Daily Archives: May 19, 2008

Registration problems for Thursday’s MSDN Roadshow in Williston, VT? Here’s the fix!

VTdotNetFeed

The online registration system for Microsoft events is currently broken (or just acting really flakey).

If you are trying to register for Thursday’s free, full-day, Bob & Chris & Jim Roadshow , try the online registration first here:
http://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032378634&culture=en-US

If that doesn’t work, you can register by phone

Call the event system directly (877.673.8368) and use the event ID 1032378634.

For more information and details about the event, see Chris’ blog post here:

http://blogs.msdn.com/cbowen/archive/2008/05/02/the-roadshow-rides-again-may-june-edition.aspx

If you are trying to register for a different one of these Roadshow events, just get the EVentID from Chris’ blog.

If you are trying to register for other Microsoft events the phone # should be the same, but you’ll need to know the EventID of the event you are trying to register for.

Great fix in the EDM designer – Inheritance doesn’t trash mappings

Data Access

In the earlier bits, if you changed an association to an inhertiance, the type that becamse the derived type lost its mappings and th emappings for any associations.

Depending on how complex that type is, recreating all of that could be challenging.

I just tried this out in the new bits and the mappings and association mappings all remain intact.

This is great and it will save a tree too, since I can go remove all of that explanation about how to deal with that problem from Chapter 5 of my book!

Safe Mode in the Entity Data Model designer

Data Access

If you have screwed up your Entity Data Model, you may be familiar with safe mode when you try to open the model up in the designer.

But the mapping designer has Safe Mode now, too.

Here is what I get when I am in the middle of creating an inheritance in my model which means that some of my mappings are still a big goofy. I tried to get to the mapping details of the derived type and here is what I see:

The error messages for Entity Framework and the designers are really very helpful.