Detect If A Device Is Connected?

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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Detect A Usb Device When It Is Connected To PC?

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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Detect When A New Usb-device Is Connected?

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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File I/O And Registry :: Detect A Mobile Device Has Been Connected To Pc

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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Have Computer To Tell Usb Connected Device?

Feb 3, 2012

How to have the computer to tell the usb connected device what to do.

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USB Device Connected Status?

Dec 21, 2011

I need to be able to get the status of a USB device ( Connected/Disconnected ). The device is a tablet. The device IS NOT a storage device, and no other operations will be performed. I am using Visual Studio 2010 and coding in VB. Everything i have found was for storage device or was old code.

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Access A Connected Zune Device?

Aug 10, 2010

I was just wondering if you could view the items on a connected Zune device (such as the Zune HD or any of the others. (4GB, etc.))Also, possibly listen to the songs / watch the videos on it with the Windows Media Player codec in the program, and view the pictures in a PictureBox? Is this possible at all? Can I at least view the items? Or is this strictly forbidden?

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App To View Which COM Port A USB-Serial Device Is Connected To?

Jul 14, 2011

I am currently having an issue finding information on how to develop a simple application that a user can run to find out which COM port ie. COM1, COM2, ect is assined to the Belkin USB to Serial Adapters we use in the company.

To anyones knowledge is this possible and how would I implement it in a Windows Form Application.

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Send Command To Device Connected To COM1?

Feb 3, 2012

I want to send a simple command, such as "v20" followed by a carriage control character, to a heating/cooling block connected to a desktop computer running Windows XP. I am able to get the commands to work within a terminal emulator. I want to compile a simple program that will be executed by software used to control a liquid handling robot.I've looked at the how to send strings to serial ports in visual basic page and modified that code ever so slightly to send the data that I want. However, it does not work and my heating/cooling block is not changing temperatures.

Here's what I have written:

Sub SendSerialData(ByVal data As String)
data = "n65"
' Send strings to a serial port.

[code]....

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C# - Find Through Which Network Device User Is Connected To Internet?

Apr 1, 2011

Using the code below i will get all network interfaces wich are enabled and functional on the machine.

Private netIntrfc As NetworkInterface() = NetworkInterface.GetAllNetworkInterfaces()
For i As Integer = 0 To netIntrfc.Length - 1
If netIntrfc(i).OperationalStatus = OperationalStatus.Up Then

[code]....

But my problem is how to get the default one, the one(ethernet adapter) through wich user is connected to internet?I need to change some settings of default(through wich user is connected to internet) adapter. settings i change through registry so i could sample add same settings for each network interface but that could cause problems and makes no point then?

EDITED:for now i have done like code below, so if this can help someone other...

Dim u As UdpClient = New UdpClient(System.Net.Dns.GetHostName, 1)
Dim localAddr As IPAddress = CType(u.Client.LocalEndPoint, IPEndPoint).Address
Private netIntrfc As NetworkInterface() = NetworkInterface.GetAllNetworkInterfaces()

[code]....

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VS 2008 Program Autorun When Removable Device Is Connected?

May 18, 2010

I'm not sure if this would be this right place to post this, or even if I should go about trying to do it through my program itself or through the computer's settings on the final EXE file, but anyways, here goes.

I have a synchronization program that syncs my flashdrive to my home computer and (hopefully) my flashdrive to my personal folder on the school computers. What I think would be easiest, though, would be if the program was located on the flashdrive, and would simply "autorun" when I plug it in, instead of having 2 separate instances of the sync program running at school and at home.

Would it be easier (or possible) to code for that from within the program, or with the EXE file's settings?

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SerialPort Escape String - Retrieving Data From A Device Connected To A Virtual Com-port

Aug 13, 2010

I am writing a small app that is retrieving data from a device connected to a virtual com-port. I connect without problems to the device using the settings 9600-8-N-1.

I need to send the command <esc>MS , the device then sends back the data to a computer. I have tried this using Hyperterminal with success. I also did this with Excel and VBA. I used the MSComm32 Active X control:

MSComm1.Output = Chr$(27) + "M" + "S" + Chr$(13)

Msgbox(MSComm1.Input)

This made the data from the device pop up in a messagebox. I am writing a winforms app in vb.net, using VS2005. I have a form, on which I have a Placed a SerialPort control, named sp. My sample code is as follows:

Private Sub Form1_Load(ByVal
sender As System.Object,
ByVal e

[CODE]...

This returns the error message "Error: expecting a command". I have done som tests in HyperTerminal, and have concluded with:

-If I dont send <esc>, I get error "Expecting a command"

-If I send wrong command (ie MD instead of MS) i get error "Bad command"

Based on this, I suspect that I don't pass the escape character correctly to my device. So I wonder how to do this?

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Detect When USB Mouse Is Connected/Disconnect?

Oct 16, 2009

I'm writing a little application that needs to detect when a USB Mouse is Connected and Disconnected. I am running into a dead end when trying to determine the best way detect this. I have tried WMI and WmdProc but I think I am hitting a mental block trying to figure out the best option.best way to listen for the connection and disconnection of a USB mouse?

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How To Detect A USB Device

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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WMI Event Watcher - Detect A New USB Device

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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Detect Connected Computers In A LAN Using Visual Basic And Connect It Using A Client Application?

Mar 10, 2009

I would like to ask how to connect our application to connected computers in a LAN.Will I use the winsock control?How can I run queries using a server database?Any answers are welcome.

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Write A Program To Automatically Detect And Identify A Particular Device?

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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[2008] Detect The Insertion Of A USB Mass Storage Device (USB Stick)

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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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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Detect Usb Card Reader Device And When Swipe The Card

Nov 23, 2009

I want to create an application that can detect usb card reader device and when i swipe the card it should read.The below code WORKS PERFECTLY IN VB.But when i converted it to vb.net it is showing some problem.Below is the code for that.

[Code]...

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Changing ToolStripStatusLabel Text To Connected If Connected To A Network

Apr 4, 2011

On my program I am trying to make a ToolStripStatusLabel's text change to "connected" if connected to a network and if not connected to a network change the text to " Not Connected" then I don't know how to display a image if connected to a network or not connected. So if the computer is connected to a network I have a image that I would like to be displayed next to the ToolStripStatusLabel. And if not connected to a network, can the program display a different image? I tried this:

My.Computer.Network.IsAvailable=True(ToolStripStatusLabel2.Text "Connected")
My.Computer.Network.IsAvailable=False(ToolStripStatusLabel2.Text "Not Connected")

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Find Out If The Connection Of Sockets (TCPClient) Is Connected Or Not Connected

Nov 10, 2009

I am trying to find out if the connection of my sockets (TCPClient) is connected or not connected. I am using the following code:

[Code]...

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Make Program Feel If Any Device / Usb Device Plugged Into Computer Or Unplugged

May 5, 2010

how can i make my program feel if any device or usb device plugged into the computer or unplugged.url...

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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, 2009

A 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...

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Can't Get IP From Others Pc's Connected To Router

Feb 16, 2012

i need to create a network map (from any pc). For now i get my own ip, the router ip, but i can't get the IP from others pc's connected to the router. Can i get the IP's only with the framework? or i need another external library? [code]

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Get Connected Network Name?

May 31, 2012

how can i detect in VB.Net 2010 that which network card I'm currently using for internet? Like Local Area network, Wireless Network Connection, Cellular Modem or Bluetooth Modem?

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How To Get Connected Network Name

Apr 23, 2010

Is there any easy way to find out , which network am I connected to via programmatically. I mean we can check the Network is available through "My.Computer.Network.IsAvailable", same way can i find the name the network (Either Direct or via VPN).

I have to do something if my network is connected to a particular network.

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List Name Of All Connected Devices On Lan?

Oct 28, 2010

i am trying to enumerate all IPs on my local network, but i am not having any luck. The only thing i have came up with so far is a really tedius "get my own ip and scan the subnet with pings" which surely isn't the best way? I am really only trying to get the ip of a tivo box, and i can determine it's a tivo by mac address or name. My router lists the "computer name" of the tivos as a long string of numbers with the prefix "tivo".What about broadcasting a ping packet? I could also attempt to connect with telnet to port 31339 on every one of them.

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Add New Partition Connected To Ftp Server2nd

Mar 15, 2009

i need to ask about 2 things1st. how i can create ftp drive i mean to add new partition connected to ftp server2nd. why it's to hard to find codes for vb.net any document with all codes and commands list?

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Can't Disconnect From CR-connected Database

May 30, 2006

I'm viewing reports on a VB.net form using CrystalReportViewer. Once a report is opened, the Access database that is used within the report is locked (i.e., the Access MDB file can't be deleted). Even after the report is closed, the database stays locked until the VB.net app "ends". This is a problem because I want to be able to delete the MDB file at some point while running the app and can't. The VB.net app starts by opening a form named "Startup". No database connection occurs here. A button is pressed using this [code]I must not be properly closing the CrystalReportViewer or the Report form.How do I close the Crystal report and unlock/release the Access database?

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