C#监控USB接口

该C#代码实现监控USB接口是否有设备接入或拨出，包括多个U盘。

  1 using System;
  2 using System.IO;
  3 using System.Runtime.InteropServices;
  4 using System.Windows.Forms;
  5 
  6 namespace MyApplication
  7 {
  8     public partial class Form1 : Form
  9     {
 10         const int WM_DEVICECHANGE = 0x0219; // 发生设备变动
 11         const int DBT_DEVICEARRIVAL = 0x8000; // 系统检测到一个新设备
 12         const int DBT_DEVTYP_VOLUME = 0x00000002; // 逻辑卷标
 13         const int DBT_CONFIGCHANGECANCELED = 0x0019;
 14         const int DBT_CONFIGCHANGED = 0x0018;
 15         const int DBT_CUSTOMEVENT = 0x8006;
 16         const int DBT_DEVICEQUERYREMOVE = 0x8001;
 17         const int DBT_DEVICEQUERYREMOVEFAILED = 0x8002; // 系统完成移除一个设备
 18         const int DBT_DEVICEREMOVECOMPLETE = 0x8004;
 19         const int DBT_DEVICEREMOVEPENDING = 0x8003;
 20         const int DBT_DEVICETYPESPECIFIC = 0x8005;
 21         const int DBT_DEVNODES_CHANGED = 0x0007;
 22         const int DBT_QUERYCHANGECONFIG = 0x0017;
 23         const int DBT_USERDEFINED = 0xFFFF;
 24 
 25         [StructLayout(LayoutKind.Sequential)]
 26         public struct DEV_BROADCAST_VOLUME
 27         {
 28             public int dbcv_size;
 29             public int dbcv_devicetype;
 30             public int dbcv_reserved;
 31             public int dbcv_unitmask;
 32         }
 33 
 34         public Form1()
 35         {
 36             InitializeComponent();
 37         }
 38 
 39         protected override void WndProc(ref Message m)
 40         {
 41             if (m.Msg == WM_DEVICECHANGE)
 42             {
 43                 switch (m.WParam.ToInt32())
 44                 {
 45                     case WM_DEVICECHANGE:
 46                         break;
 47                     case DBT_DEVICEARRIVAL://U disk upload  
 48                         DriveInfo[] s = DriveInfo.GetDrives();
 49                         foreach (DriveInfo drive in s)
 50                         {
 51                             if (drive.DriveType == DriveType.Removable)
 52                             {
 53                                 Console.WriteLine("==================================================");
 54                                 Console.WriteLine("the U disk in! ，name:" + drive.Name.ToString());
 55                                 break;
 56                             }
 57                         }
 58                         Console.WriteLine("==================================================");
 59                         break;
 60                     case DBT_CONFIGCHANGECANCELED:
 61                         break;
 62                     case DBT_CONFIGCHANGED:
 63                         break;
 64                     case DBT_CUSTOMEVENT:
 65                         break;
 66                     case DBT_DEVICEQUERYREMOVE:
 67                         break;
 68                     case DBT_DEVICEQUERYREMOVEFAILED:
 69                         break;
 70                     case DBT_DEVICEREMOVECOMPLETE: //U disk is out  
 71                         DriveInfo[] I = DriveInfo.GetDrives();
 72                         foreach (DriveInfo DrInfo in I)
 73                         {
 74                             int devType = Marshal.ReadInt32(m.LParam, 4);
 75                             if (devType == DBT_DEVTYP_VOLUME)
 76                             {
 77                                 DEV_BROADCAST_VOLUME vol;
 78                                 vol = (DEV_BROADCAST_VOLUME)Marshal.PtrToStructure(m.LParam, typeof(DEV_BROADCAST_VOLUME));
 79                                 string ID = vol.dbcv_unitmask.ToString("x");
 80                                 Console.WriteLine(IO(ID) + ": U disk out！");
 81                             }
 82                         }
 83                         break;
 84                     case DBT_DEVICEREMOVEPENDING:
 85                         break;
 86                     case DBT_DEVICETYPESPECIFIC:
 87                         break;
 88                     case DBT_DEVNODES_CHANGED:
 89                         break;
 90                     case DBT_QUERYCHANGECONFIG:
 91                         break;
 92                     case DBT_USERDEFINED:
 93                         break;
 94                     default:
 95                         break;
 96                 }
 97             }
 98             base.WndProc(ref m);
 99         }
100 
101         public string IO(string IO)
102         {
103             string Value = "";
104             switch (IO)
105             {
106                 case "1":
107                     Value = "A:";
108                     break;
109                 case "2":
110                     Value = "B:";
111                     break;
112                 case "4":
113                     Value = "C:";
114                     break;
115                 case "8":
116                     Value = "D:";
117                     break;
118                 case "10":
119                     Value = "E:";
120                     break;
121                 case "20":
122                     Value = "F:";
123                     break;
124                 case "40":
125                     Value = "G:";
126                     break;
127                 case "80":
128                     Value = "H:";
129                     break;
130                 case "100":
131                     Value = "I:";
132                     break;
133                 case "200":
134                     Value = "J:";
135                     break;
136                 case "400":
137                     Value = "K:";
138                     break;
139                 case "800":
140                     Value = "L:";
141                     break;
142                 case "1000":
143                     Value = "M:";
144                     break;
145                 case "2000":
146                     Value = "N:";
147                     break;
148                 case "4000":
149                     Value = "O:";
150                     break;
151                 case "8000":
152                     Value = "P:";
153                     break;
154                 case "10000":
155                     Value = "Q:";
156                     break;
157                 case "20000":
158                     Value = "R:";
159                     break;
160                 case "40000":
161                     Value = "S:";
162                     break;
163                 case "80000":
164                     Value = "T:";
165                     break;
166                 case "100000":
167                     Value = "U:";
168                     break;
169                 case "200000":
170                     Value = "V:";
171                     break;
172                 case "400000":
173                     Value = "W:";
174                     break;
175                 case "800000":
176                     Value = "X:";
177                     break;
178                 case "1000000":
179                     Value = "Y:";
180                     break;
181                 case "2000000":
182                     Value = "Z:";
183                     break;
184                 default: break;
185             }
186             return Value;
187         }
188     }
189 }

 

posted @ 2016-03-04 16:40  如意猴™  阅读(833)  评论(0)  编辑  收藏  举报