QuoteReplyTopic: i can't understand why this bug come out Posted: 05-Apr-2009 at 7:47pm
before the program can run properly. but once i rewrite it and create entities again, it comes out such error, i don't know what's going on, because the coding are the same as before, but before could run, now it can't.
Sounds like your database/ef model has changed. Refresh your EF model, go into the object mapper and run the name pluralizer then save and rebuild and see if that helps. It's saying that in your EF model you have a link from Category to Products but in DevForce EF's generated designer file, that link does not exist.
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