Recenently my ASP.Net Mvc 3 project stopped compiling and I have no idea why. It is giving me this error message.
"Could not load file or assembly 'ProjectName.1' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)"
Any suggestions on why this might have happened and how to fix it?
Are you using source control? If so, I'd look for changes since the last version that built.
Also try cleaning the project, as well as manually clearing out the Obj/Bin folders to see if that helps.
Maybe also try searching for ".1" across the folder your app is in!
I think #DanTup - Danny Tuppeny has the right idea about searching for the .1 but I would recommend looking inside of the actual project files (and/or solution file) that is directly getting these messages. Right Click Project < Unload, Right Click Project, edit or with notepad on disk.
This is where you'll find the raw project references and build configuration and will most likely clue you in on what's happening. I would also agree using version history differences is the right idea and to do that on the project files.
You may want to try creating a blank (new) mvc 3 project and adding all your files from your old project to it, it's odd but it's fixed some strange mvc2 problems for me.
Related
I am working on a C# program that utilizes EntityFramework, I've cloned the program from git repo, but now it is having that dreadful Metadata file 'EntityFramework.dll' could not be found error. I have searched and tried countless suggestions for this kind of problem, but none worked. I've already checked that the reference to EntityFramework.dll in the .csproj files are correct and it is definitely there under the packages\EntityFramework.6.2.0\lib\net45\ folder. So I am not sure what else to try.
Ok, I've resolved this problem. Here is what happened. Apparently, when cloning into local directory, one of the folder on the path has a space in its name (like My DSS), and this nuget issue seems to indicate the inability of nuget to find package with space in path. So, once I changed that folder's name to MyDSS, it compiled successfully.
please have a look on the bin folder ,sometimes the dlls do not exist there .
This typically happens when teams check in files that should not be checked in (such as the .suo file) or have "optimized" their builds to exclude rarely changed projects. (unticking projects in the configuration manager.)
Another common cause for missing references is when devs reference a dependency from a /bin folder instead of the packages folder, but it sounds like you've confirmed that isn't the case.
Other questions such as Metadata file '.dll' could not be found list a number of things to check, so your problem will surely be one of these. Try building each project individually, working from projects that have no project dependencies upwards to the main application project(s). Ensure they're running the same .Net versions, check the solution NuGet packages for dependencies with "multiple versions" and consolidate these so that the solution is using a single version of each dependency. (generally good for cleaning up) Also look at .config files for version re-directs that sometimes get zombified in source control.
In Visual Studio, on top, click on Build -> Configuration Manager. Make sure that the build checkbox next to your project is checked. In case it already is, uncheck it and then make it checked again. Clean your Solution and Build it again after this.
This site was developed a few years ago. it was working 100%. I am re-deploying to my pc to make some changes and testing. Now it cannot find those classes in those files. I have always used 4.5 Framework. I have searched for a solution, unfortunately those have not resolved my issue. including coping it into main directory. It worked when I copied the actual code into one of the *.cs.aspx files. However there are more then 20 pages using this email file. Any advice would be welcome. I have been scratching around for days. Thx.
===================ERROR========================>
The error is as follows:The type or namespace name 'Emailer' could not be found (are you missing a using directive or an assembly reference?)
===================ERROR-DISPLAY================>
Source Error:
Heading
As the message is saying you are most likely missing an Assembly reference. Look at the references of the old project (pic below) and make sure your new project has the same ones added.
If you locate any missing references you can add them by clicking on References > Add reference, and find it among the listed ones or browse to the physical path.
Go to class property window by right clicking on it. Look for build option here Change your class build option to compile.
You probably changed a Web Site Project to a Web Application Project. There are a couple of differences between these project types. Among them, in Web Application Projects, the App_Code directory seems to be ignored.
I've got a weird issue that seems to be slowing down my project. I installed the Ninject NamedScope extension into my project, but later found out I didn't need it and removed it. However, when I run the project at the bottom of visual studio it tells me loading symbols for Ninject.Extensions.NamedScope, and then it tries to look for them quickly in various places which seems to be make my site pretty slow.
I've searched my entire solution for any references to NamedScope, nothing. I've checked my packages.config, nothing. I've checked the references, not there. I've even checked the .dlls in the bin folder, not there either.
So why is it trying to load symbols from something I removed and how can I get it to stop? It's noticeably slowed down my page load times.
Here are some pictures to show what occurs every page request in visual studio when debugging:
So why the heck is it trying to look in Windows\dll for this extension? When I search for any reference to NamedScope in the entire solution I get this:
Anyone have any idea??
I had a similar issue. It was caused by a stale .dll and .config in my bin folder . (I had renamed the Output assembly earlier ) Deleting the files resolved this issue.
Might help.
I'm combing through a massive program for work that was worked on previously by 4-5 other programmers and ironing out the errors. I've come across an error involving the following line of code at the beginning of the file:
using WebSupergoo.ABCpdf8;
it's giving the following error: "The type or namespace name 'WebSupergoo' could not be found (are you missing a using directive or an assembly reference?)"
I know this is due to a reference I haven't included, and I found the website that has the files for it. But I can't figure out how to bring in the reference. I created a reference using the .dll file and then I included the reference, but I'm still getting the error. I don't have permission to post the program online, but I can give more details if necessary.
Any suggestions would be appreciated. If you need more information, feel free to ask.
Thanks!
Check if .NET Target framework version of your project is not lower than the framework used for building ABCpdf.dll.
This probably won't be too helpful at this point. But I struggled with this as well from an inherited project after a Windows Update broke a very old implementation of ABCPDF within an ASP.NET web application. I am not saying you should repeat these steps, but I am putting all these steps in here in case it helps someone else identify what they might need to do. Also, I was on ABCPDF10, but I don't see why this wouldn't work for any version.
I deleted all the ABCPDF files out of the project and bin/ manually including the ABCPDF.dlls, the ABCGecko.exe, the XUL Directory, and the PrintHooks.dlls.
I removed all the references to all those files in the proejct.csproj file
I removed all the Packages out of the ../packages for ABCPDF and ABCPDF.Gekco
I then installed 64-bit ABCPDF10, and then installed 32-bit ABCPDF10 via the MSI for each.
I then copied the files from their respective C:/Program Files directories into the bin/ of my project manually per ABCPDFs instructions. This didn't work for me because when I went to build in VS2015 it couldn't see the .DLL for some reason.
I then uninstalled it by deleting the files out of my project bin/ manually and then using Add/Remove Apps in Server2012R2.
I then used Nuget to download ABCPDF and that worked and it could build. But I still needed ABCPDF.Gekco
I then used Nuget to try and install ABCPDF.Gecko. This downloaded it, but it didn't install it fully. I manually copied over the missing .dlls and .exe into the bin/ directory and Built the project.
But at this point I got an error that it couldn't find the x64.dll even though it was in the bin/
What worked for me here is I left the Project and bin/ directory alone and I then used the .MSI installer and re-installed only the x64 version to the C:/ like any other program. I didn't have to copy any files to the bin/. I just re-built the project and boom! That worked.
It feels to me like a registry key/path issue. But I have no idea if that is right.
Hopefully that helps someone else.
I've got a C# project in visual studio that is building a DLL, and another console project which includes the first as a reference. These are both in the same solution.
The trouble is when I add methods to the DLL, then rebuild the console project doesn't seem to pick them up.
For example, in the DLL I have a class Converters. If I add a method
public static void test() {}
it just doesnt' show up in the console app at all. Intellisense doesn't autocomplete it, and if I manually type it in it gives a compiler error.
If I go in and delete the dll files then rebuild that works (or better yet, delete the bin and obj directories) but that seems rather drastic.
I'm sure this is a basic error, but I can't seem to find the solution after some googling.
How are you adding the reference? As a project reference or by browsing to the DLL? If you're using the latter then it will copy it locally to the bin directory of your console app and won't refresh it unless you manually delete it. If you add it as a project reference it will copy it as and when it needs to.
The exact thing happened to me once on a project - it turned out the build command wasn't configured to build these DLLs.
Check Build - Configuration Manager, and make sure the project is checked:
(Image from msdb - Setting the Build Configuration)
close Project visualStudio and
rebuild again your dll (other project visualStudio)
One of the things to note is the Target Framework of the Projects, if you compile your Project A with target framework different then that of Project B and it is referencing the dlls of Project A you may run into this kind of trouble. So, make sure that the target framework for both Projects is same.
Check that you don't have the ddl inside the bin folder of your project. Whilst I was adding the reference by browsing for the dll, I had forgotten that I manually copy pasted a version into that folder. No matter how many times I cleaned and rebuilt, it didn't seem to update.
Deleting that dll and re-referencing fixed the issue.
Change the reference to the dll to the Project, instead of the output.
This is certainly unexpected behavior. It sounds like the reference between the two projects is broken in some way. Two issues come to mind.
Possible problem with the reference. Try deleting the reference in solution explorer and readding the reference and seeing if that fixes things. When you re-add make sure it's a project reference and not a file reference.
It's possible that the time stamps on the files in your project are off. See if they are in the future.
check the folder which contains the reference. does it contain a refresh file with a relative path in it? if so, and if assembly names in the location pointed to by the relative path are common with those in of (project) references which should auto update, then these references no longer auto update! what you end up is a static reference to the assemblies present in the relative path contained in the refresh file.
you may also have to delete the projectreferences key in the sln file and add references afresh
I hate to beat a dead SO question but 8 years after the original question and none of the above solving the issue for me, my problem was in VS2013, but to solve it I simply removed and re-added the reference to the DLL in the project that invokes it.
I hope this helps some people in the newer VS realm having the same issue.