Large application upgrade (VB6 to.VB.NET) question

[AllenL]

After nearly two years using VB.NET, I'm now working for a company
that has a very large commercial ASP/COM+ application (1 million+
lines of VB6 code, 350+ objects in the COM+ catalog, 2300+ classes).

The corporate decision has been made to "port" this monster over to
..NET (C#/VB.NET). My inquiry is to discover some of the major issues
that might be raised in the course of this endeavor (I've reviewed
most of the Microsoft documentation on projects of this type).

I've convinced some (but not all) managers that it is not just a
question of what percentage of code "can" be translated successfully
to .NET, but how much code "should" be translated. In other words,
given the major benefits that the .NET model offers, new code should
be written to take advantage of these benefits -- even if this means a
major (or complete) rewrite.

Any tips/experiences/advice from senior programmers who have worked on
very large projects like this will be welcome. Please, no company or
product names.

AllenL

[Tom Leylan]

"AllenL" <c2***@bellsouth.net> wrote...

The corporate decision has been made to "port" this monster over to
.NET (C#/VB.NET).

Are you near New York City and do you need help :-)

[Yan-Hong Huang[MSFT]]

Hello AllenL,

Thanks for posting in the group.

This is a big topic and quite hard to answer in just one post. :) When we
migrate an existing big project to .NET program. Based on my experience,
there are several things we need to keep in mind:

1) N-Tier application needed?
2) Designing for web or desktop?
3) Cross-OS platform needed?
4) ASP->ASP.NET?
5) Data access
6) Transaction style
......

I recommend you read the following series of .NET articles:
"Upgrading to Microsoft .NET"
http://msdn.microsoft.com/library/en...gtodotnet.asp?
frame=true

This series of articles includes the core information a developer needs to
start to get the most out of the Microsoft .NET Framework and Microsoft
Visual Studio .NET, including tips and tricks on the new data access system
(Microsoft ADO.NET) and Web application system (Microsoft ASP.NET). The
articles focus particularly on the Visual Basic developer, but apply across
all languages.

Looking at the nature of this question, it would require intensive
consulting which would be done quickly and effectively with direct
assistance from a Microsoft Support Professional through Microsoft Product
Support Services. You can contact Microsoft Product Support directly to
discuss additional support options you may have available, by contacting us
at 1-[phone] or by choosing one of the options listed at
http://support.microsoft.com/default...d=sz;en-us;top. If this is not
an urgent issue and your would like us to create an incident for you and
have Microsoft Customer Service Representative contact you directly, please
send email to (remove "online." from this no Spam email address):
mailto:ds******@online.microsoft.com with the following information,

*Location of the post
*Subject Line
* First Name, Last Name
*MSDN Subscriber ID
*Company name (if any)
*Phone number
*e-mail address

Best regards,
Yanhong Huang
Microsoft Online Partner Support

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This posting is provided "AS IS" with no warranties, and confers no rights.

[Herfried K. Wagner [MVP]]

* "Tom Leylan" <ge*@iamtiredofspam.com> scripsit:

The corporate decision has been made to "port" this monster over to
.NET (C#/VB.NET).

Are you near New York City and do you need help :-)

What's the point?

--
Herfried K. Wagner
MVP · VB Classic, VB.NET
<http://www.mvps.org/dotnet>

<http://www.plig.net/nnq/nquote.html>