AppDomain does not create shadow files

Question

AppDomain does not create shadow files

I understand that a loaded assembly cannot be unloaded directly, so I created a temporary domain and a loaded assembly, but I had an error creating shadow files.

The code I wrote is as follows:

[LoaderOptimization(LoaderOptimization.MultiDomainHost)]
[STAThread]
static void Main(string[] args)
{
    string startupPath = @"D:\Temp\MyLib\bin\Debug";
    string cachePath = Path.Combine(startupPath, "__cache");
    string assembly = Path.Combine(startupPath, "MyLib.dll");

    AppDomainSetup setup = new AppDomainSetup();
    setup.ApplicationName = "MyLIb";
    setup.ShadowCopyFiles = "true";
    setup.CachePath = cachePath;

    AppDomain domain = AppDomain.CreateDomain("MyLIb", AppDomain.CurrentDomain.Evidence, setup);

    var np = FindFileInPath("MyLib.dll", cachePath);
    var ass = Assembly.LoadFile(np);
    var types = ass.GetTypes();
    AppDomain.Unload(domain);
    }

I had an error while searching for a file on the path "could not find part of the path" D: \ Temp \ MyLib \ bin \ Debug__cache. "

public static string FindFileInPath(string filename, string path)
{
   filename = filename.ToLower();

   foreach (var fullFile in Directory.GetFiles(path))
   {
       var file = Path.GetFileName(fullFile).ToLower();
       if (file == filename)
           return fullFile;

   }
   foreach (var dir in Directory.GetDirectories(path))
   {
       var file = FindFileInPath(filename, dir);
       if (!string.IsNullOrEmpty(file))
                return file;
        }

        return null;
    }
  }