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how to use a common class in different projectsI have a few projects i'm working on I have a utility class that i thought i'd use in different projects, for example to log debug notes to file to track runtime status and other general utility functions. so i moved it from the project folder into it's own folder "common" (naturally since i moved it the project cant' find it anymore...which is what i expected) so i put it back into the project by draging from explorer into the vbnet ide I thought it would then reference that file location from the "common" folder (and other projects could do likewise - so i only have one copy to maintain) However, I notice the file was copied by the system (vb ide?) back into the project folder... i was trying to get away from having multiple copies of the same file and having to remember to update it in each project folder if i make changes to it in other projects as i'm working and learning and creating additional functions this utility class could offer. how does one handle this in dotnet? thanks mar On 4/17/2010 4:10 PM, mp wrote:
Show quoteHide quote > newb starting to learn dotnet (vbnet 2008 express - and c#express) You have at least a couple of ways to do this.> I have a few projects i'm working on > I have a utility class that i thought i'd use in different projects, for > example to log debug notes to file to track runtime status and other general > utility functions. > so i moved it from the project folder into it's own folder "common" > (naturally since i moved it the project cant' find it anymore...which is > what i expected) > so i put it back into the project by draging from explorer into the vbnet > ide > I thought it would then reference that file location from the "common" > folder (and other projects could do likewise - so i only have one copy to > maintain) > However, I notice the file was copied by the system (vb ide?) back into the > project folder... > i was trying to get away from having multiple copies of the same file and > having to remember to update it in each project folder if i make changes to > it in other projects as i'm working and learning and creating additional > functions this utility class could offer. > > how does one handle this in dotnet? > thanks > mar > > The first way, if you actually want your class in the project you are working at the time, is to add the class file as an existing item. To do this you go to the "Project" menu, and select "Add Existing Item". I'm using VS 2010 RC for this, so the VB Express 2008 may be slightly different. When the dialog comes up to navigate to your file, notice the "Add" button has a small drop down arrow on the right. After you select your file, select the drop down arrow and select "Add as Link". This adds the file to your project, but leaves it in the common folder. The second way is the way that I prefer handling this situation. Use the code in your Common folder to create a class library project. Create a library in your folder that you add as a reference to your new projects. You need to browse to the folder containing the dll rather than finding it in the list of .Net dlls on your system. This has the advantage of keeping you from modifying the source to the common class, which could possibly break codes in other projects linked to the source file. A breaking change would be rare in option one, but it could happen if you aren't careful. -- Mike On 2010-04-17, Family Tree Mike <FamilyTreeM***@ThisOldHouse.com> wrote:
Show quoteHide quote > On 4/17/2010 4:10 PM, mp wrote: <snip>>> newb starting to learn dotnet (vbnet 2008 express - and c#express) >> I have a few projects i'm working on >> I have a utility class that i thought i'd use in different projects, for >> example to log debug notes to file to track runtime status and other general >> utility functions. >> so i moved it from the project folder into it's own folder "common" >> (naturally since i moved it the project cant' find it anymore...which is >> what i expected) >> so i put it back into the project by draging from explorer into the vbnet >> ide >> I thought it would then reference that file location from the "common" >> folder (and other projects could do likewise - so i only have one copy to >> maintain) >> However, I notice the file was copied by the system (vb ide?) back into the >> project folder... >> i was trying to get away from having multiple copies of the same file and >> having to remember to update it in each project folder if i make changes to >> it in other projects as i'm working and learning and creating additional >> functions this utility class could offer. >> >> how does one handle this in dotnet? >> thanks >> mar >> >> > > The second way is the way that I prefer handling this situation. Use I also like to keep common code in a class library project - but, I prefer to> the code in your Common folder to create a class library project. > Create a library in your folder that you add as a reference to your new > projects. You need to browse to the folder containing the dll rather > than finding it in the list of .Net dlls on your system. This has the > advantage of keeping you from modifying the source to the common class, > which could possibly break codes in other projects linked to the source > file. A breaking change would be rare in option one, but it could > happen if you aren't careful. > use project references, specifically so that I can modify the code. Many times, I find I want to add new methods, classes, interfaces, etc or even fix the occasional bug- and I find it to be very convenient to be able to handle this without opening a completely different project. Yes, there is the risk of breaking changes - but, as long as you dont' change interfaces, etc it's not much of an issue. Besides that, I have all my stuff in continous integration, so if I do make a change, all of the projects that are dependant on that library are immediately rebuilt and their unit tests run. So, I know if I've broken something rather quickely :) -- Tom Shelton oh, i bet if i set copy local to false that will fix it?
no, that didn't work. maybe i have to compile that class alone into a dll so i can add as a reference? Show quoteHide quote "mp" <nospam@Thanks.com> wrote in message news:%232rCYom3KHA.348@TK2MSFTNGP04.phx.gbl... > newb starting to learn dotnet (vbnet 2008 express - and c#express) > I have a few projects i'm working on > I have a utility class that i thought i'd use in different projects, for > example to log debug notes to file to track runtime status and other > general utility functions. > so i moved it from the project folder into it's own folder "common" > (naturally since i moved it the project cant' find it anymore...which is > what i expected) > so i put it back into the project by draging from explorer into the vbnet > ide > I thought it would then reference that file location from the "common" > folder (and other projects could do likewise - so i only have one copy to > maintain) > However, I notice the file was copied by the system (vb ide?) back into > the project folder... > i was trying to get away from having multiple copies of the same file and > having to remember to update it in each project folder if i make changes > to it in other projects as i'm working and learning and creating > additional functions this utility class could offer. > > how does one handle this in dotnet? > thanks > mar > To include shared files in a project w/o copying, do this:
Project Add Existing Item Browse to the shared directory Select one or more files Click the down arrowhead symbol at the right edge of the Add button Add as Link Show quoteHide quote "mp" wrote: > newb starting to learn dotnet (vbnet 2008 express - and c#express) > I have a few projects i'm working on > I have a utility class that i thought i'd use in different projects, for > example to log debug notes to file to track runtime status and other general > utility functions. > so i moved it from the project folder into it's own folder "common" > (naturally since i moved it the project cant' find it anymore...which is > what i expected) > so i put it back into the project by draging from explorer into the vbnet > ide > I thought it would then reference that file location from the "common" > folder (and other projects could do likewise - so i only have one copy to > maintain) > However, I notice the file was copied by the system (vb ide?) back into the > project folder... > i was trying to get away from having multiple copies of the same file and > having to remember to update it in each project folder if i make changes to > it in other projects as i'm working and learning and creating additional > functions this utility class could offer. > > how does one handle this in dotnet? > thanks > mar > > > . > Thanks Mike and AMercer
Show quoteHide quote "AMercer" <AMer***@discussions.microsoft.com> wrote in message news:74DF2D65-D9CB-4CC1-A1F5-CB5C532F6692@microsoft.com... > To include shared files in a project w/o copying, do this: > > Project > Add Existing Item > Browse to the shared directory > Select one or more files > Click the down arrowhead symbol at the right edge of the Add button > Add as Link > > > > > "mp" wrote: > >> newb starting to learn dotnet (vbnet 2008 express - and c#express) >> I have a few projects i'm working on >> I have a utility class that i thought i'd use in different projects, for >> example to log debug notes to file to track runtime status and other >> general >> utility functions. >> so i moved it from the project folder into it's own folder "common" >> (naturally since i moved it the project cant' find it anymore...which is >> what i expected) >> so i put it back into the project by draging from explorer into the vbnet >> ide >> I thought it would then reference that file location from the "common" >> folder (and other projects could do likewise - so i only have one copy to >> maintain) >> However, I notice the file was copied by the system (vb ide?) back into >> the >> project folder... >> i was trying to get away from having multiple copies of the same file and >> having to remember to update it in each project folder if i make changes >> to >> it in other projects as i'm working and learning and creating additional >> functions this utility class could offer. >> >> how does one handle this in dotnet? >> thanks >> mar >> >> >> . >> You would not create classes in a project, to use in other projects,
Add to your project a new Library Project and put the class in that. Everything for that project is created in its own folders. Show quoteHide quote "mp" <nospam@Thanks.com> wrote in message news:#2rCYom3KHA.348@TK2MSFTNGP04.phx.gbl... > newb starting to learn dotnet (vbnet 2008 express - and c#express) > I have a few projects i'm working on > I have a utility class that i thought i'd use in different projects, for > example to log debug notes to file to track runtime status and other > general utility functions. > so i moved it from the project folder into it's own folder "common" > (naturally since i moved it the project cant' find it anymore...which is > what i expected) > so i put it back into the project by draging from explorer into the vbnet > ide > I thought it would then reference that file location from the "common" > folder (and other projects could do likewise - so i only have one copy to > maintain) > However, I notice the file was copied by the system (vb ide?) back into > the project folder... > i was trying to get away from having multiple copies of the same file and > having to remember to update it in each project folder if i make changes > to it in other projects as i'm working and learning and creating > additional functions this utility class could offer. > > how does one handle this in dotnet? > thanks > mar > > 
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