Disable List Event Handler in the Client Object Model

Question

I have a client windows application that is uploading many rows of data to a list. However, I don't want the event handler on the list to fire while rows are being added via the windows application.

Is there a way in the Client Object Model to disable, or remove and add the list event handler?

Thanks.

Answer 1

If you create a web service as @moontear suggest you can use this solution by Adrian Henke to update items without triggering events:

public class SPListItemExtensions : SPItemEventReceiver, IDisposable
{
    private readonly bool _oldValue;

    public SPListItemExtensions()
    {
        _oldValue = EventFiringEnabled;
        EventFiringEnabled = false;
    }

    #region IDisposable Members

    public void Dispose()
    {
        EventFiringEnabled = _oldValue;
    }

    #endregion
}

Usage:

using (new SPListItemExtensions())
{
    item.Update();
}

Referenses:
http://stackoverflow.com/a/2468156
http://adrianhenke.wordpress.com/2010/01/29/disable-item-events-firing-during-item-update/

Answer 2

Unfortunately you will not be able to access the event receivers using the COM.

See the MSDN documentation on the SP.List object. Your only chance would be to develop some kind of custom webservice which you could call from you client code and which disables the event receiver temorarily.