Sunday, October 4, 2009

NHibernate error ‘Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index’

I got the following NHibernate error when I tried to commit an entity class using a transaction:
Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index
I figured out that two fields in the .hbm.xml mapping file reference the same column in a table. Simple bug, but complicated to debug.
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8 comments:

  1. AnonymousOctober 1, 2010 at 11:11 AM

    thanks mate, quick and to the point

    ReplyDelete
  2. JasonOctober 22, 2010 at 6:52 AM

    Thanks a million! Just ran into this issue and fear that it would have taken me a LONG time to figure out the cause had I not ran across you blog! Great stuff!

    ReplyDelete
  3. AnonymousDecember 1, 2010 at 11:50 AM

    Thanks, that was really it.

    ReplyDelete
  4. UnknownJanuary 9, 2011 at 9:52 PM

    Valeu.
    isso me ajudou bastante.

    ReplyDelete
  5. UnknownJanuary 11, 2011 at 11:29 PM

    Thank you very much stuck with that error was 3 days ago

    ReplyDelete
  6. AnonymousJanuary 19, 2011 at 3:14 AM

    Inacredibilível!!!

    Passei raiva com isso uma semana.
    Very much thanks!!!!

    ReplyDelete
  7. AnonymousJune 27, 2011 at 11:56 AM

    You saved me from a day of agony and pain.
    Thank you very much!!!
    Keep up the good work

    ReplyDelete
  8. AnonymousSeptember 9, 2019 at 8:27 PM

    It's help me to solve.

    ReplyDelete

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