estimation - Upgrade CAB and Prism 2 to Prism 4 -


we have several cab , prism 2 applications plan migrate prism 4.

has experiance migration of cab and/or prism 2 applications prism 4?

  • are there "gotchas" should aware off?
  • how estimate migration? example x% of original development cost or y hours per screen work.

i have upgraded large (30 module) prism 2 application. took day in total, of time spent changing namespaces , references. followed information microsoft supplied when upgrading. leaving di unity made process easier, have taken longer if had moved unity mef. i've yet hit "gotchas", update answer if/when do.

it's worth noting changes commands otherwise come across invalidcastexception, t delegatecommand not object nor nullable.


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