Thanks for this Chris.
I went back to the code with your suggestion, but found that commenting the
line you mention made no difference. However, I commented out line 111
instead ('if((lVolume.Flags & (int)VolumeFlags.Media)!=0)') and this did
work, but only for a removable device (an SD card) plugged directly into the
SD slot on my laptop. Devices plugged into an attached USB multi-card reader
were not picked up.
I have achieved what I need to do using the following article buried in the
MSDN help for VS2003 - article called 'Drives and Directories and Files! Oh
my!' (MSDN URL
'ms-help://MS.VSCC.2003/MS.MSDNQTR.2005OCT.1033/dnadvnet/html/vbnet07232002.htm')
which demos use of the Windows Scripting Host COM object to obtain device
and directory info from all connected devices - I have written some code
based on the article to poll the connected drives periodically on a
dedicated thread and raise events when drives are inserted or removed, and
it works exactly as I need it to - including using the USB card reader.
Chris
"balmerch" <(E-Mail Removed)> wrote in message
news:29915D94-EC2F-430F-BA48-(E-Mail Removed)...
> Try what one of the comments on that site suggests for that article:
>
> "The reason why Riul's solution doesn't work for anything except CD/DVD
> drives is the line
> if(lBroadcastHeader.Type==DeviceType.Volume)
> in _DeviceVolumeMonitor.WndProc(), file DeviceVolumeMonitor.cs line 108.
>
> Remove/comment the if and always trigger the events to also get
> notifications for USB or Network devices."
>
> Chris
>
> "Chris Lewis" wrote:
>
>> Thanks for the link. I have tried running this on my XP SP2 machine, and
>> nothing seemed to happen (i.e. no events were fired at all) when I
>> attached
>> a CompactFlash card via a multi-card USB reader? Any ideas?
>>
>> Thanks,
>>
>> Chris
>>
>> "S.M. Altaf [MVP]" <(E-Mail Removed)> wrote in message
>> news:(E-Mail Removed)...
>> > Hi, Go through this:
>> >
>> > http://www.codeproject.com/dotnet/de...umemonitor.asp
>> >
>> > HTH
>> > --------------------------------------------------------------------------------
>> > All that glitters has a high refractive index.
>> > www.mendhak.com
>> >
>> >
>> > "Chris Lewis" <(E-Mail Removed)> wrote in message
>> > news:(E-Mail Removed)...
>> >> Hi,
>> >>
>> >> I want my app to respond to attachment of a memory card (SD) and/or a
>> >> particular type of USB device to a client PC. Both devices have on
>> >> them
>> >> the same file/directory structure - i.e. a directory structure
>> >> recognisable to my application.
>> >>
>> >> What I would like to do is have my .NET Windows Form app start
>> >> automatically (if it is not already running) when either device is
>> >> attached to the machine, and have the files pre-selected in an
>> >> explorer-like window for the user to take further action with. Adobe
>> >> Elements does this, for example, when I attach my Compact Flash card
>> >> to
>> >> my PC - it seems to use a Windows Service called 'Adobe Active File
>> >> Monitor' that runs constantly in the background.
>> >>
>> >> Any ideas how to do this, or better still any code out there that
>> >> already
>> >> does this? I don't think the .NET FileSystemWatcher will work for
>> >> removable devices, so I suspect that a bespoke polling component is
>> >> needed. If so, how is it best to detect the presence or otherwise of
>> >> removable drives?
>> >>
>> >> Thanks,
>> >>
>> >> Chris
>> >>
>> >>
>> >
>> >
>>
>>
>>
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