Question

If I want to compile my LINQ->SQL classes into a DLL to provide to my developers, how can I make it so that they can still hook into the various entity partial methods (OnValidate, for example)? I know that you cannot implement partial methods on a compiled assembly, but any suggestions on how I can extract this behavior (perhaps with events?) would be appreciated.

Answer 1

You may need to customize this solution for your needs, but a simple way of publishing events from partial methods can be done like so:

partial class LinqClass
{
    public event Action<LinqClass, ChangeAction> OnValidating;

    partial void OnValidate(ChangeAction action)
    {
        if (OnValidating != null)
        {
            OnValidating(this, action);
        }
    }
}

You may or may not need to pass along different parameters, but the Action will support numerous.