计算某一路径下的所有目录或是文件数量，可以参考下面代码示例：

不管是计算目录或理文件，2个方法均带2个参数，前者是传入的是物理路径，第二个传的是布尔值的参数，即是说可以计算是否包含子目录。

目录：

 public static int DirectoryCount(string physicalPath, bool isIncludeSubDirectory)        {            int count = 0;            if (isIncludeSubDirectory)                count = Directory.GetDirectories(physicalPath, "*", SearchOption.AllDirectories).Length;            else                count = Directory.GetDirectories(physicalPath, "*", SearchOption.TopDirectoryOnly).Length;            return count;        }

Source Code

文件：

 public static int FileCount(string physicalPath, bool isIncludeSubDirectory)        {            int count = 0;            if (isIncludeSubDirectory)                count = Directory.GetFiles(physicalPath, "*.*", SearchOption.AllDirectories).Length;            else                count = Directory.GetFiles(physicalPath, "*.*", SearchOption.TopDirectoryOnly).Length;            return count;        }

Source Code