I have written a small ORM assembly for private purpose and wanted to check the connection string.
I had created a console application and add a reference to the assembly as I always did.
Project explorer has no warning with the file, object explorer sees all my types and namespaces in the assembly. But compiler can't resolve this reference for some reasons and I don't understand why.
I restarted Visual Studio (Express 2013) but it did not help.
Can somebody get an idea why it can't resolve that assembly reference?
My problem was in different versions of .Net: .dll had been complied for .NET 4.6.1 and Project for .NET 4.5.
I have checked the properties of a dll and there was 4.0 runtime version setted so i was sure that version is fine.
Only compilation warning helps me to realize the reason of this problem.
Unfortunatly i get used to skip them and didn't read it right after a compilation.
Related
I have a problem when referencing a DLL.
I do everything correctly:
1.The DLL is built with no errors
2.I add it as a reference in my other solution
However the system doesn't recognize it and I get the folowing error message:
"Type or namespace could not be found.Are you missing an assembly reference?"
I read on various forums and adjusted the .NET version of the DLL to match the .NET 4 on my project.I tried all versions 4/4-Client Profile/4.5 and none of them fixed the problem.The DLL,I checked with .NET Reflector and everything is there and working as it's supposed to.
Can you help me with this issue?
I am making a small external tool for Visual Studio that uses the following referenced assembly:
Microsoft.TeamFoundation.VersionControl.Client
My tool is built in Visual Studio 2012, so it uses the reference of that same version, 11.0.0.0. When I try to run the same tool in Visual Studio 2013, the file is missing because the version has changed in VS2013: 12.0.0.0.
Note that this happens when only Visual Studio 2013 is installed on the machine.
What I am trying to achieve now, is to have my program use the version that is available on the machine. So if the version 12.0.0.0 is found, use that; and if 11.0.0.0 is found, use that.
After some research I came across this link which said the following:
To successfully deploy your .NET Framework application, you must understand how the common language runtime locates and binds to the assemblies that make up your application. By default, the runtime attempts to bind with the exact version of an assembly that the application was built with. This default behavior can be overridden by configuration file settings.
This can be achieved by the use of a dynamic reference, as explained in that same topic.
While there is information on how to dynamically load references, I am unsure how to approach this.
Based on this I have some questions:
Is there any way for me to add one dynamic reference and have the machine it runs on decide which version it uses?
Are there any other ways to achieve the use of two versions where only one may be used on the machine?
Would an option be to build the application on a machine with VS2012 AND VS2013, and reference both versions?
Edit: Option 3 is not possible because Visual Studio complains about a reference to that component already existing.
Edit 2: If I add the reference as follows:
<Reference Include="Microsoft.TeamFoundation.VersionControl.Client" />
without the use of Version, Culture, etcetera; I get a compilation error saying there is a conflict between different versions of the same dependent assembly.
Edit 3: Setting the referenceversion to non-specific does not work either, as this is a buildsetting and not a runtime setting.
We developed a large solution containing ~35 projects with VS 2010, now we are thinking about migrating to VS 2012 Ultimate.
I converted the solution file to VS 2012 and generally, everything works fine.
But whenever I open the solution, I get some warnings on a certain project A in the solution:
"The project X cannot be referenced"
"The project Y cannot be referenced"
...
where A has project-references to X and Y.
When I build the solution, I get errors that the Metadata of each respective DLL could not be found.
When I look at the references in the solution explorer, they are marked with a yellow warning-symbol. As soon as I simply click on the reference, the warning goes away and the icon looks normal. Then I can build without errors!
The problem occurs each time I open the solution, the affected projects are always the same.
Did anyone else experience this odd behavior?
Deleting and adding the project references again did not help...
Thank you in advance.
EDIT: I checked the csproj file of the referencing project and I wonder that all project reference GUIDs having the above problem are written lowercase, other projects are uppercased.
<ProjectReference Include="..\Presentation.Net\Presentation.Net.csproj">
<Project>{04004c6b-76c8-4f2d-9fcf-5a866bb80fd4}</Project>
<Name>CMS.Presentation.Net</Name>
</ProjectReference>
While within the solution the GUIDs are uppercased:
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Presentation.Net", "Presentation.Net\Presentation.Net.csproj", "{04004C6B-76C8-4F2D-9FCF-5A866BB80FD4}"
Any ideas?
VS 2012 dropped support for some of the older project types. Not all of the VS 2010 project types are supported in VS 2012. For instance, the MSI setup project types have been replaced by InstallShield LE project types. Check the compatibility list here and see if any of your failing project types are an issue.
This pointed me into the right direction.
Visual Studio 2012 Randomly reporting: "The referenced component X could not be found"
At least the warnings go away. Have to check whether the metadata errors will occur again.
When I ran into this problem, it was due to differing versions of .NET between the projects. You need to make sure that the project you are trying to reference has a compatible .NET version with the current project.
For example if your target project is .NET 4.5.2 and the project you reference is on 4.6, you can get this error as the referenced project is using components that your current project cannot access.
To solve it, simply go to the target project's properties and select the correct compatible version of .NET. For all my projects in my solution I maintain the same .NET version for each of them, especially if they are referencing each other.
Try to clean the project/solution and then build it.
I found this problem on my C# project which I started at Visual Studio 2010, when I go to another PC I use in 2008, I open the project.csproj:
A get or set accessor expected
and warning:
The referenced component 'Microsoft.CSharp' could not be found.
I thought that it was about .NET Framework or Microsoft.CSharp is not located, because it says that:
Could not resolve this reference. Could not locate the assembly "Microsoft.CSharp". Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors
but I'm not sure about the problem, can you guys give me a solution? Really appreciated.
It sounds like you are targeting .NET 4.0 in the project, and then trying to load it in VS2008 which only targets up to .NET 3.5.
If you need to use the project in VS2008, then you should re-target the project at .NET 3.5:
and then remove any incorrect references (they'll probably have yellow warning triangles on them anyway).
The A get or set accessor expected also suggests you're using new C# syntax, for example dynamic. If you need to target older C# compilers, you'll have to not do that. If you are using multiple IDE versions and it is being a problem, then to ensure you don't do that accidentally you can set the language version for the project via Project Properties -> Build -> Advanced:
i'm trying to develop an application but then these warnings popped out. I have tried disabling my anti-virus (Avira) but it still won't work.
Warning 1 Resolved file has a bad image, no metadata, or is otherwise inaccessible. Could not load file or assembly 'MyAssembly.dll' or one of its dependencies. This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded. ConsoleApplication1
Warning 2 The referenced component 'MyAssembly' could not be found.
Can anybody please help me? Thanks!
What .NET runtime version is your application being developed with?
If the error is to be trusted, your project is say a .NET 3.5 (2.0 runtime) project but the MyAssembly library is developed in .NET 4.0 resulting in the error you see.
You cannot reference newer runtime version assemblies in an older runtime version project. You'd have to "upgrade" your project to at least match the framework version of the assembly given to you.
Right click on your project file and choose properties. Depending on what version of Visual Studio you are using this screen may look different, but go to the application tab and see what the target framework is.
Then go to the assembly you referenced in your references and check the "Runtime Version" in the properties section: