Loading dlls from path specified in SetdllDirectory in c#

c, c#, winapi, windows

Solution

I'd suggest adding the directory path to PATH env variable in runtime, using the following code:

var dllDirectory = @"C:/some/path";
Environment.SetEnvironmentVariable("PATH", Environment.GetEnvironmentVariable("PATH") + ";" + dllDirectory);

That way, the change is only affecting the running process and is discarded when it exits.

Problem

I am new in dotnet.I have a dotnet dll that loads a `c` dll by using `DllImport`. I want to place all the dlls in a folder which is diffrent from the location of application. I dont want to modify environmental variables. So i used `setdlldirectory` API and load my c# assembly through `Assembly.Loadfrom(..)`. I checked that `SetdllDirectory` is working fine by verifying the value of `GetDllDirectory(..)`. But it is neither loading C# dll nor c dll from that folder. I am able to load `C#` dll by specyfing the path in `Assembly.Loadfrom`. But not able to load c dll. Thanks in advance!!

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