string path = "文件或文件夹路径";
// 检查指定路径是文件还是目录
if (File.Exists(path))
{
    FileSystem.DeleteFile(path, UIOption.OnlyErrorDialogs, RecycleOption.SendToRecycleBin);
}
else if (Directory.Exists(path))
{
    FileSystem.DeleteDirectory(path, UIOption.OnlyErrorDialogs, RecycleOption.SendToRecycleBin);
}