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.NET Forum / Languages / C# / May 2007Using .Net 2.0 components in .Net 1.1?
Hi, I need to convert a big .Net 1.1 solution to .Net 2.0. There is a LOT of code here and I do not want to do the conversion all in one go. I would like to be able convert individual projects from the solution to 2.0 and then reference them from the 1.1 solution, but when I try to add a 2.0 .dll into a 1.1 project, I get an error "A reference to ... could not be added. This is not a valid assembly or COM component....." I can reference this same component in other 2.0 projects, so I think it is valid for 2.0, but not 1.1. Is there a way to convince .Net 1.1 to read a .Net 2.0 dll? Thanks! Ethan Ethan Strauss Ph.D. Bioinformatics Scientist Promega Corporation 2800 Woods Hollow Rd. Madison, WI 53711 608-274-4330 800-356-9526 ethan.strauss@promega.com > Hi, > I need to convert a big .Net 1.1 solution to .Net 2.0. There is a LOT of [quoted text clipped - 7 lines] > valid for 2.0, but not 1.1. Is there a way to convince .Net 1.1 to read a > .Net 2.0 dll? No - go the other way round instead; start off with the top-level project, and make that refer to 1.1 DLLs. That will work fine. Gradually work down the dependency tree.  SignatureJon Skeet - <skeet@pobox.com> http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet If replying to the group, please do not mail me too OK. Thanks to all. I was afraid I would have to do that. I could have started with smaller chunks the other way 'round... I'll start today! Ethan >> Hi, >> I need to convert a big .Net 1.1 solution to .Net 2.0. There is a LOT [quoted text clipped - 16 lines] > project, and make that refer to 1.1 DLLs. That will work fine. > Gradually work down the dependency tree. > Hi, > I need to convert a big .Net 1.1 solution to .Net 2.0. There is a LOT of [quoted text clipped - 7 lines] > valid for 2.0, but not 1.1. Is there a way to convince .Net 1.1 to read a > .Net 2.0 dll? Not directly, no. You could set up a remoting scheme of some sort to go from the 1.1 to 2.0 dll indirectly, but you cannot directly reference a 2.0 assembly from a 1.1 assembly. Nor you can load a 2.0 assembly under the 1.1 framework. SignatureTom Porterfield On May 10, 4:40 pm, "Ethan Strauss" <ethan dot strauss at Promega dot com> wrote: > Hi, > I need to convert a big .Net 1.1 solution to .Net 2.0. There is a LOT of [quoted text clipped - 7 lines] > valid for 2.0, but not 1.1. Is there a way to convince .Net 1.1 to read a > .Net 2.0 dll? Try the other way. For example, convert your application project first, and it can use assemblies from .Net 1.1 without recompiling. There's no way to get 1.1 to use 2.0 assemblies. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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