C # obtain the drive letter of a Removable device

1   Using System;
 2   Using System. Collections. Generic;
 3   Using System. componentmodel;
 4   Using System. Data;
 5   Using System. drawing;
 6   Using System. LINQ;
7   Using System. text;
 8   Using System. Windows. forms;
 9   Using Javesystem;
 10   Using System. Management;
 11   Using System. IO;
 12   Using Microsoft. Win32;
13  
 14   Namespace Animationworldupdate
 15 {
 16       Public   Partial   Class Form_getremovabledeviceid: Form
 17 {
 18  
 19           Public List < String > Getremovabledeviceid ()
 20 {
 21 List < String > Deviceids = New List < String > ();
 22 Managementobjectsearcher query = New Managementobjectsearcher ( "  Select * From win32_logicaldisk  " );
23 Managementobjectcollection querycollection = query. Get ();
 24               Foreach (Managementobject Mo In Querycollection)
 25 {
 26                   Switch ( Int . Parse (Mo [ "  Drivetype  " ]. Tostring ()))
 27 {
 28                       Case ( Int ) Drivetype. removable: //  The disk can be moved.  
  29 {
 30                               //  MessageBox. Show ("removable disk ");  
  31 Deviceids. Add (Mo [ " DeviceID  " ]. Tostring ());
 32                               Break ;
 33 }
 34                       //  Case (INT) drivetype. Fixed:  //  Local disk
  35   //  {
  36   // //  MessageBox. Show ("Local disk ");
  37   //  Break;
  38   //  }
  39   //  Case (INT) drivetype. CDROM:  //  Cd rom drives
  40   //  {
 41   //  MessageBox. Show ("cd rom drives ");
  42   //  Break;
  43   //  }
  44   //  Case (INT) drivetype. Network:  //  Network Driver
  45   // {
  46   //  MessageBox. Show ("network drive ");
  47   //  Break;
  48   //  }
  49   //  Case (INT) drivetype. Ram:
  50   //  {
 51   //  MessageBox. Show ("the drive is a RAM disk ");
  52   //  Break;
  53   //  }
  54   //  Case (INT) drivetype. norootdirectory:
  55   //  {
  56  //  MessageBox. Show ("the drive has no root directory ");
  57   //  Break;
  58   //  }  
  59                       Default : //  Defalut to folder  
  60 {
61                               //  MessageBox. Show ("unknown drive type ");  
  62                               Break ;
 63 }
 64 }
 65  
 66 }
 67               Return Deviceids;
 68 }
 69 }