C#使用相对路径copy文件

string dir = @"\\share01\Shared001\SDE Inbound Data\ProductsBuild_Installation";
            
                //Set the current directory.
            Directory.SetCurrentDirectory(dir);

            foreach (var item in Directory.EnumerateFiles(Directory.GetCurrentDirectory(), "*.*", SearchOption.AllDirectories))
            {
                Console.WriteLine(item.ToString().Replace(dir,"./"));
                File.Copy(item.ToString().Replace(dir, "./"), Path.Combine(@"C:\Users\XChen32\Desktop", Path.GetFileName(item.ToString().Replace(dir, "./"))));
            }

其中./指当前路径