C#小技巧系列之一：获取系统有关信息

说明：本人准备写一些C#有关的小技巧系列文章，这些文章含金量并不高，代码难度不大，不过因为问的次数比较多，从而导致本人决定用自己所知的方式写这一系列文章，可以看做“趣味导学”系列吧。

 要展示的第一个例子就是获取系统磁盘情况和操作系统名称，获取的信息包括本机上所有磁盘盘符，磁盘类型（软驱、硬盘分区、光盘），磁盘文件类型（FAT32/NSFS），磁盘空间总大小及剩余空间大小等。为了方便查看代码，用控制台式编写。代码如下：

using  System;
using  System.Collections.Generic;
using  System.Text;
using  System.IO;

namespace  LocalDriveInfo
... {
    class Program
    ...{
        static void Main(string[] args)
        ...{
            string[] drives = System.Environment.GetLogicalDrives();
            DriveInfo driveInfo = null;
            System.Console.WriteLine(GetOperationSystemInName());
            System.Console.WriteLine("卷标 盘符 类型 文件系统 总大小(byte) 可用空间大小(byte)");
            for (int i = 0; i < drives.Length; i++)
            ...{
                driveInfo = new DriveInfo(drives[i]);
                if (driveInfo.IsReady)
                ...{
                    System.Console.WriteLine("{0} {1} {2} {3} {4} {5}", driveInfo.VolumeLabel, driveInfo.Name,
                        driveInfo.DriveType, driveInfo.DriveFormat, driveInfo.TotalSize.ToString("###,###") /**//*/ (1024 * 1024)*/, driveInfo.AvailableFreeSpace.ToString("###,###") /**//*/ (1024*1024))*/);
                }
                else
                ...{
                    System.Console.WriteLine("{0} {1} {2} {3} {4} {5}", "", driveInfo.Name,
                        driveInfo.DriveType, "", "", "", "");
                }
            }
            System.Console.ReadLine();
        }

        /**///// <summary>
        /// 获取系统名称
        /// </summary>
        /// <returns></returns>
        public static string GetOperationSystemInName()
        ...{
            OperatingSystem os = System.Environment.OSVersion;
            string osName = "UNKNOWN";
            switch (os.Platform)
            ...{
                case PlatformID.Win32Windows:
                    switch (os.Version.Minor)
                    ...{
                        case 0: osName = "Windows 95"; break;
                        case 10: osName = "Windows 98"; break;
                        case 90: osName = "Windows ME"; break;
                    }
                    break;
                case PlatformID.Win32NT:
                    switch (os.Version.Major)
                    ...{
                        case 3: osName = "Windws NT 3.51"; break;
                        case 4: osName = "Windows NT 4"; break;
                        case 5: if (os.Version.Minor == 0)
                            ...{
                                osName = "Windows 2000";
                            }
                            else if (os.Version.Minor == 1)
                            ...{
                                osName = "Windows XP";
                            }
                            else if (os.Version.Minor == 2)
                            ...{
                                osName = "Windows Server 2003";
                            }
                            break;
                        case 6: osName = "Longhorn"; break;
                    }
                    break;
            }
            return String.Format("{0},{1}", osName, os.Version.ToString());
        }
    }
}