im just wondering if you guys could help me do this for a USB device via VB
1> Check for the plugged in USB devices.
2> Find out for the available space(2GB) on each.
3> Prompting a message to user on which drive he would like to write that movie file.(As At a time i want to give only 1 disk write only.
4> after selecting the Drive, and pressing OK, i just want to copy the selected file from HDD to that Device.
I am trying to write and read bytes from usb device.I have an array dout(8) of boolean say f,t,t,f,t,t,f,t representing switch states.I need to convert that to a variable DataOut as byte. 01101101 Later I read the usb device.This gives me a variable Data as byte 10110100 I need to convert that to an array DIn(10) of boolean t,f,t,t,f,t,f,f All my code attempts have failed.
View 2 Repliesi was wondering if it was possible to write my own firmware that will run on a device im making. This device is very similar to the price portable price checkers you see in grocery stores. it scans the barcode which returns an id number. More information about my device and about the big project im working on can be found here: My Idea For A New Type Of WCP (Wireless Connection Protocol)
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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.
View 16 RepliesI have spent couple of days searching the Internet for some hints, but I haven't succeeded. I need to enumerate all removeable USB storage devices and search for a file. It's important to say, I am looking for a device, which has no drive letter assigned - e.g. Garmin GPS etc.. how to enumerate the devices, indentify storage one and/or access its files?
View 2 RepliesI have spent couple of days searching the Internet for some hints, but I haven't succeeded.I need to enumerate all removeable USB storage devices and search for a file. It's important to say, I am looking for a device, which has no drive letter assigned - e.g. Garmin GPS etc..
View 2 RepliesI have run into a problem with a couple of the "Sync" applications I wanted to create. In both instances, I am trying to connect a Portable Device to my computer and access it using VB.NET. One application would pull the pictures in from my camera, rename them, and put them in folders according to their date taken. The other would place the podcasts I have downloaded onto my Mp3 Player. I have the logic for both so that if I run it on two Windows directories, for example (C:Source and C:Destination) but when I try to access the Portable device using a directory browser, the "OK" button is disabled. Is there any way to access the directories on such a device?
View 2 Repliesi'm making a VB 6.0 project to copy files to WCE 5.0 Device. i copied a code i found in msdn but when trying to compile it send me an error: Expected: Identifier[URL]..
Private Declare Function WaitForSingleObject Lib "kernel32" ( ByVal _ hHandle As Long ByVal dwMilliseconds As Long) As Long
how to read files from an USB mass storage device. I have found plenty of posts regarding drive letter detecting and reading the files. It's OK, but what about a device, where no drive letter is assigned - e.g. my mobile phone is visible under "My Computer" as "Mobile Device". The same situation it with my MP3 player. It's visible under "My Computer" as "Sansa device". Please, could anybody help me? I need to enumerate USB devices, identify, which ones have a file system and finally, I need to read/write a file to the file system.
View 2 RepliesI am trying to create a program which will read the files that exist in a directory, and then write in a text file the specific information (full file name, date created)i have found several code in the site but i cant make it work, the machine i am running the code is XP and i am using VB2008.The code i have found is the following:
Imports System.IO
Imports System.String
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I want to develop an application which can Write, Save, Read text files(or html files) What I want the application to do is. When I open my application I can write stuffs and then it will save it to my hosting/server. Then, the application will read the text which I already save.. So far, I can only make the application read it by using WebBrowser control and navigating it to a specified URL. Example: [URL](or message.txt) Which I modified from the website not from the application. I want to modify the text or html files from my application.
View 6 Replieshow 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 have recently moved from XP Pro VS2008 to Win7 Ultimate VS2010 and all the sudden I am unable to debug code and I can't write log files (ex: c:mylog.txt) anymore. What am I missing here? I am using the same code that used to work.My biggest issue is my inablility to debug. I was writting a quick app to check a service on a remote machine and I wanted to debug this app to trap all the possible errors. So I pointed my code to check my service local. [code]
View 2 Repliesi'm using sharpdevelop to program WPF application(I'm newbie to WPF i've knowledge of VB only and no C#, is it necessary to learn C# to know WPF ?).
and i want to read CSV file first. after that i want to modify and save file. any suggestions and pointers for this ?
I have the following code for reading XML files.[code]...
View 8 Repliesreading and writing files. Let's say I have a text file with multiple lines that I want to be read into my visual basic program. The first line is displayed in textboxA while the rest of the lines are displayed in textboxB. How do I accomplish this? Am I able to use the peek method for textboxB but somehow tell it to skip the first line? Now textboxB is obviously a multiline textbox and I want the user to be able to type something into another textbox (textboxC), press a button, and it will be displayed in textboxA. How do I make the text in textboxC get displayed on the first line of textboxA and move all the other lines down the list?
View 2 Repliesin the following thread, [URL]..my first reply, writes and reads two files..
my question is, is that code used properly for writing/reading those 2 files?
for some odd reason, i feel like i am over using the writers/readers.is there a way to only use one writer/reader, not 2, as my code in that thread does, to write/read 2 or more files?
I have an application that works in both 32 and 64 bit, except that on the 64 bit system it can not open/ read/write any files.I know the 64bit file system is different, from what I heard. How can I make up for the changes? I have no access to a 64bit system, but I want to make my program able to find and open the files.
View 1 RepliesI am using this code to write files
Try
Dim ObjWS As New localhost.Service
'ObjWS.AssigningDataToTemplate(1550, arrValues)
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Here i got proble to send a large size of file like 500 mb file etc
I two files like this
Error File:
[2 14.20 34.8] X8.435 Y-1.070 211.030
Short +215.534
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From error file also i dont know how to get P value. If i used Index of ("P"). There are some other word also which contain P. Then code is not only taking the value i want from NodeList file but whole line.
Reading and writing *.amc files using vb.net 2005. how to read and write *.amc files in vb.net 2005.
View 3 RepliesI need to wqrite an app that can read through an Outlook PST file, and write messages to another PST file based on the content. I have never done any Office Automation, and was looking for pointers in getting started.
View 3 RepliesI have this code which works well:
Public Function LoadBinaryFile(strFilename As String) As Byte()
Using fsSource As FileStream = New FileStream(strFilename, FileMode.Open, FileAccess.Read)
' Read the source file into a byte array.
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Private Sub frmMain_FormClosing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing
Dim log As String = String.Empty
If File.Exists("watcher.log") Then
Dim sr As New StreamReader("watcher.log")
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No watcher.log file is being created/modified in the Release folder in my project, but it works when debugging and puts one in the Debug folder.
How would I read/write settings to an INI file?
View 3 RepliesSo I'm working on an app that needs to create files on the end user's computer to store info in (mainly text files and HTML files), and I'm trying to figure out the best location to write these files to. I've been reading various articles @ this online all afternoon, and the advice I've read so far seems to be "all over the place".From what I understand, if the end user is not logged into Windows as "admin", then there are a limited number of locations where files can be written to their computer, without them having to deal with UAC popups, etc.I would like my end-user's to have to jump through as few hoops as possible (none, preferably ), so should I only write my files to these specific locations? when I write the files to the end-user's computer, I have 2 different types of info that needs to be stored...
Info "A" is temporary data that only needs to be stored/accessed while the end user has my program open (and this data can be safely deleted each time they close my program).Info "B" needs to be stored somewhere where it never gets deleted, so that it can be accessed by my program for as long as the end-user has my program installed on their computer.So would it be best to store info "A" in the Temp folder, and info "B" in the App Data folder?And for any files that I store in the "temp" folder, do these files get automatically deleted when the end-user turns off their computer, or do I have to programatically delete these files every time my program exits?
I have a Windows Forms application that is filtering out Visual Studio solution files.
I have the code thus far to search and find the correct files and to differentiate between VS2005 & VS2010 solution files.
Now I need to write/save these files so that I can retreive them all from the same location. I need to use Streamwriter but am not too sure how to code it.
I have included my source code so far and code for the Streamwriter write and save?
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I am looking for some API or OCX or any other method to copy the existing file from Hard disk to the USB storage device.for that i would have to perform the following checks :
1> Check for the plugged in USB devices.
2> Find out for the available space(2GB) on each.
3> Prompting a message to user on which drive he would like to write that movie file.(As At a time i want to give only 1 disk write only.
4> after selecting the Drive, and pressing OK, i just want to copy the selected file from HDD to that Device.
Now For achieving this , i just need a reference of any Available API or OCX or any other method available in VB.net?
I have developed a vb.net application which creates a csv file from database. When I run it from my system it works perfectly but when I copy the files from release folder to a folder on the server and runs the .exe file it give me IO Exception error. "The device is not readyť
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