removable

问题 Windows 7 platform, C# I use the following statement to list all drives: DriveInfo[] drives = DriveInfo.GetDrives(); then I can use DriveType to find out all those removable disks: foreach (var drive in drives) { if(drive.DriveType == DriveType.Removable) yield return drive; } now my problem is, SD-card disk and USB flashdisk shared same driveType: Removable, so how can i only find USB flashdisk out? thanks! 回答1: You can take advantage of ManagementObjectSearcher using it to query the disk

问题 I've found several snippets and .pas files that can detect when USB flash drives are inserted and removed. Some give all kind of good information, however what I need is the devices' unique serial number, not the volumes' serial number. My current .pas file (which I don't remember where I found) also seems to detect SD cards (which I like). If you want a look, you can find it here (it only returns the drive number and inserted/removed): unit UsbDetector; interface uses Classes; type