Signum Documentation

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Database class has a some overloads for deleting entities. All of this methods are just shortcuts for calling UnsafeDelete in the LINQ provider, that does the real work.

Deleting an entity (with Delete or UnsafeDelete method) will delete the entity itself and his related MList elements, but not the related entities (including Part entities). In order to do that, use PreUnsafeDelete in EntityEvents<T>.


Deletes an entity from the database.

public static void Delete(Type type, int id)
public static void Delete<T>(int id) where T : Entity

If the entity does not exist throws a EntityNotFoundException.

There are also overloads that are extension methods for entities or lites:

public static void Delete<T>(this Lite<T> lite) where T : class, IEntity
public static void Delete<T>(this T ident) where T : class, IEntity

As usual, this overloads take the run-time type of the argument, not the static type T.


new UserEntity().Save().Delete(); //I'm feeling productive...


Deletes all the entities in a list of ids:

public static void DeleteList(Type type, IList<int> ids)
public static void DeleteList<T>(IList<int> ids) where T : Entity

If the entities are not found, throws an InvalidOperationException and rollbacks the transaction.

There are also overloads taking lists of lites and entities:

public static void DeleteList<T>(IList<Lite<T>> collection) where T : class, IEntity
public static void DeleteList<T>(IList<T> collection) where T : IEntity

If the lists contain entities (or covariant lites) of different types, they are grouped by type before calling DeleteList(ids).