Get Device Driver Start Codes?
Mar 16, 2012Is there an API which will tell you the start code for a device/device driver?
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Windows Cannot Load The Device Driver For This Hardware Because There Is A Duplicate Device Already Running In The System (Code 42)
Nov 13, 2009A Problem in accessing a device from VB Windows cannot load the device driver for this hardware because there is a duplicate device already running in the system. (Code 42) This error is because i am using 2 devices of the same company which has the mass usb storage on it and when i install one of the device the other hides. So one is detected the Other is not. It also give a error called designed dragnonacally something...
View 2 RepliesGet Device Driver INF File API?
Mar 11, 2012I seem to recall that there is an API which will return the INF file associated with a device driver but I'm drawing a blank. I want to get the path to the INF File, File Name Section Name and File Date.
View 17 RepliesDriver To Interface With VB That Will Allow To Connect To More Than One Modbus/TCP Device?
Mar 8, 2012I am developing a software that will monitor/poll serveral Modbus/TCP devices on a network.
I have managed to connect to one device using VB.Does anyone know of a driver or perhaps a 3rd party software I could use that will enable me to connect to more than one Modbus/TCP device?
.net - Handling Exceptions In A Class Library Enveloping A Device Driver
Sep 28, 2011I am writing a class library that envelopes an USB device driver. This device has its own class library, provided by the hardware vendor.
Very often, especially if you handle with old DLL or COM assemblies, there are methods (functions to be correct) that return TRUE if all was OK, or FALSE if any error happen. Often these methods return information about the error in one of their parameters or separately in a GetLastError method or even if in an OnError event.
Now, normally I handle all native .NET exceptions in my class libray handling locally or re-throwing to the client if the error is useful to know. But what to do with all other errors that are hidden in the vendor's methods? (in the true I have no exceptions, but only returned TRUE or FALSE values).
Let's make an example with the method "CONNECT" that connect the client to the USB device.
I envelope the method in this way:
Public Sub Connect()
oVendorDevice.connect()
End Sub
now if any connection error happen, the vendor's connect method return FALSE. But I do not know why the connection failed. To know why the connection failed I have to call (for example) the method GetLastError that gives me information about the error. (but do not forget that other vendors use other strategies like returning the error in a method's parameter or in a OnError events.
Now, in order to follow a good .NET exception handling strategy I could write something like this:
Public Sub Connect()
Dim res As Boolean = oVendorDevice.connect()
If res = False Then
[Code].....
Samples Codes On HTTP GET/POST From A Device Server?
Mar 10, 2009Website dat have samples codes on HTTP GET/POST from a device server?
View 3 RepliesHow To Start Writing Codes
Jan 11, 2011My project is due next week and im stuck with how to write the codes. Can someone please tell me how to start writing the codes?
View 5 RepliesDriver Detection - Tell User That It Is Safe To Close Program Once Driver Is Install
Jun 1, 2011Trying to figure out if there is anyway built into windows 7/Vista/XP and/or Dpinst to verify that a driver is installed? I created a program that uses DPinst to install a driver and now I need to figure out how to tell the user that it is safe to close the program once the driver is install as the driver takes longer on some machines to install. Would anyone know how to get this to work?
View 7 RepliesForms :: Experts Modify UPDATE Codes According To INSERT Codes Style
Dec 25, 2009Dear Experts modify UPDATE codes according to INSERT codes Style.
[Code].....
I need update codes as there are insert codes
Make Program Feel If Any Device / Usb Device Plugged Into Computer Or Unplugged
May 5, 2010how can i make my program feel if any device or usb device plugged into the computer or unplugged.url...
View 3 RepliesC# - Detect If Application Start Using A Manual Handling (Pressing An Icon) Or Start When Windows Start?
Feb 28, 2011I have made my application to start automaticly when windows start (registry ../currentversion/run/appname + path). In this mode the application start minimized and an little icon appear in the notification icon area. With this icon you can maximize the app or exit it.If you exit the app and start it again using the Menu (Start/programs etc) than the application start in minimized mode (and in this case I would like to have it in normal mode) because the setting autostart is still true.Is there a way you can detect when the application start when windows startup using the above registry or when people click on an icon in the programs menu (or desktop)?
View 2 Replies.net - Pdf Printer Driver C#?
May 28, 2011I am looking for a free open source .Net based (prefer C#) pdf driver. where I can download one?
View 1 RepliesBest Solution To Use A DLL / Driver
Feb 25, 2010Im working with a CD722UN Customer Display for our POS application. it comes with a USB2.0 connection and a installation package containing a driver etc. now, for my application. how should i do when i want to access this driver? at the moment i'm using the "CD722UN application"s .dll path but that can wary from clients OS etc. [Code] my first thought was to first check if there was a device installed in the device manager and somehow use the driver from there? [Code] what is the best solution?
View 1 RepliesCreate A Driver In NET?
Jul 15, 2009I'm pretty sure the answer is no but I am curious, is it possible to write a driver in .NET code? I am talking more software driver here rather than hardware driver (ie something like a file system filter as opposed to a driver for a printer or something).
View 3 RepliesMongodb Have A .NET Driver?
Jun 23, 2012Is there a tutorial on how to use VB.NET with mongodb?
It uses C#. However, I am used to VB.NET. Can the C# driver interact with VB.NET?
Writing USB Driver With .net?
Mar 30, 2009I'm starting to get into the microcontrollers and I was wondering if anyone had any experience using visual studio and/or visual basic writing drivers and application software for USB Devices and using different microcontrollers from Atmel and Microchip?
If you know of any good websites or anything out there that would get help get me started that would be great.
Any Way To Kill Driver (SYS File)?
Jun 25, 2009Is there any way we can kill a driver (.sys file)?
View 10 RepliesC# - ODBC Driver List From .NET?
Jun 23, 2011Is there a way to get a list of ODBC drivers that are installed on a Windows XP machine from .NET?
I basically would like to see (in .NET) what is in:
Control Panel->Administrative
Tools->Data Sources (ODBC)->"Drivers"
Tab.
Driver - Connects To An Oracle DB
Oct 26, 2010I have build an application in VB.NET (3.5) wich connects to an oracle DB. I works perfectly on my pc. However. When I install the app on a pc without oracle it will not connect to the DB on the server. Do I have to install somekind of driver on the client pc?
View 4 RepliesHow To Install A ODBC Driver Using .ne
Mar 14, 2009how to install a ODBC driver using vb.net windows application ?
View 3 RepliesHow To Reference ActiveX Driver
Jan 9, 2009I am working on a project that needs to using an activeX driver (libaray), a .ocx file. The driver have some properties and methods. I added the reference and have a new instance. When I try to put values to the properties, I got error messages from the driver.
Imports CBMCOMMLib
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[URL]
MaxTraces is one of the properties. Am I using the library correctly?
Print Document Using A PDF Driver?
Mar 3, 2010I have a requirement to convert a word file to PDF and to display it to users.It needs to be in PDF to prevent users making changes to the document.Only a few of the PCs which use the software have Word 2007 installed, most have Word 2003 but all have a third-party printer driver CutePDF installed.I would like to automatically convert the file to PDF using CutePDF without the user having to open a print dialog. In fact I don't want the user to have to do anything at all except request to view the document which will set the automatic process in motion.
View 2 RepliesRemoving HID Driver With Devcon?
Jul 27, 2011Iīm using Windows 7, 64 Bit and Visual Basic form VS 2010 to develop an application.
I want to remove a HID driver with the Devcon.exe tool. Using the console (cmd.exe) with the following command, there is no problem. The driver ist removed immediatly.
D:devcon remove =keyboard "HIDVID_1784*"
If I try the same from the application with:
Shell("C:WindowsSystem32cmd.exe /k D:devcon remove =keyboard ""HIDVID_1784*""", AppWinStyle.NormalFocus, True, 1000)
or:
process.StartInfo = New ProcessStartInfo("C:WindowsSystem32cmd.exe", " /k D:devcon remove =keyboard ""HIDVID_1784*""")
process.Start()
then devcon returns the message:
"The 1 device(s) are ready to be removed. To remove the devices, reboot the system."
and the device is not removed or disabled, and of course, I donīt want to reboot the system.
Does anyone have the same problem or even better can tell me, how to solve this problem, so that the driver ist immediatly removed?
Scanning From Twain Driver?
Jan 28, 2011So - we are FED UP with our medical records packaging (document imaging) system and want to create a simple filing interface for our scanners to use in VB. Part of this deal is getting VB to interact with a TWAIN Driver.
There is some code out there for ASP.NET and C# - does anyone know of a VB.Net based code I could look at?
I have spent part of my day trying to recreate the ASP into VB but the calls are just different enough to get interesting.
System Tray And Driver?
Feb 15, 2011I'm working on a security type program that has a system tray that starts with windows and a driver to prevent it from being closed. Any ideas where to start?
View 3 Replies.net - Why Cancelling 6 WebRequest Using Task.Start Takes Longer That Thread.Start
Jul 24, 2011I have custom asynchronous WebRequest class that I am testing to find out how fast the request will be cancelled and found some odd results, that starting 6 WebRequests with TPL and cancelling them right away takes 25 sec, but when I used just regular background threads it took only 5 sec.
Update: Running them without cancelling takes with Task.Start 9 sec and Thread.Start 3 sec accordingly.
Imports System.Net
Imports System.Threading
[Code]....
Receiving Error From The ODBC SQL Driver
Apr 26, 2012I'm receiving this error from the ODBC SQL Driver as mentioned :- ERROR [07002] [Microsoft][ODBC SQL Server Driver]COUNT field incorrect or syntax error.
Here's my VB
CODE:
And this is the stored procedure i'm calling :-
CODE:
Add Non Listed Printer Driver Via Program?
Aug 4, 2009After some digging around both here and the www in general I have plucked the following code to allow me to install a non listed printer driver to my XP machine. Problem is I am unable to get it to function properly.
The first section of the code creates the port every single time with out fail on any machine that I have tried but doesn't seem to function with the addition of the drivers.
I am trying to install HP driver that have been downloaded for HP site (extracted into C:emp1hp3035 ). I am also trying the same with a HP 4730 printer but neither work. I know i'm over looking something but what??
from most of the sites I need both the .ink and the .dll references but the HP .exe when extracted give a scatter of .cab files. I have tried to extract the EN one and use the dll from there still no joy (this it the .dll reference below.)[code]...
C# - Transmit With A Virtual Webcam Driver In .NET?
Feb 14, 2012It's been a while since i've posted. Happy Valentine's day! Requirement: I would like to interface my .NET application to a "virtual webcam driver" for the purposes of SENDING image frames. I'm happy to use an open source .NET or COM component if that exists or indeed implement a "webcam driver" from scratch if someone can point me in the right direction. My first priority is the functionality.
My second priority is low dependancy on 3rd party libraries and tech (aside from .NET of course I'd prefer not to involve directshow if possible?
Cannot Set Capabilities Of Scanner Through Twain Driver
Sep 9, 2011I have been working with TWAIN driver for few days. I have learnt how to connect to the scanner or get the working scanners connected to the machine. I am having a problem now, eventhough i get connected to the scanner, I am not able to set the capabilities from my application. The scanner scans using the capabilities that are set on it but not from my application. I have looked at the sample code given with twain pro but even that doesnt set the capabilities of the scanner. For example if the scanner is set to 300 dpi and I set 200dpi from my application, the scanner scans with 300 dpi. It gives me an error saying that the value given is out of range.
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