We will be using the same console application that we created in the previous article, so make sure you have read the previous article before we continue.We will be adding three methods to the console application: add Customer(), delete Customer() and modify Customer() Create and Add Objects in Entity Framework 4.0 In order to add new objects to the Entity Set, you must create an instance of an Entity type and add the object to the object context.Here are some of the problems that you have to solve: 1) How can you create these web services without having to create a separate set of entity objects (that is, we want to use the entity objects that the LINQ to SQL designer generates for us)?2) What do we have to do to get LINQ to SQL to work with entities passed in through web services?A couple weeks ago, I read the article, LINQ to SQL Extension: Batch Deletion with Lambda Expression by Jeffrey Zhao.In case you didn’t read the article, it discusses the downside of most O/R Mapping frameworks when it comes to multiple updates or deletes.Hi I'm working on winforms project with openaccess as my orm and this is my first try of openaccess orm.
Also notice in the code above, that we are accessing data as objects and properties.
Since I recently converted my site to blogengine.net, I’ll use its database schema for all examples to follow.
In addition to this, all code snippets you’ll see were run in LINQPad, which at the moment is by far my favorite development tool that I’m using (now if they’d only get intellisense in there, I’d play with this program all day long).
LINQ to SQL is a great tool, but when you’re using it in an n-tier scenario, there are several problems that you have to solve.
A simple example is a web service that allows you to retrieve a record of data and save a record of data when the object that you are loading/saving had child lists of objects.