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; }
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; }
原文：http://www.cnblogs.com/insus/p/6754571.html
