Is there an automatic way to add base classes to Linq2Sql entities?
I know I can define a partial and implement that but there has to be an automated way, right?
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Is there an automatic way to add base classes to Linq2Sql entities?
I know I can define a partial and implement that but there has to be an automated way, right?
The LINQ-to-SQL code-generator supports this directly.
The base-class for the data-context can be set in the designer, as the
Base Classproperty. Alternatively, edit the dbml directly: right click, ‘Edit With…’, ‘XML Editor’To change the base class for the entities, set the type:
To change the base class for the data-context, set the type:
In both cases, use the fully-qualified type in the attribute. Et voila.
Note that because it is very literal, you can also use this approach to make your entities implement an interface – for example, when my classes have properties like
LastUpdatedandUpdatedBy, I might have anIAuditableinterface that defines these. Then I can put code in my data-context’sSubmitChanges(override) that callsGetChangeSet()and sets these values for all theIAuditableentities being updated; very sweet.