Question

I have a dll called test and within test.dll, I’m referencing another dll called process. Now when I try loading test.dll, I get the error “System cannot find process.dll.
Please help

Assembly u = Assembly.LoadFile(@"C:\test\test.dll");

        Type t = u.GetType("Test.Process");
        MethodInfo m = t.GetMethod("ProcessFile");

        try
        {
            object[] myparam = new object[1];
            myparam[0] = @"C:\test\testFile.csv";

            result = (string)m.Invoke(null, myparam);

            Console.WriteLine(result);
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message.ToString());
            Console.WriteLine(ex.InnerException.ToString());
            System.Threading.Thread.Sleep(100000);
        }

Answer 1

I suspect you want LoadFrom instead of LoadFile in this case. The difference is that the extra path (c:\test) will be added to the “load from” context which will then be used for dependencies such as process.dll.

At the moment, it’s trying to resolve process.dll without taking c:\test into consideration. Read the linked documentation for more information.