C# 复制文件夹

static void CopyDirectory(string srcDir, string tgtDir)
{
    DirectoryInfo source = new DirectoryInfo(srcDir);
    DirectoryInfo target = new DirectoryInfo(tgtDir);

    if (target.FullName.StartsWith(source.FullName, StringComparison.CurrentCultureIgnoreCase))
    {
        throw new Exception("父目录不能拷贝到子目录！");
    }

    if (!source.Exists)
    {
        return;
    }

    if (!target.Exists)
    {
        target.Create();
    }

    FileInfo[] files = source.GetFiles();

    for (int i = 0; i < files.Length; i++)
    {
        File.Copy(files[i].FullName, target.FullName + @"\" + files[i].Name, true);
    }

    DirectoryInfo[] dirs = source.GetDirectories();

    for (int j = 0; j < dirs.Length; j++)
    {
        CopyDirectory(dirs[j].FullName, target.FullName + @"\" + dirs[j].Name);
    }
}