C# Discussion Boards - CodeProject

Re: Using .NET's WMI to Identify Pen-Drive's Unique ID

29-Aug-06 8:25

Hi!
I think Win32_DiskDrive.PNPDeviceID is unique. I tried it with two idential usb sticks and they gave different PNPDeviceID's.

Regards,
mav

--
Black holes are the places where god divided by 0...

Marcos Accioly29-Aug-06 9:09

Marcos Accioly

29-Aug-06 9:09

mav.northwind wrote:
Hi!
I think Win32_DiskDrive.PNPDeviceID is unique. I tried it with two idential usb sticks and they gave different PNPDeviceID's.

Hi Mav... Tried that but unfortunately I think I couldn't use that, as windows gives your pen-drive a different PNPDeviceID each time you plug it in. =) I needed something that could tell "Oh, this is Jimmy's pen-drive" for instance. I am developing an app in which, along with user and password, the client system has to provide an unique ID for the pen-drive being used with the app. Any other ideas?

Regards...

Vini

Re: Using .NET's WMI to Identify Pen-Drive's Unique ID

Dave Kreskowiak29-Aug-06 9:17

Dave Kreskowiak

29-Aug-06 9:17

You might be able to gleen something useful from this[^].

Dave Kreskowiak
Microsoft MVP - Visual Basic

Re: Using .NET's WMI to Identify Pen-Drive's Unique ID

mav.northwind29-Aug-06 10:24

Re: Using .NET's WMI to Identify Pen-Drive's Unique ID

29-Aug-06 10:24

ReHi!

At least with the 4 sticks (3 different brands) I tried it with, they all kept their PNPDeviceID, even when I plugged them into another computer.

But your mileage may vary...

Regards,
mav

--
Black holes are the places where god divided by 0...

Marcos Accioly29-Aug-06 10:29

Marcos Accioly

29-Aug-06 10:29

mav.northwind wrote:
At least with the 4 sticks (3 different brands) I tried it with, they all kept their PNPDeviceID, even when I plugged them into another computer.
But your mileage may vary...

You're quite right, mav... Looking through msinfo32.exe I could check that it remains the same, actually. I also tested on another workstation.

Thanks a lot for your help.

And btw: the link that Dave (if Im not wrong) posted is very nice. If you wanna take a peek:

http://msdn.microsoft.com/coding4fun/someassemblyrequired/isthatyou/default.aspx

Cheers,

Re: Using .NET's WMI to Identify Pen-Drive's Unique ID

mav.northwind29-Aug-06 10:35

Re: Using .NET's WMI to Identify Pen-Drive's Unique ID

29-Aug-06 10:35

Marcos Accioly wrote:
And btw: the link that Dave (if Im not wrong) posted is very nice. If you wanna take a peek:

http://msdn.microsoft.com/coding4fun/someassemblyrequired/isthatyou/default.aspx

Yup, I already browsed through it. Very nice, indeed. Smile | :)

Regards,
mav

--
Black holes are the places where god divided by 0...

Marcos Accioly30-Aug-06 3:48

Marcos Accioly

30-Aug-06 3:48

Hi again mav,

I actually tried the PNPDeviceID for my LG UP3D USB Device and it simply informed nothing. *But* going to msinfo32.exe gives me the following output:

LG UP3D USB Device USBSTOR\DISK&VEN_LG_UP3D&PROD_&REV_\200508010001&0
USB Mass Storage Device USB\VID_043E&PID_7090\200508010001

which tells me that windows actually has a PNPDeviceId for it, that being VID_043E&PID_7090 (according to the article at Coding4Fun about the wireless usb PC Lock).

Now the question is: Why?

you can check out a printscreen I've done of the simple app for identifying the hardware HERE

Cheers,

Vini

Re: Using .NET's WMI to Identify Pen-Drive's Unique ID

mav.northwind1-Sep-06 4:11

How to pass parameters to MATLAB function (.dll file)

1-Sep-06 4:11

The wonders of windows...

I'm afraid I don't have the faintest idea why Frown | :(

Regards,
mav

--
Black holes are the places where god divided by 0...

Jr.Allam29-Aug-06 2:59

Jr.Allam

29-Aug-06 2:59

hi there,

I have the following MATLAB function:

function y=drwmesh(FNo,V1,V2,T)
figure(FNo)
x=[-10:2.5:60]; y=[-20:2.5:35];
[sx sy]=MESHGRID(-10:60,-20:35);
h=STREAMLINE(V1',V2',sx,sy);
set(h,'color','red'); view(2);
xlabel('Longitude'); ylabel('Latitude');
title(T);
y=0;

I have converted it to (.dll) file by using MATLAB Builder for COM.
My problem is that I don't know how to pass the parameters: FNo(Figure No.) which is integer and the two matrices V1,V2 and the string T.

Woudl u plz write me the C# code? plz help me!! Frown | :(

Note: I'm using "Extreme Optimization Mathematics Library for .NET" to creat and perform matrix operatins.

Thanks in advance,

Jr.Allam

how to save response

Yustme29-Aug-06 2:57

Yustme

29-Aug-06 2:57

Hi,

If i send a comman to a device which is attached to my serial port.
How can i save the response i get?

Thanks in advance!

Re: how to save response

led mike29-Aug-06 4:39

led mike

29-Aug-06 4:39

Yustme wrote:
How can i save the response i get?

Create a file and write the data to the file Roll eyes | :rolleyes:

led mike

Re: how to save response

engsrini29-Aug-06 4:41

engsrini

29-Aug-06 4:41

You have to register an event in the serialport class like this

SPort.DataReceived += new SerialDataReceivedEventHandler(SPort_DataReceived);

In the eventhandler you can read the data in the buffer by char or by the whole string using the following methods
ReadChar()
ReadExisting();

Set System Default Sound device

Rahul.RK29-Aug-06 2:30

Rahul.RK

29-Aug-06 2:30

Hello,

Just i want to ask you that can we set system's default sound device through

programmitically.

I just explore my questions as, I have two sound cards connected to my pc.

One is my inbuilt and i have connected anothor USB sound card to PC.

Now, the inbuild sound card in my default sound card and i want to make second one

i.e. i want to make USB sound card as default when my application starts and when application is

shutting down i want to make it as default.

Thanks in advance.

Rahul Kulkarni.

Re: Set System Default Sound device

Nader Elshehabi29-Aug-06 5:42

29-Aug-06 5:42

Hello

you should be looking Here[^]

Regards

Move e-mail to folder.

mbnbonin29-Aug-06 2:21

mbnbonin

29-Aug-06 2:21

How to move e-mail item from inbox folder to another folder (backup) Using Microsoft Outlook 2002, in C# ?

Thanks!

Manoel Bonin

Mesh edges not smooth

mirano29-Aug-06 1:48

mirano

29-Aug-06 1:48

Hi everybody.
I use Visual C# w managed DirectX to load the mesh. It looks fine, but the
edges are raugh. When I adjust the light, it looks somewhat better, but it is
still not good. I tried changing the camera near and far plain, making the
object bigger so more pixels are used to render the object, removed all other
objects from the scene so Z-fighting would not be the issue, but to no avail.
When I load the mesh into 3DS Max it looks perfect, so it is not the object
itself. The edges look as if not being antialiased, but I have no clue how to
go with this.
Any help would be appreciated.

Thanks.

avoiding delegates

lushgrass29-Aug-06 1:40

lushgrass

29-Aug-06 1:40

hi, was hoping to get some help with a problem of mine.
i get an error when i run this saying that Control.Invoke is required.
However i want to avoid using delegates since it eats up a lot of resources.
how do i do this?
is it even possible?

thanks!

Nader Elshehabi29-Aug-06 1:50

29-Aug-06 1:50

Hello

lushgrass wrote:
i get an error when i run this

What is this exactly??! Confused | :confused:

lushgrass wrote:
i want to avoid using delegates since it eats up a lot of resources.

Who on earth said that?!!

lushgrass wrote:
is it even possible?

Depends on what you are trying to do?? Some details and a bit of code will be very helpful.

Regards

BadKarma29-Aug-06 2:32

BadKarma

29-Aug-06 2:32

Nader Elshehabi wrote:
i want to avoid using delegates since it eats up a lot of resources.

Who on earth said that?!!

Well since every callback instantiates a thread, hence consumes a resource, he is correct on this point

codito ergo sum

Nader Elshehabi29-Aug-06 3:46

29-Aug-06 3:46

hello

BadKarma wrote:
every callback instantiates a thread

Pardon me but, I totaly disagree. Delegates don't make threads by themselves unless you call them asynchronously. Here is a small demo:

private delegate void MyDel();
MyDel NewDel;

Form1() //The constructor
{
    NewDel = new MyDel(MyDelMethod);
}

void MyLink_Click(object sender, EventArgs e)
{
    for (int i = 0; i < 5; i++)
        Invoke(NewDel);
}

private void MyDelMethod()
{
    MessageBox.Show("Hello");
}

You will see that the Invoke call is blocked by the Messagebox.Show and the second message isn't shown until you close the previous one. Also because the Invoke was called from the main thread, you will see that the UI is blocked as well.

Regards

BadKarma29-Aug-06 4:12

BadKarma

29-Aug-06 4:12

Hi,

you are right Rose | [Rose]

thanks for reminding me that delegates can also be used in singlethreaded manner

(i've been stuck for a little while with inner thread communication using delegates, which is a resource bloat Sigh | :sigh:

)

codito ergo sum

lushgrass29-Aug-06 16:49

lushgrass

29-Aug-06 16:49

well, basically, is there any way to force the gui to update without delegates?
the only way i can currently think of is by having the gui update itself on a timer.
then have a flag that sets true when there are changes to be made.

Nader Elshehabi30-Aug-06 8:49