Today I've brought together with no way to insert item in Many-to-Many relationship based on Entity Framework
The decision was unexpected. I've missed to mark my primary keys in the intermediate table. That was all... Be carefull!
http://weblogs.asp.net/kencox/archive/2009/09/09/fixing-the-system-data-updateexception-definingquery-and-no-lt-insertfunction-gt-error.aspx
http://weblogs.asp.net/kencox/archive/2009/09/09/fixing-the-system-data-updateexception-definingquery-and-no-lt-insertfunction-gt-error.aspx
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