How to: Customize Entity Classes by Using the Code Editor (LINQ to SQL)
Developers using Visual Studio can use the Object Relational Designer to create or customize their entity classes. For more information, see Object Relational Designer (O/R Designer) and Object Relational Designer (O/R Designer).
You can also use the Visual Studio code editor to write your own mapping code or to customize code that has already been generated. For more information, see Attribute-Based Mapping (LINQ to SQL).
The topics in this section describe how to customize your object model.