Question

I wrote a visual c# 2008 windows form application ,then i edited the code in a computer which had visual studio 2010,but i can no longer run it in visual 2008,is there a way i can do this?

Answer 1

When you say “can no longer run it”… what happens?

• the sln files are not compatible; you’ll need different sln files for each VS version
• the csproj are mostly compatible, although you might see a “version 4 not recognised, using 3.5 instead” warning or two, which is usually fine
• the cs is compatible as long as you don’t use dynamic or the other new language features

In most cases you can get away with just having a separate sln for VS2010. So just rename it to “Whatever_2010.sln”, get your old “Whatever.sln” back from your source repository, and rename it to “Whatever_2008.sln”.