I have a project which builds a DLL (I'll call it mylibrary.dll). DocumentFormat.OpenXml is used by several classes in mylibrary and therefore is a dependency. My project builds successfully and outputs both my mylibrary.dll and a local copy of DocumentFormat.OpenXml.dll. All good so far.
Now I have a new project in a new solution (call it mywebapi). I include references to both mylibrary.dll and DocumentFormat.OpenXml.dll. The project builds successfully and everything is fine.
Here's the trouble, in my project settings, if I have Visual Studio check for "Unused References..." it is telling me that DocumentFormat.OpenXml.dll is not used and should therefore be removed. But if I do not include it in my release, the classes referencing it fail cause the dll is missing.
Is it possible to mark it as a chained reference? Or somehow otherwise tell Visual Studio that it is a dependency?
This is an old question. Never found a solution. But this is probably irrelevant now with newer versions of VS.
Related
I have a DLL project in Visual Studio 2015 with properties:
However on the left hand side, I see "Librarian" rather than "Linker" options. Also on build I get undefined symbols for all referenced libraries (the project references a few projects in the solutions which build as static lib).
To note:
I converted the project from a static lib to a DLL by changing the "Configuration Type" option.
I have applied, saved, closed, reopened
Linked projects are of same type (e.g. Debug/x64) for this solution configuration.
This could be a VS2015 bug?
Note perhaps similar question for previous version of Visual Studio
In Visual Studio 2012 what is the difference between Librarian and Linker?
(however the question doesn't specify that it's a DLL project)
The problem is that the DLL project had a property sheet which sets the project as a static library, and had a libraries section.
It seems setting your project settings to DLL cannot override this kind of property sheet.
Please bear with me on this, since I am a Java developer just dipping a toe into the ASP.Net world
I started coding in an existing C# VS2012 codebase. It uses nuget and Newtonsoft is mentioned in the packages.config
When I right-click on Controllers > Add a new controller, I get the following error.
Could not load file or assembly 'nunit.framework, Version=2.2.4.0, Culture=neutral, PublicKeyToken=...' or one of its dependencies.
The system cannot find the file specified.
Now looking around in Google, it seems the GAC is missing an NUnit assembly. Not sure what I should do about that. Should I get NUnit? Why is it looking for a certain version of nunit (& that too a very old one)?
Any help for me to resolve this problem will be highly appreciated!
When you click "Add new Controller' Visual Studio will try to complete the parse/build to populate a number of values in the window that it is supposed to show you (with the available Models and available Views). It looks like at least one of your projects is missing a dependency (probably your Unit Test project).
NUnit 2.2.4.0 is indeed a pretty old version, it doesn't even exist on NuGet yet (which would have been an easy fix). It makes sense that NUnit is not installed in the GAC, since you normally don't put everything in the GAC just because it seems to be possible. If you're willing to upgrade to the latest NUnit version, the easiest way is to add the NUnit NuGet package to your project through the Package Manager.
I would assume that when you'd open the project file for the project that is generating this warning in Notepad, you'd see a <hintpath> tag as a sibling of the NUnit Reference (it may not be there) which points to the folder where it is telling Visual Studio to look for NUnit.
I suggest you install the NUnit version your project is looking for from here and then update the reference in your project to point to the correct location. That should fix the issue.
As for your remark on the specific version, .NET Assemblies are compiled with a specific version number (usually set in the AssemblyInfo.cs) a reference in a project file can be to a specific version or to any assembly with that name (highlight the reference in the Solution Explorer and check the properties window (ctrl+w,p or alt+enter). You'll see a property "Specific Version" which in your case is set to "true" which caused Visual Studio to store the assembly version in the project file.
Add the code files into a workable solution project.
It is workable for me.
Or, try to create a new Nunit test project with the codes
I also try the following method, but not working for me
Install Nunit, adapter, SDK from the Nuget package
Clean-Rebuild
I'm working with some application handed over by another person in which I must document the requirements, build and deploy processes.
The problem here is that Visual Studio (2005) is throwing a lot of errors since it can't find the references for the dlls.
This obviously won't let VS build the project.
Everything works fine on the persons computer but not on mine, even though the project references the same folder where the dlls are, the bin folder.
How can I circumvent these problems and get VS to properly reference the dlls?
The following printscreen shows the references screen for the project.
My guess is that your DLL uses a more recent .NET framework than your application does.
Check the properties for your DLL source (right-click on the DLL code in the solution explorer and choose Properties). Go to Application - Target .NET framework and compare the version to the one the application itself uses (right-click on the project code). Note: under your application properties check both the settings under Application - Target .NET framework AND under Publish - Prerequisites.
For what it's worth, even after changing the .vbproj file and removing many lines about hard coded values,
I eventually checked out the project again removed all references to the given DLL and then added it using the GUI.
Lesson learned, don't try to change out one DLL for a newer version without using VB2005 GUI.
The easiest solution will probably be to transfer everything to another project. It will be incredibly time consuming to find where visual studio has left the hard coded path at.
WOOT!!!! Compile the DLL file to a lower version of the .NET framework, and it will fix the problem!!!!
The paths in the project file cannot be the same or the assemblies referenced have a different version.
It might be worth unloading your project and the editing it to inspect where it's looking and for what version.
I had the same problem with an older Visual Studio Project that I opened in Visual Studio 2008. I tried to add new references to the project and got permanent errors that the dll's cannot be found. After the migration of the Project to Visual Studio 2010 I got the following error message when I tried to add a new reference:
'mySample.dll' or one of its dependencies, requires a later version of the .NET Framework than the one specified in the project. You can change ...
After changing the projects .NET Framework to a newer version everything works fine.
Good suggestions in other answers. In my case, it was because the libraries weren't copied (downloaded) successfully: the files existed, but were 0 kB.
Did a clean, which removed all the DLL's and then VS2008 complained it couldn't find the references (Duh!!!) and wouldn't rebuild....luckily I had and old version of the dll's and replaced them in the directory AND THEN did a rebuild to replace them...all references are now OK and we're back to normal....good old VS 2008
I have Visual Studio 2010 installed and have a project I got from someone else which I can build successfully without any errors. I get a Wrapper.dll,
which I would like to access using JNA.
I am using Win7 64-bit.
But I get the error: java.lang.UnsatisfiedLinkError: Unable to load library 'Wrapper': The specified module could not be found.
Wrapper.dll of course is in the correct folder and it is a 32-bit dll and my Java program also uses a JRE with 32-bit, so this is not the cause of the error.
I used DependencyWalker to check whether *.dlls are missing:
MSVCP80.DLL
MSVCR80.DLL
GPSVC.DLL
IESHIMS.DLL
And yes there are some missing.
Can I conclude that the error is related with that these DLLs are missing?
But why does Visual Studio compile correctly then and does not throw an error?
How to solve this in order to access these functions in Wrapper.dll?
I also read that downloading dll's might not be the right thing to do!
(I know that Wrapper.dll relies on another dll or sourcecode which was built in Visual Studio 2005, if that is of interest.)
EDIT:
I found out, that Wrapper.dll relies on three other dlls which probably were built on MSVS2005. These require the above mentioned DLL's (checked with dependencywalker) and I guess therefore Wrapper.dll also links them.
So what do I actually do to get rid of these old dll's?
Would I need to build the other three DLLs with VS2010 or
is this a problem which always will appear, meaning, that you need to copy paste old DLLs in order to use the precompiled Libraries which are dependent on those.
Is there a way, that the program would run on any other system as well without copy pasting these DLL's?
All required DLLs must be available to the system for loading. If you define jna.library.path, that is where JNA will look for the initially loaded DLL, as well as any dependent DLLs. In addition, java.library.path (which is essentially PATH) will be searched for dependent DLLs.
MSVS often uses paths in addition to PATH when building, debugging, and running code within that environment.
Solutions:
a) remove dependencies you don't really need; this may include telling MSVS to build your DLL differently
b) include non-system DLLs next to your custom DLL (or include their location in PATH/java.library.path)
EDIT
a) you can include the offending DLLs in the same directory as yours. this is fairly low impact on the target system, but if they are DLLs that are expected to be on any system, you shouldn't have to do so. It's preferable to adjust java.library.path so that all system DLLs are accessible.
b) you can recompile your dependent DLLs and be more careful about backward compatibility and explicit linkage. Depending on features used by the DLLs, though, you may not be able to remove the dependencies.
MSVC[RP]80.DLL are C and C++ runtimes, respectively; you may or may not be able to link against a previous version.
IESHIMS.DLL is part of IE and should be on the system, but likely in a path inaccessible to your program.
GPSVC.DLL has to do with group security policy, so it should be available on the system (modulo whenever the DLL was introduced).
I am trying to troubleshoot a VB.NET project that contains UserControls (actually, several of them that are displaying the same issues). I am trying to get them to build under x64, but it is impossible. In x86 or AnyCPU, the UserControl builds and shows up in the Toolbox, so I can add or modify it in the forms that require it. In x64, the controls disappear from the Toolbox, I get warnings during build (the current project builds though), I can't see any of the forms - I get errors (please see below) - and projects that require the project with the form as an import will not build.
When I was studying what these UserControls are so that I can maybe rebuild them from scratch, I downloaded code from a book - great learning tool, but I get the same errors:
Could not find type 'Chap15SampleCode.ListSelector'. Please make sure that the assembly that contains this type is referenced. If this type is a part of your development project, make sure that the project has been successfully built using settings for your current platform or Any CPU.
The variable 'ListSelector1' is either undeclared or was never assigned.
I also get warnings, not sure what to do about them:
Possible problem detected while building assembly 'Chap15SampleCode': Referenced assembly 'mscorlib.dll' targets a different processor
Possible problem detected while building assembly 'Chap15SampleCode': Referenced assembly 'System.Data.dll' targets a different processor
I checked and found System.Data as a Reference is in c:\Windows\Microsoft.NET\Framework... (if I change the target framework to 4.0 the Reference is in c:\ProgramFiles(x86)... that was what my projects had ... and I tried to change it because of the x86, I couldn't, I had a few others in ProgramFiles(x86) and I thought that may be the problem ?)
Reinstalled VS2010, reinstalled Windows - did the same before btw - but I do have a clean system so I can't blame it.
If I can get this simple project to work, I hope the real projects will be easy - Please help me figure out what this is about. Thank you.
You have changed the Platform target setting in the project to x64. This is not appropriate for any project that produces a DLL. The actual bitness of a process that uses your DLL is determined by the EXE that starts the process. Or the host in which your DLL runs, the case for Visual Studio which is a 32-bit process. There is nothing a DLL can do to force the bitness, it can only refuse to get loaded. Which is what you see happening.
Change the setting back to AnyCPU so that your UserControl will work correctly in any process, regardless of its bitness. Including the VS designer. Project + Properties, Build tab. For VB.NET it is located in the Compile tab, Advanced Compile Options button.