I have added third party reference (Json newtonsoft) dll in my script component (using edit script option), but when i run the package, I am getting an error
Could not load file or assembly 'Newtonsoft.Json, Version=4.5.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies. The system cannot find the file specified.
Any suggestions?
I will not be able to add the dll in GAC.
I am using SQL Server 2008.
By "Running," I assume running from agent/command-line is failing? It should work from within BIDS/SSDT. The short answer is the DLL must be registered with the GAC or you can download the source code and add that project into the script task and then reference said project.
Looking at the project, it should be a strongly signed DLL (based on presences of Dynamic.snk) and thus capable of being added to the GAC. Oh, but you state you will not be able to add it into the GAC, implying it's a permission not a capability issue.
If that's the case, either compile the project in with the source or surround it with a web service wrapper and then reference the service.
I also saw this answer, seems you can try loading the references dynamically.
Automated deployment of mixed SSIS / DLL solution
You can using Reflection to load dll at runtime from file system without needing to install in GAC . This is helpful if permission to install in GAC is not availaible .
//Add a Static Constructor which is guaranteed to be called exactly once
// “before the first instance is created or any static members are referenced.”,
// so therefore before the dependent assemblies are loaded.
static ScriptMain()
{
AppDomain.CurrentDomain.AssemblyResolve += new ResolveEventHandler(CurrentDomain_AssemblyResolve);
}
//Provide path to dll stored in folder on file system
static System.Reflection.Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
{
string path = #"D:\DLL\";
return System.Reflection.Assembly.LoadFile(System.IO.Path.Combine(path, "Newtonsoft.dll"));
}
Ofcourse you need to also Add Reference to dll in script task .
Related
I'm building a COM Visible Object that needs to get called from a software written in Sybase Powerbuilder 11.5.
I'm using C# and .Net Framework 4.7.2.
I ususally build this kind of objects with no problem and register them using regasm /codebase because that's the way Powerbuilder likes them.
Now I'm trying to build an object that references the latest version of these nuget packages:
Microsoft.Graph
Microsoft.Graph.Auth
Microsoft.IdentityModel.Clients.ActiveDirectory
Graph.Community
I have my class library project with a com visible class.
I built a console application that references that library (it does not use COM server) to test the code and everything works fine on my development machine from the command line.
I can also run the console application from my target machin with no issues.
When I try to run the Powerbuilder application that uses the COM object, it throws an error:
Could not load file or assembly 'Microsoft.Graph.Core, Version=1.23.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies.
I have that dll in assembly's folder, but it is version 1.24.0.0.
I have two questions:
Why does the console application work while the COM object doesn't, given that they are using the same assemblies?
How I solve this versioning problem in the COM version of the object?
I found the solution to the problem but did not fully understand it.
It was a cross reference problem, where packages A and B were both dependent on package C, but required different versions.
I don't understand why this error shows up only when using COM Interface and not with the console application.
Here is what I did to solve:
// Define the AssemblyResolve event in the constructor of the COM Object.
AppDomain.CurrentDomain.AssemblyResolve += new ResolveEventHandler(CurrentDomain_AssemblyResolve);
// Get the path where COM Object's dll is
string codeBase = Assembly.GetExecutingAssembly().CodeBase;
UriBuilder uri = new UriBuilder(codeBase);
string path = Uri.UnescapeDataString(uri.Path);
_dllPath = System.IO.Path.GetDirectoryName(path);
Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
{
// Get the name of the assembly that failed loading
var name = new AssemblyName(args.Name);
// Manage the assembly that I know will cause problems
string bindingAssembly = "Microsoft.Graph.Core";
if (name.Name == bindingAssembly)
{
// Load the assembly from the COM Object's folder, and use whatever version there is
return Assembly.LoadFrom(System.IO.Path.Combine(_dllPath, bindingAssembly + ".dll"));
}
// I should not get here. If I do I need to add another manual assembly load for the dll that failed loading
return null;
}
I'm running a program in C# .Net, WPF, and having this problem: if I try to load a dll dynamically from the GAC and it's not presente, the system show an error, then I install the dll in the GAC and system still isn't able to find it. But, if just restart the system, whitout changing anything, it find's the DLL.
For more details, in an async thread, I call one dll dynamically from the GAC, and this dll calls another DLLs dynamically, and are those "second" dlls that are causing this problem.
The dlls are being called using the following:
var classType = Type.GetType(fullyQualifiedName, true);
T assemblyClass = (T)Activator.CreateInstance(classType);
Also, the "fullyQualifiedName" follows the format:
NameSpace.Class, AssemblyName, Version=1.0.0.0, Culture=neutral, PublicKeyToken=number of the token, processorArchitecture=x86
And the "assemblyClass" is cast to an interface.
Thanks in advance.
I have added third party reference (Json newtonsoft) dll in my script component (using edit script option), but when i run the package, I am getting an error
Could not load file or assembly 'Newtonsoft.Json, Version=4.5.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies. The system cannot find the file specified.
Any suggestions?
I will not be able to add the dll in GAC.
I am using SQL Server 2008.
By "Running," I assume running from agent/command-line is failing? It should work from within BIDS/SSDT. The short answer is the DLL must be registered with the GAC or you can download the source code and add that project into the script task and then reference said project.
Looking at the project, it should be a strongly signed DLL (based on presences of Dynamic.snk) and thus capable of being added to the GAC. Oh, but you state you will not be able to add it into the GAC, implying it's a permission not a capability issue.
If that's the case, either compile the project in with the source or surround it with a web service wrapper and then reference the service.
I also saw this answer, seems you can try loading the references dynamically.
Automated deployment of mixed SSIS / DLL solution
You can using Reflection to load dll at runtime from file system without needing to install in GAC . This is helpful if permission to install in GAC is not availaible .
//Add a Static Constructor which is guaranteed to be called exactly once
// “before the first instance is created or any static members are referenced.”,
// so therefore before the dependent assemblies are loaded.
static ScriptMain()
{
AppDomain.CurrentDomain.AssemblyResolve += new ResolveEventHandler(CurrentDomain_AssemblyResolve);
}
//Provide path to dll stored in folder on file system
static System.Reflection.Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
{
string path = #"D:\DLL\";
return System.Reflection.Assembly.LoadFile(System.IO.Path.Combine(path, "Newtonsoft.dll"));
}
Ofcourse you need to also Add Reference to dll in script task .
There are several questions out there that ask the same question. However the answers they received I cannot understand. Similar questions:
Dynamically Load Assembly and manually force path to get referenced assemblies ;
Loading assemblies and its dependencies
The question in short:
I need to figure out how dependencies, ie References in my modules can be loaded dynamically. Right now I am getting "The system cannot find the file specified" on Assemblies referenced in my so called modules.
I cannot really understand how to use the AssemblyResolve event.
The longer version
I have one application, MODULECONTROLLER, that loads separate modules.
These "separate modules" are located in well-known subdirectories, like
appBinDir\Modules\Module1
appBinDir\Modules\Module2
Each directory contains all the DLLs that exists in the bin-directory of those projects after a build.
So the MODULECONTROLLER loads all the DLLs contained in those folders using this code:
byte[] bytes = File.ReadAllBytes(dllFileFullPath);
Assembly assembly = null;
assembly = Assembly.Load(bytes);
I am, as you can see, loading the byte[]-array (so I don't lock the DLL-files).
Now, in for example MODULE1, I have a static reference called MyGreatXmlProtocol. The MyGreatXmlProtocol.dll then also exists in the directory appBinDir\Modules\Module1 and is loaded using the above code
When code in the MODULE1 tries to use this MyGreatXmlProtocol, I get:
Could not load file or assembly 'MyGreatXmlProtocol, Version=1.0.3797.26527, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.
So, in a post (like this one) they say that
To my understanding reflection will
load the main assembly and then search
the GAC for the referenced assemblies,
if it cannot find it there, you can
then incorparate an assemblyResolve
event:
First; is it really needed to use the AssemblyResolve-event to make this work? Shouldn't my different MODULEs themself load their DLLs, as they are statically referenced?
Second; if AssemblyResolve is the way to go - how do I use it? I have attached a handler to the Event but I never get anything on MyGreatXmlProctol.
Edit
Code regarding the AssemblyResolve-event handler:
public GUI()
{
InitializeComponent();
AppDomain.CurrentDomain.AssemblyResolve += new ResolveEventHandler(CurrentDomain_AssemblyResolve);
...
}
//
Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
{
Console.WriteLine(args.Name);
return null;
}
try to do assembly = Assembly.Load(bytes); to MyGreatXmlProtocol assembly. I read somewhere that if you load assembly by byte array you have to resolve dependencies manually.
I have created a windows service in C# VS2008 that uses a reference to an external class library to wrote. I have added the reference to it in VS2008. When I run start the service it throws an exception when trying to access the external DLL:
Could not load file or assembly 'vcribAPI, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.
The DLL is in the same directory as the service.exe file. Is there something special that I need to do for windows services like putting the DLL in another directory?
It could be that vcribAPI.dll relies on other assemblies as well. I suggest using Reflector and open up the dll to see what other dll's it might reference.
I encountered exactly the same error.
The working directory of services is different from the application directory (typically C:\Windows\System32).
For example, the method AssemblyName.GetAssemblyName throws a FileNotFoundException if you try to locate an assembly deployed in the application directory.
In this case, the solution is to define Environment.CurrentDirectory with the application directory before assembly loading.
Sample code :
const string SCHEMA_FILE = #"file:\";
var appAssembly = Assembly.GetExecutingAssembly();
var path = Path.GetDirectoryName(appAssembly.CodeBase);
if (path.StartsWith(SCHEMA_FILE))
path = path.Remove(0, SCHEMA_FILE.Length);
Environment.CurrentDirectory = path;
Does you service have rights to read in the folder?
Does the assembly have other dlls or assemblies it depends on?
If so, they also need to be in this directory.
To be certain, start up the Assembly Loader Log (fusion log). See this howto (Debugging Assembly Loading Failures).