Question

With LINQ to SQL in a ASP.NET MVC website I can display objects (records) from my database table.

Now I would like to create a new object and save it back to the database.

In my Controller, I do this:

    var dataContext = new MessageDataContext();     Message message = new Message();     message.Action = 'save';     message.Body = 'record';     message.Parameter = '234'; 

And now I want to SAVE it with something like this:

message.Save(); 

Or perhaps:

dataContext.SubmitChanges(message); 

But neither of these work.

What is the syntax here to:

• add new objects and save them to the database?
• make changes on existing objects and save them to the database?

Answer 1

What you’re looking for is:

dataContext.Messages.InsertOnSubmit(message); dataContext.SubmitChanges(); 

Assuming you have a Messages table mapped into your LINQ to SQL DBML.