, the LINQ statement (regardless of how you write it), provides the Where clause that the Delete method will use in the single SQL statement it sends to the database.
The LINQ to SQL is having facility to maintain the changes whatever we do to the objects like adding or removing or updating items in collection object till we submit the changes by using Submit Changes() method.But, in one of those columns, a reader pointed out that I've ignored an open source set of Entity Framework extensions that makes it easier for you to achieve that separation: the Lore Soft Entity Framework Extended Library (available through Nu Get as Entity Framework. NET code and generate your SQL statement, the default pattern is different.With EF LINQ you retrieve the corresponding object, remove it from its collection, and then call Save Changes.I ran into an interesting issue with LINQ to SQL yesterday. As I expected, LINQ to SQL wasn’t too happy with this scenario.Unfortunately LINQ to SQL will only throw an exception when you try to Insert or Delete a record with no primary key. It’s actually quite obvious when you look into what is happening.