Program Works Writing Error?
Mar 29, 2010
Just completed a program, and tested it. It works, and does exactly what its supposed to do, but I continue to get this error: Cannot Write to a closed TextWriter.The code I'm using is below, but the issue here which I'm guessing would be that in my If statement.[code]'Goes on to create a bunch of tabled XML text.I have this code copied throughout each If Then loop. Basically If the text box is blank then the program will close the table and stop writing.I know the problem most probably lies in that its reading that its trying to close the table or stop writing, but the program forces it to continue.
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Jan 24, 2011
How do I write a vb10 program that works in windows me. I am getting an err message saying MSCOREE.DLL expects a newer version of windows.
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Aug 5, 2010
I used autocomplete sub in one combobox keyup.It works fine in windows xp but got an error in windows 7. The error said:invalidargument=value of '-17310416' is not valid for 'length'.Parameter name:length.(-17310416 will change based on selection of combobox)
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Public Sub AutoComplete(ByVal cbo As ComboBox, ByVal e As System.Windows.Forms.KeyEventArgs)
Dim iIndex As Integer
Dim sActual As String[code]................
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Aug 1, 2011
I've been struggling with this for hours. I'm making a vb program to track volunteer hours. I have some fields that a user can fill in and then click update and it should add the volunteer info to the database. To confirm that it was added I'm using a datagridview that can be updated to show the volunteers in the database. My success msg says that the insert worked, and the information is showing up in the datagridview but when I close the application and go to 'show table data' for the volunteers table there is nothing there. I've tried adding .Update() to my VolunteersTableAdaptor and I've tried resetting my SqlCeCommand after the ExecuteNonQuery() call, but these haven't worked. When I hover over the last word 'Volunteers' in this code:
Me.VolunteersTableAdapter.Update(Me.AddVolunteers.Volunteers)
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Nov 23, 2010
I have a program that uses the mouse to find window captions. I made a test program that just does that and it works fine. I copied and pasted the code into my other program and it doesn't work. The mouse position changes, but it will only get the caption of a window if it is at the top of the screen. It seems that only the Mouse.X position is changing, but I put the MousePosition.X and Y in a label and they are both changing. Can anyone explain why this is happening?
[Code]...
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Nov 15, 2009
I have created an application using VB.NET in VS2008. When I run the app in the IDE on my development machine it works fine. It also works fine when I build it and run it as an exe on any machine that also has Visual Studio installed (at least 2005 and 2008 anyway) However, when I try to run the compiled executable on any machine without Visual Studio it throws up an error "[program name] has encountered a problem and will close..."
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Dec 8, 2009
I'm creating a db tool for automatic database repairs i have the following sql statement:
[code]...
Where the 'BrokenDbFile' is the location of the db where data has to come from and the 'sqlString' = the access statement.it gives a error when i put it in a try the exception is of type OleDbExceprion and de message text is "De instructie INSERT bevat een syntaxisfout" in Dutch Where it says that the syntax of the INSERT INTO is not correct. but when i paste the string from my inteli snce into access it works fine.
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Aug 12, 2011
Problem: The excutable of the vb program crashes when trying to run but when I step through the program inside of visual studio it runs successfully.
Details: The program performs a winscp.com transfer from a ftp server and then takes the downloaded file and extracts the data from it before sending it to a webpage. The program also decrypts a des3 encrypted file which holds the login details for the sftp server and the webpage.
My Thoughts: I was thinking this could be something to do with the excutable jumping ahead of the slower transfer and decrypt functions thus causing a "file not found" exception to be produced and the program to exit. Lending to this if I slowly (aka spend 10+ seconds stepping through the code) move through the code it works just fine.
As requested Crash Messages:(I capture everything in exceptions and exit properly so no "crash" is reported but the error I get in my logs is as follows:)
1st run with standard test case:Could not find file 'C:UsersAdministratorDesktop..ILC2INFOENC.txt'
2nd run standard case (the file above was not deleted by my cleanup function either as it could not be found)Could not find file 'C:UsersAdministratorDesktop..ILCNETSL10663.csv'
Background:The first file that is found missing is the encrypted login information file while the second file is the winscp.com downloaded csv file.
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Jul 1, 2012
I use try catch finally to handle errors in my program. And these work fine when i debug application, but when i install it, error handling does not work?!
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Jun 1, 2011
<p>I cannot for the life of me figure out why the below code works when I fire it from my localhost but does not work when I publish it. I am unable to remote Debug </p><p>but it seems that I am getting Error 2250... I've tried searching for it but its too damned generic a code?</p><p> </p><p>All I want is the UNC, why is everything in .NEt so damned difficult?
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Feb 27, 2010
I downloaded HWID Which lets me create lock to pc for my app Original source works but when i try and add that to my app it dosent m i Missing something ?This is the code
Imports System.Net
Imports System.Management
Public Class Form1
[code]....
I coppyed original source as u see above to my form3 which will be loading screen but some reason I get errors above code is exacly the same?
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Dec 17, 2010
I've made a simple knowledgebase program which contains example documents. The documents are stored in a folder, and in an accessdatabase stands the information about the documents.The program also includes a simple search option. The program itself is located in a folder on a network computer.It has to be a network program for collegues can add other examples.Now it gets weird. at least in my opinion.When I run the program locally -> no problem.When I run the program from another network PC -> no problem.But when I run the program from a network Thin Client -> shaboom..At least when I enter a search option and the connection to the database is opened:"Application attempted to perform an operation not allowed by the security pollcy. To grand this application the required permission, contact you system administrator or use the Microsoft .NET framework configuration tool."[code]Now I've found a LOT of topics in this forum and many others, and it's clear that apps from another network location are run without "full trust". And the trust issue can be handled with caspol or web.config. Although caspol is a mystery to me and web.config didn't seem to work.But since it's so explicitly crashing on Thin Clients.
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Aug 30, 2009
how do i make a program in visual studio 10 that works on older .net frameworks?
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May 5, 2011
The program has errorhandle and write log function, however, it could not catch the error message in the program.
The following error message in Event Viewer. Error Module: oleaut32.dll ,version 5.1.2600.5512, error code: 0x000048f9
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Mar 3, 2010
What is the best way to make a program that works with multiple versions of Microsoft office? I own office 2007, so my program uses the office 2007 com objects. When I try to use my application with office 2003, I get errors related to the com objects. Does Microsoft have com objects that are compatible with multiple versions of office?
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Aug 9, 2010
In VS2010 I'm encountering a PInvokeStackImbalance error when I call an unmanaged C function that takes a string argument. This only happens in VS2010 (works fine in earlier versions of vs). I know the MDA is more strict in VS2010 but I can't seem to figure out what the actual problem is.
[Code]...
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Jun 15, 2009
I am trying to Read a text file from vb.net and then write it to microsoft access. The following is the codes that i have written for this project.
However, there are errors stated:
1. error in inserting record
2. Warning 1 Variable 'DoCmd' is used before it has been assigned a value. A null reference exception could result at runtime. C:Documents and Settings�74958XDesktop6jun[updated]6junForm1.vb 63 9 6jun[code]....
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Jun 8, 2011
I have written a program to track the membership of a local gym that works perfectly on every computer EXCEPT the computer at the gym. I am pulling out my hair trying to figure out what the difference is any why ONLY that machine throws an error.
Background: The program is written in VB.NET (2008) and calls a MS Access db (PROVIDER=Microsoft.Jet.OLEDB.4.0;). The computer in question is a Vista machine that is extremely slow (I think it's a Celeron with 512 RAM).
History: I have tested the exe on a Windows 7 machine in 32bit and 64bit. Tested on a 2000 and 2003 server with 32bit and 64 bit processors. Testes on a Mac running parallels with XP. Tested on machines with Office XP, 2003, 2007 and machines without Office (thinking it was a resource that was missing) Every machine works but the Vista machine.
The error occurs when the program is trying to update an existing table with a new value that is valid. The field is set to text so I know it's not a casting problem. The error message is a general exception that reveals no information. I can continue from the error but it does not complete the change to the db.
One other interesting note is that the database is accessed across the network so multiple people can use the program at the same time. Unfortunately the Vista machine is the "server" and is the home for the db. The other machines are laptops and are not always accessible on the network. If the program and db are local to the laptops then the program works perfectly. If the db is accessed across the network and the program is local to the laptop then the program crashes.
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Aug 16, 2009
I try to write some data in a ini file. i can do that first time but second i give me an error[code]...
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Jul 30, 2011
I had one semester of vb.net in college and it was lacking at best. I am trying to write a few lines to a file on my desktop. When i implement the program it will actually find a file in a network share but the concept should be the same. I am basically writing a program to combine multiple csv files into a single file. I have the entire program written except combining the files. this is my code so far. it's incomplete but after i can figure this issue out the rest should be pretty easy. i will later on add parameters and all that fun stuff.
Public Sub writeFirstLine()
fileWriter = New System.IO.StreamWriter("cusersmyusernamedesktopforktruckfile.csv") 'the error happens at this line
[Code]....
I have a file already on my desktop with this name. in the actual program i will have to create it or delete it and all that fun stuff but for simplicity at the moment i just need to find the file.
at the moment it gives me an error that says directory not found. it seems to be looking for a file in the project folder instead of on my desktop. how can i get it to look at my computer instead of the file the project is held in?
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Jun 24, 2009
I wrote the code and it runs through it perfectly, the problem is that it will only save it to the database temporarily. So once I close down visual studio for the night and come back to it what's been entered is gone. It's not a published program still in debug mode but I've not run into this before. I have another program I'm working on that I'm running purely in debug mode and it works flawlessly. The code between the two is the same cause I just copied it and changed the parameters. Any ideas? I'm using an sql mdf btw.I should clarify, don't know if it matters or not, that the DB that is working is in SQL server whereas the DB I'm having trouble with is a mdf that I added into the program.
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Mar 23, 2011
Ok this is what I have so far. Now the numbers are not adding up at all. When I type in the name and it ask for the code then the monthly sales and commission are at 0 and they should be. [code]
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Jan 7, 2011
This is a program I am making for a game he is making. All it needs to do is add information from textboxes into sql fields when clicking create account. That is working perfectly however if I tell it to add an account a second time it crashes. saying ?
[Code]...
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May 15, 2012
I have one tool which we developed on visual studio 2010. there are basically two parts of my project, one is UI part which i wrote in VB and algorithm part which is in C++ on back end. When we compile C++ part it creates a .dll which is used by my front end VB program.
Now my problem is little weird since i am compiling and deploying this tool on windows xp machine but some of the users are using windows 7 64 bit machines and after running the program for about 5-10 minutes, it crashes on windows 7 with following error
Not enough storage is available to process this command and when i view details of that error, i get the following description.
See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.ComponentModel.
************** Loaded Assemblies **************
mscorlib
[Code].....
i am completely clue less for this error since this program works fine on xp but doesn't work on windows 7.
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Feb 8, 2011
I am getting an error message when I am attempting to write to an excel worksheet using VB.net 2005
Operation must use an updateable query I have gone thru the S/O search results[URL]..My code is:
[Code]...
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Sep 10, 2011
What i've written opens an Access database and one can read and write into it (on a table called Journal)It does indeed work for newly made Access files. However it doesnt work with a specific Microsoft Access database (again .mdb) which was made with a very old Access, like Access 2000 or something.The error message is: Syntax error in INSERT INTO statement.Inside the zipped file below you will find the source code of the program, along with an access file that the program CAN read, and the one access file that i NEED the program to reed but it cannot!
To see what i mean run the program one, try to add a new line to the database. you get an error!now rename the Journal.mdb to "journal.bak.mdb. And the journal_working.mdb to Journal.mdb try to add a new line to the database again without altering the source code at all. it succeeds now!!
NOTE: the program can READ data from both files. but it CANT write data to the old access file
this is the code:
Dim cb As New OleDb.OleDbCommandBuilder(da)
Dim dsNewRow As DataRow
dsNewRow = ds.Tables("AddressBook").NewRow()
dsNewRow.Item(1) = txtFirstName.Text 'or .Item(1) =
[code]....
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Jan 30, 2011
Application log file have been created to monitor the process and following code has been used to write the log information into text file. For the first time there is no error encountered when the application runs for hours, may be 3 hours i am getting following error "An unhandled exception of type 'System.StackOverflowException' occurred in mscorlib.dll" [code]...
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Nov 28, 2011
I am trying to create a countdown to a date that the user can enter. I think I got most of the code in the button that saves the date. It gets the date the user entered in comboboxes, creates a txt file, then writes all the information to that txt file. I tested it out, but it didn't work. It created the file, but when it tried to write to it, it errored. The error says "The process cannot access the file 'C:Countdown.txt' because it is being used by another process." This is the code.
Dim enteredmonth As String = monthcb.SelectedItem
Dim enteredday As String = daycb.SelectedItem
Dim enteredyear As String = yearcb.SelectedItem
[Code]....
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Jun 13, 2009
"An unhandled exception of type 'System.StackOverflowException' occurred in mscorlib.dll" when writing to registryI write to the registry quite often in my program (Around 10 times every 12 seconds) the error doesnt constantly pop up sometimes it can save 20times and on 21st ill get the above error. How can i fix this. Is it because im saving so often?
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Oct 29, 2010
i am trying to append text to a file. I have tried streamWriter, fileStream, file.writealltext, file.appendalltext every single time i get an error "Object reference not set to an instance of an object" the path is correct and when i use file.exists it says it exists?
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