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Hi guys, I am trying to upgrade to lightspeed 3.0. I don't want to delete my existing database model and still upgrade. How can I accomplish that. Do you have have steps and guidelines to upgrade. Thanks, |
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You shouldn't need to delete your model. LightSpeed 3 will happily work with existing models, whether built using the designer or hand-crafted in C# or Visual Basic. You just need to uninstall LightSpeed 2, install LightSpeed 3 and maybe update project references (the install path has changed). You will also need to update your project to target .NET 3.5 if it doesn't already do so. Your application code that uses the model should also be unaffected. There are a couple of obsoleted methods and properties but not much more than that. See http://www.mindscape.co.nz/blog/index.php/2009/12/17/moving-from-lightspeed-2-to-lightspeed-3/ for more info. We've also been told that we have a bug with an advanced use case using Expression.Invoke to build LINQ queries on the fly (we're investigating this with a view to fixing it). We have many customers who have taken LightSpeed 2 code across to LightSpeed 3 without any problems, so we don't think you should see any issues. If you hit anything specific, let us know. |
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