创建目录文件夹

// 创建目录c:\sixAge   
            DirectoryInfo d = Directory.CreateDirectory("c:\\sixAge");   
            // d1指向c:\sixAge\sixAge1   
            DirectoryInfo d1=  d.CreateSubdirectory("sixAge1");   
            // d2指向c:\sixAge\sixAge1\sixAge1_1   
            DirectoryInfo d2=  d1.CreateSubdirectory("sixAge1_1");   
            // 将当前目录设为c:\sixAge   
            Directory.SetCurrentDirectory("c:\\sixAge");   
            // 创建目录c:\sixAge\sixAge2   
            Directory.CreateDirectory("sixAge2");   
            // 创建目录c:\sixAge\sixAge2\sixAge2_1   
            Directory.CreateDirectory("sixAge2\\sixAge2_1");