There are two same .dll but different version in different folder. How can I force the program to refer the version I want?

Question

I am making a plugin for a application. I installed latest version of AWS.S3 (Amazon Cloud) from NuGet. It successfully includes in the \bin\AWSSDK.S3.dll.

However, the application already has a same .dll file in the its root folder (C:\Program Files\Application\AWSSDK.S3.dll) which is in older version.
And the program shows error as my code have to run in newer version. How can I force my plugin to load the dll from assembly folder instead of root folder?

Thanks a lot

Answer 1

Hi Danielngai-6932,
You can add a probing path to your application's .config file, and it will only work if the probing path is a contained within your application's base directory.

<configuration>  
    <runtime>  
        <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">  
            <probing privatePath="bin;bin2\subbin;bin3"/>  
        </assemblyBinding>  
    </runtime>  
</configuration>  

You can also use the AppDomain.AssemblyResolve event and manually load the dependencies from your DLL directory.
More details you can refer to the following threads.
How to add folder to assembly search path at runtime in .NET?
c# Class Library Project - Load DLL from same folder?
Best Regards,
Daniel Zhang

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