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.
View 7 RepliesI 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]....
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...
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.
How to have the computer to tell the usb connected device what to do.
View 1 RepliesI 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?
View 3 RepliesI am Using Visual Basic 2010. I want to check My Connection Status. Connected or not in Remote Server Connection (SQL Server 2008 R2). How To Check Connection Status..?
View 1 RepliesI 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.
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]....
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]....
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.
View 1 RepliesI'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?
Should I be able to test the status (availability) of a device (usbvideo) from within a program in MS Visual Basic 2010 Express? How?
View 2 RepliesI 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?
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")
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]...
Here is my insert statement:
[Code]...
Now for a succesful insertion i want to notify the user about a successful save operation.....i.e,i want to display a message "Successful Save Operation"to the user. How to do this using the Status Strip?
how can i make my program feel if any device or usb device plugged into the computer or unplugged.url...
View 3 RepliesA 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 RepliesI've got the code to display the current browser status text in the status bar but i want it to display the name of my web browser aswell. Example: Dreamincode.net - (Name of Webbrowser)
He is my code for the displaying staus text.
Private Sub webBrowser1_StatusTextChanged( _
ByVal sender As Object, ByVal e As EventArgs) _
Handles webBrowser1.StatusTextChanged
[Code]...
I have a gridview in which when I click edit, update, and cancel button comes. I have a variable named status. If status=false then update should change to insert and if status=true then update should be update itself.
<asp:TemplateField >
<ItemTemplate>
<asp:LinkButton ID="lnkEdit" runat="server" CommandName="Edit" Text="Edit">
</asp:LinkButton>
[code].....
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]
View 1 Replieshow 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?
View 4 RepliesIs 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.
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.
View 8 Repliesi 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?
View 2 RepliesI'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?
View 2 RepliesI want to be able to change my network on the press of a button to another favorite network followed by the launch of a LAN based game and closing a set of pre-defined internet applications that will interrupt gameplay with "Lost connection" popups Basically I have two networks, on Internet, one only LAN (Both Wireless)I want to be able to switch networks and launch my game. I know the code for launching my game, but my question is....How do I switch network connections using my program?
View 1 RepliesI have no idea at all of how to get a simple True/False function to tell me if the user has any sort of internet connection
View 14 RepliesI want to send some data through a serialport (USB) permanently and got a problem once the USB interface crashes. Sometimes it just happens, but if I ask the PC "serialport2.isopen ()" I will get a TRUE, even though the USB cable was uplugged. How can I check if a connection is still available. CDHolding wasnt working either. I am using VB 2008 Express
View 7 Replies