/// <summary>
/// Attaches the given entity to the context underlying the set. That is, the entity is placed
/// into the context in the Unchanged state, just as if it had been read from the database.
/// </summary>
/// <param name="entity"> The entity to attach. </param>
/// <returns> The entity. </returns>
/// <remarks>
/// Attach is used to repopulate a context with an entity that is known to already exist in the database.
/// SaveChanges will therefore not attempt to insert an attached entity into the database because
/// it is assumed to already be there.
/// Note that entities that are already in the context in some other state will have their state set
/// to Unchanged. Attach is a no-op if the entity is already in the context in the Unchanged state.
/// </remarks>
public object Attach(object entity)
{
Check.NotNull(entity, "entity");
InternalSet.Attach(entity);
return(entity);
}
/// <inheritdoc/>
public TEntity Attach(TEntity entity)
{
Check.NotNull(entity, "entity");
_internalSet.Attach(entity);
return(entity);
}