光驱的辨认

Question

我想写一个方法能获得U盘盘符。（给朋友写的程序要求不太高）想不出想了个曲线救国的办法。查看最后一个盘是不是光驱。是的话返回Null,不是的话返回盘符。
各位高手支下招这该怎么写。谢谢啦PS：表问万一用户没有光驱怎么办……我只给他一个人用，所以肯定有光驱的。

Answer 1

 public string GetDriveOfCDROM()
        {
            System.IO.DriveInfo[] _DriveList = System.IO.DriveInfo.GetDrives();
            if (_DriveList[_DriveList.Length - 1].DriveType == DriveType.CDRom) return null;
            return _DriveList[_DriveList.Length - 1].Name;
        }这样?

Answer 2

//C#获取插入U盘盘符，网上帮你找到的using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;namespace Udish
{
    public partial class Form1 : Form
    {
        public const int WM_DEVICECHANGE = 0x219;
        public const int DBT_DEVICEARRIVAL = 0x8000;    //如果m.Msg的值为0x8000那么表示有U盘插入
        public const int DBT_CONFIGCHANGECANCELED = 0x0019;
        public const int DBT_CONFIGCHANGED = 0x0018;
        public const int DBT_CUSTOMEVENT = 0x8006;
        public const int DBT_DEVICEQUERYREMOVE = 0x8001;
        public const int DBT_DEVICEQUERYREMOVEFAILED = 0x8002;
        public const int DBT_DEVICEREMOVECOMPLETE = 0X8004;
        public const int DBT_DEVICEREMOVEPENDING = 0x8003;
        public const int DBT_DEVICETYPESPECIFIC = 0x8005;
        public const int DBT_DEVNODES_CHANGED = 0x0007;
        public const int DBT_QUERYCHANGECONFIG = 0x0017;
        public const int DBT_USERDEFINED = 0xFFFF;        public Form1()
        {
            InitializeComponent();
        }        private void Form1_Load(object sender, EventArgs e)
        {
        }        public Message mm;        /// <summary>
        /// 监视Windows消息
        /// </summary>
        /// <param name="m"></param>
        protected override void WndProc(ref Message m)
        {
            try
            {
                if (m.Msg == WM_DEVICECHANGE)
                {
                    switch (m.WParam.ToInt32())
                    {
                        case WM_DEVICECHANGE:
                            break;
                        case DBT_DEVICEARRIVAL:         //U盘插入
                            String[] strDrivers = Environment.GetLogicalDrives();
                            listBox1.Items.Add("U盘已插入,盘符为:" + strDrivers[strDrivers.Count()-1]);
                            break;
                        case DBT_CONFIGCHANGECANCELED:
                            break;
                        case DBT_CONFIGCHANGED:
                            break;
                        case DBT_CUSTOMEVENT:
                            break;
                        case DBT_DEVICEQUERYREMOVE:
                            break;
                        case DBT_DEVICEQUERYREMOVEFAILED:
                            break;
                        case DBT_DEVICEREMOVECOMPLETE:   //U盘卸载
                            break;
                        case DBT_DEVICEREMOVEPENDING:
                            break;
                        case DBT_DEVNODES_CHANGED:
                            break;
                        case DBT_QUERYCHANGECONFIG:
                            break;
                        case DBT_USERDEFINED:
                            break;
                        default:
                            break;
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            base.WndProc(ref m); //将系统消息传递自父类的WndProc
        }
    }
}
 

Answer 3

//再发个
using System.IO;
            DriveInfo[] allDrives = DriveInfo.GetDrives();            foreach (DriveInfo d in allDrives)
            {
                Console.WriteLine("Drive {0}", d.Name);
                Console.WriteLine("  File type: {0}", d.DriveType);
            }            Console.WriteLine("---------------------");            foreach (DriveInfo d in allDrives)
            {
                //判断是不是U盘
                if (d.DriveType == DriveType.Removable)
                {
                    Console.WriteLine("Drive {0}", d.Name);
                }
            }            Console.ReadLine();