I'm writing a WebService that references another managed DLL which then uses a third-party DLL. When I start debugging my WebService I get the following error:
Could not load file or assembly 'AForge.Video.FFMPEG.DLL' or one of
its dependencies.
As recommended in many other posts, I tried these steps:
Changed from AnyCPU to x86
Copied all DLLs to %system32% directory
But had no success so far. Any ideas?
Thanks, Matthias
Could not load file or assembly 'AForge.Video.FFMPEG.DLL' or one of its dependencies.
You are either copying the file(s) to the wrong place or not copying the correct files.
Get to the bottom of this by downloading Dependency Walker
You can then drag AForge.Video.FFMPEG.DLL into the application and it will tell you what is missing.
Also, determine the base directory for your application to ensure you are copying the files to the correct folder at runtime. You can do this by writing System.AppDomain.CurrentDomain.BaseDirectory to the console (or add it to your watch)
Also see this
I re-engineered the project structure in VisualStudio to get rid of the dependency to AForder.Video.FFMPEG.DLL. That helped. I found no other solution so far.
Related
To easily distribute the software to clients, I have to use Ilmerge to combine everything into single exe file, including some dll files e.g. System.Data.SQLite.
When I tried to run the merged exe file, quickly I ran into one issue, it shows the error message "Unable to load DLL System.Data.SQLite.dll. The specified module could not be found." This could be solved by putting this dll file same directory with exe file.
However, this is not an ideal way for me. I had tried to browse my exe file and I am pretty sure that System.Data.SQLite already embed inside. The result I get from google is because System.Data.SQLite is not managed code and cannot be mixed
I have tested csharp-sqlite, but that's look like totally different library for me. Is there any quick way to solve my problem?
I used Inno Setup before and I added System.Data.SQLite.dll as well. Give it try using Inno Setup and see if you will run into the same problem.
I am getting this error:
Could not load file or assembly, system could not find the file specified.
Images:
http://s30.postimg.org/4x936f6ch/error2.png
http://s17.postimg.org/41ta9aaj3/errro3.png
I have a solution built in .NET 4.0
In it I have projects that act as plugins. They use dlls and the issue is that one of the solutions projects dlls is being called, and that references the dll that is causing the issue.
I get no error when rebuilding etc just when the program gets to the part where it uses the dll that references this one.
I have also made sure that in the projects bin folder that it has the dll that it is complaining about.
I have opened the dll in reflector and I don't think it has any issues.
COuld someone point me to the next step to try with fixing this issue?
Thanks!
Couple of tips - hard to know if they'll help you:
Open the csproj file(s) in a text editor and see where the dlls are being referenced (GAC possibly)
If it's a signed assembly, make sure you've got a signed copy (if you've built an Open Source project yourself the signing will be lost)
Look at the references in Visual Studio - do you have Copy Local set to True and Specific Version set to False?
Look at you're App.config or Web.config - is there a binding redirect that failing to load
I remember reading a post about assemblies not being able to be unloaded - probably not an issue on this one but I think the trick was
to load the DLL in a separate AppDomain to keep it isolated - loadable
and unloadable.
I am using Nmodbus to setup an implementation, and everytime I try to run one of the instances in the code I am prompted with the following error
unable to load DLL 'FTD2XX.dll': The specified module could not be found
I have searched through my system32 folder and copied and pasted a copy of the above DLL in there, and it is also in the folders corresponding to the C# solution. I can see it, it is there, but why am I being prompted with this error?
Aren't you mixing 32bit code with 64bit? Try changing target from AnyCPU to 32bits.
I am trying to make a simple c# program using Growl C# API.
I tried to compile my program in two different ways:
1) I kept my .dll file in the same directory as my .cs file. Than I ran
csc /r:Growl.Connector.dll,Growl.CoreLibrary.dll /out:test.exe *.cs
It compiled fine and also ran fine.
2) Now I have created a directory inside my current working directory named growl and kept all my .dll references there.
Now when I try to compile it using the below command
csc /r:"D:\Modified\Growl_NET_Connector_SDK\libraries\growl\Growl.Connector.dll","D:
\Modified\Growl_NET_Connector_SDK\libraries\growl\Growl.CoreLibrary.dll" /out:test.exe *.cs
It compiled fine but when I tried to run it the below mentioned exception occurred.
Unhandled Exception: System.IO.FileNotFoundException: Could not load file or assembly 'Growl.Connector, Version=2.0.0.0, Culture=n
eutral, PublicKeyToken=980c2339411be384' or one of its dependencies. The system cannot find the file specified.
at GrowlNotification.Program.Main(String[] args)
So, my question is what is the correct way to reference .dll file in csc when files are in an external folder.
Here is the directory structure for 2nd case.
So, my question is what is the correct way to reference .dll file in csc when files are in an external folder.
You're already referencing them at build time. You just need to make them available at execution time too, but copying them into the same directory as the executable, when you want to run it.
You could also investigate using the Global Assembly Cache if these are signed assemblies, but personally I'd stick with just keeping the executable with the libraries on which it depends.
You can add these using the /lib and /reference command-line switches while compiling.
http://msdn.microsoft.com/en-us/library/s5bac5fx.aspx
But (Quote from the article)
An alternative to using /lib is to copy into the working directory any
required assemblies; this will allow you to simply pass the assembly
name to /reference. You can then delete the assemblies from the
working directory. Since the path to the dependent assembly is not
specified in the assembly manifest, the application can be started on
the target computer and will find and use the assembly in the global
assembly cache.
Because the compiler can reference the assembly does not imply the
common language runtime will be able to find and load the assembly at
runtime. See How the Runtime Locates Assemblies for details on how the
runtime searches for referenced assemblies.
so Jon Skeet's answer is better. (I'm just adding this to provide more info than I could in a comment, not as an answer. Jon's answer is the best IMO)
You can create symlinks to the assemblies in your libraries folder so you would only need to keep them updated in one location.
I've created a new Silverlight 3 from template and started a debugging session. However, when I looked to the modules window I saw the following:
The path to my Silverlight3Application.dll was lacking (even though the pdb was found just fine). I made sure that it isn't just a UI issue, indeed I could delete the Silverlight3Application.dll file that was located next to the PDB just fine without any issues.
Questions:
Where is my DLL actually loaded from UPDATE in runtime?
Why isn't it loaded from the expected location?
Is it possible to make it load from the location next to the PDB file, where I actually expected it to load from?
Update 1
What I really need is to find out the location of my Silverlight3Application.dll in runtime, using Reflection, for example.
However, just as the modules window hides the real location, so does reflection:
Assembly: {Silverlight3Application, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null} System.Reflection.Assembly {System.Reflection.RuntimeAssembly}
FullName: "Silverlight3Application, Version=1.0.0.0, Culture=neutral,
publicKeyToken=null" string
ImageRuntimeVersion: "v2.0.50727" string
IsDynamic: false bool
Location: "" string
I've tried located this assembly manually using Prcocess Explorer and its location seemed rather random:
C:\Users\Vitaly\AppData\Local\assembly\dl3\G1KDTYO5.XJ3\6GQ19BER.4OW\5e5cbf28\50366acf_1a3ecc01\Silverlight3Application.dll
Anyone knows how I can find the location of the assembly in runtime? If nothing else works, using external tools is an option, however, I must be able to execute the tool from code. I'll be happy to hear ideas.
Thanks!
By default, Silvelight DLL is located in \Bin\Debug of your Silverlight project.
If you want to see where an actuall DLL is loaded from:
output path is visible in Visual Studio Output Window during build
use ProcessMonitor.
Also see http://msdn.microsoft.com/en-us/library/cc838164%28v=vs.95%29.aspx for detailed description of Silverlight project structure.
To your Update1: see How do I get the path of the assembly the code is in?
Have you considered how the assembly is actually executed in your browser? It comes from a .XAP file, not via any DLLs built/stored under your project folders. More specifically, your project builds a DLL, which is then packaged into the XAP file, which is in turn served to your web browser, which unpacks the XAP file, reads the manifest, and loads the specified DLL entry point.
The path to the DLL from the XAP root is, well, the file name (unless you've done customized the XAP yourself). That's probably why there isn't any path specified.