启动时将所有文件和子文件夹从目录 A 复制到控制器 B

试试这个

class Program
{
    static void Main(string[] args)
    {
        string sourceDirectory = @"C:\temp\source";
        string targetDirectory = @"C:\temp\destination";

        Copy(sourceDirectory, targetDirectory);

        Console.WriteLine("\r\nEnd of program");
        Console.ReadKey();
    }

    public static void Copy(string sourceDirectory, string targetDirectory)
    {
        var diSource = new DirectoryInfo(sourceDirectory);
        var diTarget = new DirectoryInfo(targetDirectory);

        CopyAll(diSource, diTarget);
    }

    public static void CopyAll(DirectoryInfo source, DirectoryInfo target)
    {
        Directory.CreateDirectory(target.FullName);

        // Copy each file into the new directory.
        foreach (FileInfo fi in source.GetFiles())
        {
            Console.WriteLine(@"Copying {0}\{1}", target.FullName, fi.Name);
            fi.CopyTo(Path.Combine(target.FullName, fi.Name), true);
        }

        // Copy each subdirectory using recursion.
        foreach (DirectoryInfo diSourceSubDir in source.GetDirectories())
        {
            DirectoryInfo nextTargetSubDir =
                target.CreateSubdirectory(diSourceSubDir.Name);
            CopyAll(diSourceSubDir, nextTargetSubDir);
        }
    }
}