C # Read the serial number of the USB flash drive

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Private List < String > _ Serialnumber =   New List < String > ();

///   <Summary>
/// Call this function to store the serial numbers of all USB flash drives on the machine to _ serialnumber.
///   </Summary>
Private   Void Matchdriveletterwithserial ()
{
String [] Diskarray;
String Drivenumber;
VaR searcher =   New Managementobjectsearcher ( " Select * From win32_logicaldisktopartition " );
Foreach (Managementobject DM In Searcher. Get ())
{
Getvalueinquotes (DM [ " Dependent " ]. Tostring ());
Diskarray = Getvalueinquotes (DM [ " Antecedent " ]. Tostring (). Split ( ' , ' );
Drivenumber = Diskarray [ 0 ]. Remove ( 0 , 6 ). Trim ();
VaR Disks =   New Managementobjectsearcher ( " Select * From win32_diskdrive " );
Foreach (Managementobject Disk In Disks. Get ())
{
If (Disk [ " Name " ]. Tostring () = ( " \\\\. \ Physicaldrive "   + Drivenumber) & Disk [ " Interfacetype " ]. Tostring () =   " USB " )
{
_ Serialnumber. Add (parseserialfromdeviceid (Disk [ " Pnpdeviceid " ]. Tostring ()));
}
}
}
}
Private   Static   String Parseserialfromdeviceid ( String DeviceID)
{
VaR splitdeviceid = DeviceID. Split ( ' \\ ' );
VaR arraylen = Splitdeviceid. Length -   1 ;
VaR serialarray = Splitdeviceid [arraylen]. Split ( ' & ' );
VaR serial = Serialarray [ 0 ];
Return Serial;
}

Private   Static   String Getvalueinquotes ( String Invalue)
{
VaR posfoundstart = Invalue. indexof ( " \ "" );
VaR posfoundend = Invalue. indexof ( " \ "" , Posfoundstart + 1 );
VaR parsedvalue = Invalue. substring (posfoundstart +   1 , (Posfoundend - Posfoundstart) -   1 );
Return Parsedvalue;
}