I would like to detect the insertion, and completion of installation of a USB cable in VB2008 as two separate events. The driver gets installed prior to insertion of the cable.
View 5 RepliesI'm trying to create a Windows Explorer like application, when a flash drive is connected/disconnected the application detects it and does some stuff. This is what I've accomplished so far:
Code:
Private Const WM_DEVICECHANGE As Integer = &H219
Private Const DBT_DEVICEARRIVAL As Integer = &H8000
Private Const DBT_DEVICEREMOVECOMPLETE As Integer = &H8004
[Code]....
One thing that this code does not do is detect when the driver changes from ready to not ready, e.g. if a CD is removed/ inserted into the optical drive or a memory card is removed/inserted into the card reader. How can I accomplish that?
trying to detect the process, if it is not running, then only run the process, but it still runs the process eventhough the process is still running :(
For Each Proc As Process In Process.GetProcesses()
Dim strProc As String = Proc.ProcessName & ".exe"
If Not strProc = "MemberSyncFBtoSQL.exe" Then
[Code]....
I am using VB.net (FormView and ObjectDataSource) and Sql Server 2005.
I want to get last inserted @@identity in table on FormView1_ItemInserted
Protected Sub FormView1_ItemInserted(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.FormViewInsertedEventArgs) Handles FormView1.ItemInserted
End Sub My issue is that I want to redirect my FormView to readonly mode after FormView1_ItemInserted but for that I need to show the inserted record in readonly mode and that is only possible if I get my last inserted @@identity.
I have a device that communicates with the pc via a serial to usb cable. So I have made windows form with a serial communication to speak with it. The communication is every 125ms so every time it checks if the com port is open and sends the new message. The problem is that if the usb is not connected the program tries every 125 ms to connect to the serial port and the busy cursor appears always and the form is not responding to any action (for example enter into the menu or refresh a listbox). I have tried multiple times to connect and disconnect the usb while the program is running. That's mean that the serial connection stopped and started all over again several time. The problem is that occasionally it shows an error "unable to open com port".
View 10 RepliesI am having trouble getting the total due for businesses to calculate correctly. Especially when I run the program and alter the amount of connections or the number of premium channels.
[Code]...
I need to get data from 2 databases namely cable and History. The results obtained from it will be display in a datagridview. MyCommand is a sql statement i wrote. However,i have errors in it. The codes are as followed.
Dim dbset As New DataSet
Dim data As New OleDbDataAdapter
data = New OleDbDataAdapter(MyCommand)
[code]....
i would like to ask is there a method which i can read a specific file from another computer??i would like to use IP address to specify the address.
View 21 Repliesi want to make a little program that virtually REplugs my internet cable.
View 1 RepliesSo I am trying to get info from a scale using an RS232 cable into a VB2010 program. But before we even start talking about that, I don't know ANYTHING about serial ports. I need to learn how to get the data from the scale without programming first... I am using Win7. I do have a sample program (w/ source) I downloaded [URL]) It runs without any errors, then I have a big USER error, what do I push? How do I tinker to figure out the right settings on this interface? or any interface. These are the sittings for the scale: [URL] I am considering returning my scale and getting something with maybe USB on it, I need to be able to weight things up 100lbs, I am shipping car parts.
View 8 RepliesIs it possible to toggle the D+/D- signals of the USB port to activate a relay
View 9 RepliesI have a VB.net app running on one computer, displaying text into 2 texboxes or labels.I need to see the two values in two sperate textboxes or labels from the two labels on another computer via a null modem serial adapter.
1st computer.
Code:
serialport1.writeline(label1.txt)
straight forward right?
2nd computer to read the data
Code:
Private Sub SerialPort1_DataReceived(ByVal sender As Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles SerialPort1.DataReceived
dim s as new string = serialport1.readline()
label1.text = s
This is what I was thinking;
Code:
serialport.writeline(label1.text & label2.text
This would send the two values over the serial port. How would I seperate the two values and display them in two different texboxes?cannot use them together)Am I on the right path at all? Or using the serialport.writeline method won't work at all....
I am doing wrong? I am using VB2008/VB.NET to send a command (set to 4 volts) to a Tenma DC Power Supply over an RS232 cable. I don't have documentation from Tenma that lists the commands that the instrument understands, I got "VOLT040" from a program in an older version of VB that someone else wrote for this instrument. The code is below:
[Code]...
How do I check when the webbrowser is ready? The code below should work but VB.net continues to work before the website have loaded completely.
Code:
While (WebBrowser1.ReadyState <> 4)
Application.DoEvents()
End While
After lot of searching I found a working sample showing how to get a HTML page loaded. It works now if I wait until it is finished loading and then press a button to transfer HTML data into string. I tried to use webBrowser1.DocumentCompleted event but it does not fire.My question: How to get the data automatically when it is ready. Or what is wrong in my code.
Imports
System
Imports[code]......
I've been reading about i18n and how to make my app ready for localization. One thing recommended is to set the NeutralResourceLanguageAttribute in the AssemblyInfo.vb file like such: <Assembly: NeutralResourcesLanguageAttribute("en")>However, when I do that I get 'Type is not defined' Anybody have any clues?
View 2 Repliesi'm making a program that will be used Only from a CD, not ever downloaded to a PC.I just would like to have the user insert the CD into a CD-Rom Drive, and the program will Auto Start with a Splash Screen, then start/load the first windows form. The form will have some buttons on it for the user to interact with the CD, by either going to other window forms or by downloading exe files or zip files to the user's computer.
Also the form has buttons on it for the user to click on to bring up a PDF to be viewed.I have tried to do the Publish and found that it created a setup.exe...as in I think it wantes to install my program, and my program is not for installing. only viewing and interacting with and maybe downloading files from it, my CD program is never to be installed.I'm pretty sure I need to save or create my program as just an AutoRun, that starts when the CD is inserted and that is all I think needs to be done...so how do I just create a AutoRun Only version of my program, not a setup.exe?I will have a ini file to reference the AutoRun file on the CD, no problem.
[code]I have this type of xml file how i can access this xml file into dataset and i want to print name into textbox1.text and class in textbox2.text and rollno into textbox3.text how to do that ???
View 3 Repliesi have a NAS drive that is mapped to my system..My application will copy files to the drive but the only problem is the drive has a sleep function on it therefore when i try to copy files to it and it is in sleep mode, it says the folder does not exist (drive still in my computer but just with a red X on it)is there a function to make ir ready ? the only other way to do it is to double click the drive icon in my computer then it wakes up... but id rather not do this as its a pain.
View 3 RepliesLike the title says i'd like to read an existing pdf page size with VB.Net. I've been working with Itext.Sharp, and the Acrobat.dll.
View 1 RepliesI am developing an application that reads from a network shared folder on a separate Windows Server. When the application attempts to read, I am receiving the error message "System.IO.IOException: The Device Is Not Ready". I have tried running the application as an Administrator, however I still receive the same error.The files in question do not appear to be in use by any other application.
View 4 RepliesI am listing all drives with GetLogicalDrives()..
I am getting ( A:. C:, K: )
Now I want to know Each of Above Drive is ...
1) Ready or Not (To list out its content)
2) Type Of each drive...
Even if Floppy is not inserted in A: Code Should return 0
I am using GetFileCount() for A: and I am getting error..
Drive not Ready. I am using VS2003 VB.NET
How would one be able to determine if a file is closed and ready to be written to ?
View 7 RepliesI am using a webbrowser control to login to a website.[code]On successful login I have to navigate to another page. This will happen only if the login is correct. The issue here is as son as the login page is loaded the readystate of webbrowser control becomes complete and even before the I login to website the next line of code gets executed and results in an error as I am not logged in.url...How can I make my application wait for the login to be complete and then execute the above line of code.
View 2 RepliesI am trying to navigate the URL to an applet login interface. Is there a way to determine if the applet is ready to take input? You know when Java is loading. My timing is not right, and I want to be able to make it stable by determining when Java applet login object is in a ready state.
View 1 RepliesI want to be able to use the core frotz library (dll) in a different project (no WPF front end). The dll needs to accept an entire string command as the input, and produce the entire output as a string. Produce this dll and the source of the class showing me how you did it.
View 1 RepliesI'm making a hangman game (yes everyones starting point) and got the basics running. I've added so extras to it, such as reading in random words from a text file, only allowing capitals to be entered, an option of guesses the phrase etc. All very simple but a nice way to learn.
Anyway, I want it to show the letters that have all ready been entered between each guess. I want to do this by using an array and making sure the same letter cannot be entered more than once into this array.
So far i have the following:
Sub Main()
Dim GuessLetter As Char
Dim LettersGuessedArray(26)
[Code]....
and i do not know why. I want it to output the letter entered from the array "LettersStoredArray".
I have a report ready to print document, however you will make it stop reading when the records end up, give it displays this error:
Index was out of range. It should be non-negative and less than the size of the collection.Parameter name: index
I've tried an index = 0 to no avail, I think that has to do with the End print. Because I cannot make it stop reading after all the records appear on the leaves.
Server: Msg 823, Level 24, State 2, Line 1
I/O error 21(The device is not ready.) detected during read at offset 0x0000000001c000 in file 'Y:MSSQLDATAGLC2005.mdf'.
Is there an error list in vs 2003? I can't remeber if there was and can't find it in the options... The TaskList window shows the errors but also messages like 'Visual Studio is ready to deploy XY' and it is distracting.
View 3 Replies