VB.NET Version of the Contact Manager Application Now Available

It's finally here: the VB.NET version of the demo application from my article series on N-Layer Design using ASP.NET 3.5.

You asked for it, and now it's here: the VB.NET version of the Contact Manager Application that I use as a demo application in my article series on N-Layer design.

All credits go to Sven Huijbrechts from ClearMedia bvba as he did 99.9% of the translation. Unfortunately, he ran out of time, so I fixed the last few remaining issues just a few minutes ago.

Go check it out now: it's available for download here. You can also download the application from the Downloads section at the end of each article.

If you have comments or questions about the source: let me know. I'll try to answer them, or relay them to Sven if necessary.



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On Sunday, February 8, 2009 9:39:45 AM Nick said:
Hi Imar,

Thank you for posting the VB version.

Upon inspection of the ContactManager.DAL.Helper class I noticed the last lines of code, in SetSaveParameters procedure, set up the return parameter, which is not referenced anywhere as far as I can tell. What purpose did you have in mind and how would you retrieve the parameter value after executing a stored procedure?

On Sunday, February 8, 2009 10:47:58 AM Imar Spaanjaars said:
Hi Nick,

You're right. It's not referenced anywhere and as such serves no purpose. You can delete the code that sets up the parameter.

If you do have return parameters, you can simply access their Value property after you've executed your SQL statement.


On Sunday, February 8, 2009 12:00:12 PM Nick said:

Great, thanx. I would imagine that if we wanted that value we would have to assign a name to the return parameter, otherwise we can't reference it in the code that runs "ExecuteNonQuery()".

(Helpers procedure)
Dim returnValue = command.CreateParameter
returnValue.ParameterName = "@retVal"
returnValue.Direction = ParameterDirection.ReturnValue

(Save in *DB classes)
command.Parameters("@retVal).Value '<-do whatever with

On Sunday, February 8, 2009 12:30:19 PM Imar Spaanjaars said:
Yep, that's correct....



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