not getting hard drive serial number

Question

i have tried using the code 

searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia");

int i = 0;

foreach (ManagementObject wmi_HD in searcher.Get())

{

// get the hard drive from collection

// using index

HardDrive hd = (HardDrive)hdCollection[i];

// get the hardware serial no.

if (wmi_HD["SerialNumber"] == null)

hd.SerialNo = "None";

else

hd.SerialNo = wmi_HD["SerialNumber"].ToString();

++i;

}

 

 but this is not working for windows 8 and higher versions..

Answer 1

Interesting...

 

I never got a chance to work on such a project. I need to try it out.

 

Sharing some links, hopes it helps you...

 

http://stackoverflow.com/questions/3502311/how-to-play-a-sound-in-c-net

http://stackoverflow.com/questions/21331412/best-way-to-use-the-system-media-soundplayer-class

 

Here suggesting not to use SoundPlayer due to memory issue...

http://stackoverflow.com/questions/4107886/soundplayer-causing-memory-leaks 

http://www.codeproject.com/Articles/13909/SoundPlayer-bug-Calling-unmanaged-APIs 

 

Answer 2

Hi, thanks a lot,

 

some of those links were  realy heplful! Even though I am still not sure why such a problem might even arise, I guess loading from a file seems to solve it, which is enough for the moment ;)

 

One last question, since this "problem" got me a little hyper nervous regarding memory leaks...

If I have 2 picture resources Pic1 and Pic2 and an ImageButton-Object, which is just some object inherited from UserControl and with a changed OnPaint:

01	protected override void OnPaint(PaintEventArgs e)

02

{

03	base.OnPaint(e);

04

//stuff

05	if (this.keyStatus))

06	{ this.imageButton.DefaultImage = Resource1.Pic1; }

07

else

08	{ this.imageButton.DefaultImage = Resource1.Pic2; }

09	e.Graphics.DrawImage(this.defaultImage, this.ClientRectangle);

10

}

Beside OnPaint not being a good place for assigning DefaultImage (its just here to show you what I mean in a short piece of code), I am just assinging a reference to my precompiled resource here, am I? I am not creating a copy as I would if I would call it with "new Bitmap(Resource1.Pic1)".
So if I change keyStatus every 5 seconds, I would have a very annoying picture on my screen with a lot of chaning, but no problems that the picture changing leaks memory. Correct?


Again, thanks a lot!

Cheers Stefan