DRY Principles - Finding Entities With Attributes

var types = (from assembly in AppDomain.CurrentDomain.GetAssemblies()
    from type in assembly.GetTypes()
    where Attribute.IsDefined(type, typeof(FCBids.Domain.AuditEntityAttribute), false) && !type.Namespace.Equals("System.Data.Entity.DynamicProxies")
    select type).ToList();
 
foreach (var type in types)
{
    /// do what you need to here.
    /// ....
}