i had an old oledb connector from a .net 2003 application i tried to follow the same steps i used for that but it wont allow me to edit the access database.i was trying to avoid using sql strings because my database is rather large and the primary use of this db is for data entrys.
View 3 RepliesI have several programs that must write to HKLM in XP and Windows 7/64 Pro.The programs work in VB6 but not in VB.Net 2008 on target machines. It does works on our development machine. Same exact windows. User is an Administrator.NOT using Run as.
Both programs are using the same function
Declare Function RegCreateKey Lib "advapi32.dll" Alias "RegCreateKeyA" _
(ByVal lngRootKey As Long, ByVal lpSubKey As String, phkResult As Long)
[code]....
How would I read/write settings to an INI file?
View 3 RepliesI have an INI file built like this:
[registration]
key=<key goes here>
passkey=<passkey here>
and using a registration system (found in codebank here), I'd validate it like that. I just need to know how to read and write from it. All the ones on google are too vague, or focus on the wrong part.
So I have a database in Microsoft Access (its path is c:database.mdb). There are two tables. Table1 and Table2. I would like to read each row of Table1 to an array, and write a row to Table2.
I have looked all over google, but I couldn't find anything that worked.
How can I make txt files and read them in VB2008? The text file does not just consist of one single line. But probably more than a single line.
How do I read the txt file and put each line in one variable.
For example, the txt file:And read it, putting each name in an array variable.
I have written tons of websites with PHP and MySQL, now I want to combine a website with a program on the computer.I have searched google, but I cannot find a good tutorial on how to use MySQL on a server with Visual Basic.NET I need to connect to my MySQL database, read data, and write data.
View 6 RepliesI am trying to read/write a simple text file in net 2008 but can't, as yet, get it to work. This is how I use to do it in VB6
Code:
MyStr = App.Path & "DataData.txt"
Open MtyStr For Input As #1
[code]....
I have gotten this error: Attempted to read or write protected memory. This is often an indication that other memory has been corrupted. Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code. Exception Details: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory has been corrupted. The error is at code in red.
[Code].....
I am trying to use a .dll in .Net that was written in C++ and was previously used in a VB6 application. I get the error mentioned above. I see lots of posts referring to how VB6's long data type is different in .Net but these fuctions use only integers and strings. Can anyone tell me what is wrong with this?
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Module1.lp_checkout("Redistricting", "9.0", 1)
End Sub
[Code]...
I am working on an application that starts a few threads every second. The threads don't do much, and everything seemed fine. I monitor the number of threads running, and I have never seen it higher than 4.
Last night I started the app and this morning I had this.
System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
The threads can make changes to two List(of Strings) and I had SyncLock's surrounding the code that did that. It has been running for several hours again and all seems well.
My question is that I found a place in the UI thread that was copying the list without the lock. Could that have caused the error?
how to debug something that isn't going to fail conveniently?
I have a .dll file ( MySql.Data.dll ) that I'd like to be able to open, view and possibly edit the database but I can't find any examples or documentation on doing so.
[Code]...
How can I write and read a string array to a text file?
View 2 Repliesi have the code bellow to write a structure to a text file, but nothing is happening,how can i get a error message if the file doen't exist?
Imports System.IO
Imports System.Runtime.Serialization.Formatters.Binary
Public Class Form1
[code]....
i am trying to open and navigate to second web browser when i recieve this error; here are the details;
System.AccessViolationException was unhandled
Message="Attempted to read or write protected memory. This is often an indication that other memory is corrupt."
Source="System.Windows.Forms"
StackTrace:
[Code]...
I have this gamepad: [URL]I want to write a small application that is able to read what button is pressed on the gamepad.I've seen this thread:[URL]but this does not read the input of the controller, it only initialize it.[URL]
View 7 RepliesI cannot use Visual Basic 2008 at all. When I go to "new project" and choose "Windows Form Application" I get this error.I have tried multiple uninstall/reinstall with no result.A microsoft reply to this suggested that I needed: " .NET Framework 2.0 Service Pack 1 " I checked, and I did not have the .netframework 2.0 service Pack 1.
When I tried to download and install the above from Microsoft.com, the istaller said that "it was not allowsed" and I was not able to install the service pack 1.
I tried Uninstalling net framework 3.5, 3.0, 2.0 and then reinstalling .netframework 2.0 sevice pack 1; then reinstalling Visual basic 2008 express edition. At the reinstall of Visual basic 2008, .netframework 2.0 sevice pack 1 is unistalled by .net framework service pack 2.When I check the foruims for simiar problems, the formus are mostly for Visual basic 5.0, or other programs that I do not have.
Here is the programs I have installed:
Operating system: Windows XP
Microsoft .net framework 1.1
Microsoft .NET framwork 1.1 Hotfix(KB928366)
Microsoft .Net Framework 2.0 Service Pack 2
[code]....
All the security updates and hotfixes for Widows XP.
how do i write to the windows registry and read from the registry?i'm using windows 7 - 64 bits, and visual studio 2008.
View 1 RepliesI have a folder called movies. In this folder is a collection of different movies each in their own folder with their own xml file called movie.xml.I would like to extract lets say the localtitle and aspectratio from each movie xml and send to Excel. What code would I need to achieve this?So far I have the attached code which reads only one file and it is directly from the xml outside of a folder.
View 36 RepliesIs there anybody out here in the VB, C# 2008 world that can direct me in the right direction? I do not want anything that has todo with c/C++or Direct Draw. When converting, there is no equal for SizeOf, and a few other things. I am using Lame 3.98.2.exe in my app along with LameShell that works fine for resampling, but , not for decoding an mp3 to wav or encoding a wav to mp3. You can find the LameShell project at [URL] . LameShell is a wrapper for the Lame.exe file. Here is the complete LameShell class file along with my app button clicks for the following,
[Code]...
I am trying to extend an application to to write the details from textboxes on a invoice form to an xml file.I have created 3 methods for my invoice class which will open the invoice xml document, write to it, and close it.The open Invoice method creates and invoice.xml file and writes a start tag named invoices.
The WriteInvoice method writes an invoice element for the invoice with attribute named customerName and three child elements named ordertotal, discounTotal and Invoice total. These values are taken from the textboxes form the form.
The CloseInvoice writes the end tag for the root element(invoices) and closes the file.
I have wriiten code for these methods but can only get the open invoice method to work.
My code for the 3 methods is shown below:
Public Sub OpenInvoices()
Dim sInvPath As String = "C:MurachBeginning VB.NETExercise startsVB.NETChapter 14InvoiceInvoices.xml"
Dim InvoiceWriter As New XmlTextWriter(sInvPath, Nothing)
InvoiceWriter.Formatting = Formatting.Indented 'Set formatting of XML file
[Code]...
Reading a .txt file in VB.net. My file path is C:UsersMyLilMulePepeDocumentsVisual Studio 2008Projectscurtain_calls.txt.
This is my line of Dim LoanOptionsFile As String = "C:UsersMyLilMulePepeDocumentsVisual Studio 2008Projectscurtain_calls.txt"
I can read the file when I run the program, but how do I write the file path so that someone else can download my program and file and read the file on their system?
I have several programs that must write to HKLM in XP and Windows 7/64 Pro.
The programs work in VB6 but not in VB.Net 2008 on target machines. It does works on our development machine.
Same exact windows. [code]...
How to communicate with a USB port using VB.NET?
View 1 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 ?
How do I read, write and delete a registry using VB 2005/2008?
View 1 Repliesrecommend some tutorials that show very simple examples on how one can read / rwite to an SQL db?
View 3 Repliesi'm trying to read from a file and copy the text into a 2d array withought the selected item from a list box then rewrite the file from the array into the text file. however it writes a single part of the array times the variable count when i write back to the csv file. within the array everything is correct its only when i rewrite to the file is when the problems occur.
[Code]....
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 Replies