topic Re: Error reading Dictionary "Object reference not set to an instance of an in .NET Forum

Error reading Dictionary "Object reference not set to an instance of an object"

SRSDS — Thu, 25 Aug 2011 00:16:16 GMT

Can anyone please explain what is going wrong here.

I'm getting a "NullReferenceException. Object reference not set to an instance of an object" using:

    For Each SetEntry As DBDictionaryEntry In SetRootDict
        Dim SetEntryDict As DBDictionary = CType(SetEntry.Value.GetObject(OpenMode.ForRead), DBDictionary)
    Next

I have the same lines letter for letter in a different procedure and referring the same unchanged root dictionary where it works fine.

Re: Error reading Dictionary "Object reference not set to an instance of an

SRSDS — Thu, 25 Aug 2011 09:10:36 GMT

I replaced it with an alternative that works.

Dim SetEntryDict As DBDictionary = trans.GetObject(SetRootDict.GetAt(SetEntry.Key), OpenMode.ForRead)

A bit confused why the previous line would work in one location and not another.

Re: Error reading Dictionary "Object reference not set to an instance of an

jeff — Thu, 25 Aug 2011 10:58:33 GMT

Was one inside a transaction and the other not?

If not When TopTransaction is called it might cause that.

Re: Error reading Dictionary "Object reference not set to an instance of an

SRSDS — Thu, 25 Aug 2011 11:16:09 GMT

Hi Jeff,

Both are located inside the top transaction. I think this is relevant but the only difference I see is that the one that didn't work was being called from an override. Probably not it though, just taking a wild stab.

Re: Error reading Dictionary "Object reference not set to an instance of an

jeff — Thu, 25 Aug 2011 14:30:49 GMT

Override in a overrule?

If in a overrule's check out Stephen Preston's classes on it and if I remember correctly he suggests using OpenCloseTransactions

Re: Error reading Dictionary "Object reference not set to an instance of an

SRSDS — Thu, 25 Aug 2011 14:54:07 GMT

Sorry.. during an overrule. not an override

Yea I've read the classes and watched the videos.

I forgot about the OpenCloseTransactions thing.

Everything seems to be stable at the moment but I should change that.

topic Re: Error reading Dictionary "Object reference not set to an instance of an in .NET Forum

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Re: Error reading Dictionary "Object reference not set to an instance of an

Re: Error reading Dictionary "Object reference not set to an instance of an

Re: Error reading Dictionary "Object reference not set to an instance of an

Re: Error reading Dictionary "Object reference not set to an instance of an

Re: Error reading Dictionary "Object reference not set to an instance of an

Error reading Dictionary "Object reference not set to an instance of an object"