How to: Represent Computed Columns (LINQ to SQL)

Use the LINQ to SQL Expression property on a ColumnAttribute attribute to represent a column whose contents are the result of calculation.

For code examples, see Expression.

Note

LINQ to SQL does not support computed columns as primary keys.

To represent a computed column

Add the Expression property to the ColumnAttribute attribute.
Assign a string representation of the formula to the Expression property.

See Also

Concepts

The LINQ to SQL Object Model

Other Resources

How to: Customize Entity Classes by Using the Code Editor (LINQ to SQL)

Last updated on 2011-02-23