Detect The Insertion Of USB Memory Sticks And Prompt The User To Accept The Device Or Reject It?
Sep 14, 2009
I'm writing a small application to detect the insertion of USB memory sticks and prompt the user to accept the device or reject it. Rejecting it would prevent its being loaded by Windows. I have the code that detects insertion & removal working fine but have no idea how to cancel the insertion.I was thinking that I could intercept the DEVICEARRIVAL message and kill it off before its actioned by Windows but I am lost with this.code to show the way.Heres the main part of the code I have so far-
Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
'This kills off any 'autoplay' capability in the stick
If QueryCancelAutoPlay = 0 Then[code]......
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Dec 1, 2008
I'm looking for a way to detect when a new USB mass storage device is inserted in one of the pc's USB ports... I need to get it's drive letter and check for the existence of a particular file.
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Oct 10, 2010
i have a script with a login form that creates a folder per user with username.txt, password.txt, firstname.txt, and lastname.txt. - auto creates when creating new user.after i log in and change form i want an label showing the first and last name of the person logged in,how am i supposed to do that? is there any way to make like an "admin" form where new account applies will pop-up when "admin" log in and then either accept or reject new users?
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May 28, 2009
I know you can do it with an WMI event or overriding WndProc and looking for the right messages, but i was wondering if there wasn't something hidden in the net framework that makes this task easyer.
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Jan 8, 2012
Why is it that this VB.NET code only works for detecting flash disks?
Select Case m.WParam
Case WM_DEVICECHANGE_WPPARAMS.DBT_DEVICEARRIVAL
MsgBox("USB Inserted")[code].....
What would be the possible way to detect the insertion and removal of other USB peripherals, such as mouse and keyboard?
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Aug 27, 2010
I know you can do it with an WMI event or overriding WndProc and looking for the right messages, but i was wondering if there wasn't something hidden in the net framework that makes this task easyer.
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Sep 23, 2009
I tried to make a media player by following this guide: [URL]
The problem is that I want to execute the mediaplayer from a batch script and auto-play a .avi like so: C:MediaPlayer.exe filename.avi
But this will only start an emty mediaplayer.
How do I make the MediaPlayer accept the .avi filename?
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Jul 11, 2010
I need a code to notify my application when a device (flash drive, cd, etc.) is inserted and removed.
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Jan 9, 2012
Why is it that this VB.Net code only works for detecting flash disks? [code] What would be the possible way to detect the insertion and removal of other USB Peripherals such as mouse and keyboard?
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Oct 26, 2009
I'm currently making a text editor, and I wanted to make my application accept arguments from the command prompt, you know <Directory>myapp.exe <textfile>. How can I do this?
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Oct 23, 2009
I need to detect a usb device when it is connected to PC.I found next code that is working. But it works only with Mass Storage.Imports System.Management
Public Class Form1
Private WithEvents m_MediaConnectWatcher As ManagementEventWatcher
Public USBDriveName As String
[code].....
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Feb 2, 2010
I need to detect a usb device when it is connected to PC.I found next code that is working. But it works only with Mass Storage.
Imports System.Management
Public Class Form1
Private WithEvents m_MediaConnectWatcher As ManagementEventWatcher
Public USBDriveName As String
[code]....
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Sep 6, 2009
I am trying to figure out how to detect if a device is connected. The exact c# sample can be found here: [URL]
But when I tried to convert it to C# .... I wasted hours!
I googled a lot and changed the declaration of the API many times...
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Mar 27, 2009
I want to detect when a new usb-device (can be anything) is connected to the computer. I don't need to know what kind of device it is, I just want to know when it is plugged in.
I found this thread: [URL]
I know the solution is in here, but I'm overlooking it I'm afraid. What I want:
USB-device connected > Run function. USB-device disconnected > Run another function.
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Mar 7, 2010
I'm trying to detect the insertion of a USB-Serial COM port device. I found an example that shows how to detect a new USB device - and that part is now working well in my project. The question is, how do I pass on that event back to my Form1 class? In the example, I can create a MsgBox just fine, but if I try to manipulate any of the controls on my form, or raise a user-defined event, I get this message: 'System.InvalidOperationException' occurred in System.Windows.Forms.dll
[Code]...
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Jul 20, 2009
I posted the message below in the VB6 section of this forum with no success, but as I've now got access to VB2008 via work, I thought I'd try again here. Basically I'd like to be able in code navigate to a folder held on a mobile device like a mobile phone connected to a pc using MS Activesync? It shows up in the drive list within "My Computer" as a system folder, I've vb6 code to detect all the drives including network mapped drives but not the mobile device.Ultimately I'd like to do file copying when my program detects a mobile device has been connected.
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Sep 24, 2009
I am trying to write a VB program to automatically detect and identify a particular device that will only communicate to my program when I have 2 or more devices plug into the USB port. One way of doing it that I can think of is to scan through the available port and do a write and read to identified the port. But that would take up a lot of time if I were to scan through say 5 available port.
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Jun 13, 2010
How can I do it so every time the user loads my application it will automatically (without prompt, or user selecting) upload all the files in a folder i select beforehand and add them into ListBox1
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Aug 31, 2009
How can i detect how much memory each tab is using
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Jan 25, 2012
I'm trying to use WMI to get RAM Infomation but I can't seem to make it display the diffrence between the sticks, IE just getting a serial number for one stick but not the other, I am calling it like this: Label19.Text = (queryObj("SerialNumber")). How can I specify each stick?
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Feb 7, 2012
I'm making "Sticky Notes" and I want to be able to pin those stickies to the desktop. Sorta like a BottomMost function. Is there something like that I can use and if not, how would I even go about making a function that would keep my form on the desktop?
'Pins the program to the desktop
If saved = False Then
saved = True : PinToDesktopToolStripMenuItem.Checked = True : lblClose.Visible = False : Me.ShowInTaskbar = False
Else
saved = False : PinToDesktopToolStripMenuItem.Checked = False : lblClose.Visible = True : Me.ShowInTaskbar = True
End If
The reason I'm not going to mark it resolved is because if I click pin to desktop and the desktop isn't the application directly under my application then I have to minimize every program to get it to stay on the desktop.
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Sep 7, 2009
I want to know how to accept data from user? I want to accept about 10 datas from user. Before this I use Input box, but it is not a best way for user to key in 10 times data that required. What should I do and what the appropriate way to accept 10 data from user in 1 screen?
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Oct 3, 2011
I need to prompt the user to input a few key/value items.Instead of building a form with a bunch of label + textbox, I figured I could use a simple, unbound grid.
I know the ListView widget can be displayed as a grid, but it appears that some added code is needed to make it behave that way.If you've investigated the matter recently, which solution did you end up using?
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Mar 21, 2011
I am fairly new to visual basic and have written this program to detect a change in a selected pixel on the screen. When the pixel changes, a sound plays every x seconds. It works fine but after a few hours of operation a possible memory leak causes it to either crash the program or the PC. I have watched the process and I can see 4k added to it every 4 seconds or so. Where this memory leak is coming from?
Here is the code:
Public Class Main
Public pointx As Long
Public pointy As Long
Public areaselected As Integer
Public TimeToPause, SecondTimer, changefound As Integer
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Feb 11, 2012
I'd like for my application to prompt for user credentials as soon as it starts. The reason for this being that it is an app for our IT Helpdesk that will be run on user's machines, and I need to make sure it is always run with administrator credentials.
Is there a simple way to get the program to prompt for credentials on execution?
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May 12, 2009
I wanted to know how my users can write something in a textbox, then allow them to save it as a .txt file.
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Mar 1, 2011
Am to prompt user for # of quiz scores to input, should then create an array large enough to hold those number of scores, set up loop that allows user to enter approp. # of scores, all scores will be integers, each score should be placed in the array.
[Code]...
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Sep 16, 2011
I'm trying to use the ExceptionMessageBox to prompt a user that a field is required. I'm getting a syntax error saying "Type 'ExceptionMessageBox' is not defined". I added the ExceptionMessageBox as a reference, but still has that same error. I'm using Visual Web Developer 2008 Express.
Here's the code:
The bolded part is where I'm getting an error.
Try
If rptAcctNo = 0 Then
Throw New ApplicationException("Error occurred")
[Code].....
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Aug 22, 2010
I'm trying to figure out how to prompt a user to enter a captcha. Some programs out there have a little popup with the captcha image and a textbox, the user then enters the characters from the image and the captcha is solved by the user of the application. When I try to request the image directly, it gives me a different image than the one currently in the webbrowser control. Any ideas how I can create the pop up of this captcha image for the user to enter?
Note : . I'm looking for a way to prompt the user to enter a captcha from website.
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Sep 19, 2011
Using a DataGridViewComboBoxColumn, the goal is to make the ComboBoxes accept user's new items and also the possibility of choosing items that are already present.I'm aware of using EditingControlShowing event of the DataGridView to change the DropDownStyle of the DataGridViewComboBoxEditingControl at run time to allow this, but I'm wondering if this can be done at a lower level.
What I'm doing now is extending DataGridViewComboBoxColumn, DataGridViewComboBoxCell and DataGridViewComboBoxEditingControl, hoping to change the EditingControl's DropDownStyle in the moment I instantiate it. So far, no luck.The debugger shows the right assignment is being executed, but nonetheless, the DropDownStyle is popping at the EditingControlShowing (using the event for debugging purposes) as DropBoxList, not DropBox, which is the intent.
Here follow the classes:
Public Class DataGridViewComboBoxColumnALT
Inherits System.Windows.Forms.DataGridViewComboBoxColumn
Public Sub New()
[code]....
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