Hello:
I have an application in VS.NET 2003 and I'm using infragistics 2004, now I want to upgrade it to VS.Net 2008, but I don't know how to do it .
You can find the project upgrade utility with 2009 version under
Start Menu\Programs\Infragistics\NetAdvantage for .NET 2009 Vol. 1\NetAdvantage for .NET Tools\
You can use the utility outside of VS, but I prefer the addin. In the same folder there is a shortcut to install it, and after that you can run the utility from VS Tools menu.
To add to what Amiram mentions, you'll also be moving to a new version of the .NET Framework as well. Our 2004 releases of NetAdvantage were available for versions 1.0 and 1.1 of the .NET Framework (Visual Studio 2002 and Visual Studio 2003), while our 2009 releases are available for versions 2.0, 3.0, and 3.5 of the .NET Framework (Visual Studio 2005 and Visual Studio 2008).
Your first step, of course, should be to back up your work. You want to have something functional that you can go back to.
Your next step is to open up your project in the version of Visual Studio that you're using. This will open up a wizard to help you upgrade the project to the appropriate framework version. Once that's done, save your changes.,
Next, use the Project Upgrade Utility or Project Upgrade Add-In, as Amiram mentioned. This will update the references to the NetAdvantage controls in your project to the selected version.
Finally, test your project to ensure that it functions as you want. There's a lot that's changed in both the .NET Framework and in our controls, and you want to make sure that everything behaves as you want it to. Take a look at the breaking changes section of our help for information as to what was intentionally changed, since this may require a couple adjustments to your application, depending on the controls and functionality used.