ask:Data Mining with SQL Server 2005 without Analysis Services

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i get problem with code source CHAID in article :
Data Mining with SQL Server 2005 without Analysis Services exist in link :

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problem :l'ecxution stoped in :

/************************************************/
TListOfNdLists ViewTree = ViewForest[sel_index];
/*************************************************/

NullReferenceException:

La référence d'objet n'est pas définie à une instance d'un objet.

Posted 13-Aug-12 3:12am

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[no name] 13-Aug-12 9:14am

And what did you discover when you debugged the code?

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Bernhard Hiller · Answer 1 · 2012-08-13T04:28:00

Solution 1

That means that ViewForest is null. Where - and how - is that variable instantiated? The cause of the error is likely to be found there.

Posted 13-Aug-12 4:28am

Bernhard Hiller