I have a DataContext (db) that can access the tables in my SQL Express database, from which I would like to extract only three of the multiple fields in the tbl
DataContext
Yes, either use an anonymous type like so
var items = db.tblItems.Select(i => new { i.id, i.name, i.totalAmount, });
Or if you have a class use it instead.
var items = db.tblItems.Select(i => new ItemsClass() //Or whatever { Id = i.id, Name = i.name, TotalAmount = i.totalAmount, });