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