I have a program written in VB 2005, the computer used to write the code was running in Windows XP and 32 bit Pentium D. Now, my boss want to buy a new computer to run the program, and he wants the one that comes with Windows 7, 64 bit. Can my program run in the new computer without any problem? Or, is there anything that I need to change for it to run there?
View 12 RepliesI hope someone can help with a very frustrating problem I'm trying to solve in one of our Windows Forms apps written in Visual Basic 2005 and running on Windows XP SP3.
The app is essentially quite simple in concept but there is lots of code and data, however, the problem does show itself consistently. The app does the following:
1) Startup
2) Choose Access database to load data from
3) Load the data into memory as a series of collections of objects
4) Do lots of number crunching
5) Fails when entering a particular sub for the first time with an Access Violation Exception
The most difficult aspect of this problem is it only shows itself when compiled in Release mode. It doesn't show itself when running in Debug mode either within Visual Studio or running outside Visual Studio. I assume this is due to the extra 'padding' in a debug exe which is masking the effect of bad code causing the error. The problem is made worse in that the 'standard' build target machine where the problem shows itself only has a copy of Visual Basic 2005 Express so as a result I have been debugging the app at runtime using WinDbg which is tricky but sort of fun (for a nerd!).
I have read / researched extensively on the internet for solutions and as a result have tried the following but all without success:
a) checked for any badly declared DLLs (p/invoke) but the app doesn't use a single one.
b) checked for any COM references / interop. There were two references which were rarely used so I removed them and commented out the code that referenced them but the exception was still raised.
c) I've tried adding my own trace code in the problem area and the line prior to calling the Sub runs but the first line of the Sub never executes due to the Access Violation exception being raised.
d) I have used WinDbg to set breakpoints around the problem area at runtime which has confirmed 'c' above that the sub never executes.
e) I have used WinDbg to double check the addresses of the parameters passed into the Sub are correct as they seem to correctly point to the same address as the local / module level variable that was passed in.
f) I have checked all of the extensive data loading is not eg leaving DataReader objects open etc.
g) I have tried compiling the code in VS 2008 on a different machine targeting the 2.0 framework but the bug still showed itself.
I have been developing windows and web application using Visual Basic 2005 for a long time. Now i want to change from Visual Basic 2005 to Visual Basic 2008. I would like to know what ever projects i have done in visual basic 2005 will works in Visual Basic 2008. Will the existing code in visual basic 2005 supports Visual Basic 2008 or do i need lot of modification. I haven't used VB 2008 but i hear that most of the code which written in visual basic 2005 supports visual basic 2008. What are the things i need to take care when working the existing projects in visual basic 2008.
View 3 Replieswill an program built on windows 7 using vs 2008 or 2005 have the compatibility with windows xp or vista
View 5 Repliesi have a vb.net program compiled in windows 7 (32bit) but then when i run it in windows 7 (64bit) the doesnt work and it can't the Microsoft.Jet.4.0; What should I do to run the program?
View 3 RepliesI have written a windows service to do some operation (in .net), im calling the same in .net it works quite fine without any issues. Now my problem is i need to call the same service which is written in .net from an VB application.
View 4 RepliesI have question to ask.
I have a dll file written for reading&writing data on USB.To use dll in VB.Net, one needs to integrate a .vb file which interface to that dll file to use its functions, properties etc..
What I need is to use this dll in a C# project. is this possible?[code]...
I need to start MS Word 2003 from Inside VB Windows Application and Load a specific Word Document.
View 4 Replieshow to Send Email Using SMTP in vb.net 2005? Actually on my program I have loaded already emails and names on my listview and what I want is that I want to send emails to those emails found on the listview but my problem is that I don't have any idea how to send email on vb.net 2005.
View 3 RepliesI just want to know whether I can use "Reflector" to disassemble a Program written in DOS and go through all the Codes of that program to learn how that program was made? If the "Reflector" is not the one for DOS Program, could you recommend a Free Disassemler for DOS Program?
View 5 RepliesIs there some Firefox extension that was written in VB.NET / VB6?
Would be nice to have a template for changes.
I have to intercept the Firefox reloading of data (XML data refreshed regularly by some javascript routines).Pretty much as the extension "tamper" does it (url...)
I have never used Visual Basic before.
I have some source code for a project to look at. How can I tell whether the code has been written in VB or VB.Net?
I have been trying to create a timer program with VB 2010 to the accuraccy of 0.05seconds (If possible, 0.01s)I insert a timer into the form (Timer1, Interval - 50).[code]But when I run the timer for 1min, the recorded time was 48.05 sec.How can I make my timer more accurate? Is there anything i have done wrongly with the code?
View 2 RepliesIs there an easy way to convert a program written in VB 4 to VB 2009 Express? VB 2008 wil not open a .MAK project.
View 7 Repliesi have written a small program to set wallpaper on the desktop when i change the wallpaper then if I refresh the desktop then problem is that,wall paper is disappeared and a blue screen comes.secondly i want few changes i want to set wallpaper as Tile,Center and stretch i want to use radio buttons on the form for this purpose so how can i make these changes.
View 1 RepliesI have the below C# Lambda function and I need to convert it to a VB.Net code. I tried many times but I couldn't convert it the right way. [code]...
View 10 RepliesVS 2008 VB/I've implemented an interface to a .com program written in c++. I'm trying to access a data structure array(uNewValues) of type PLCCOMMLib.ANALOG_CONTIN. uNewValues should be a datastructure array of several elements (iSigIDCount). My problem is I only get the first array element of the datastructure.I've tried several methods and looked into marshalling but don't understand how to implement marshalling if that is the correct option.
Code below:
Public Sub AnalogContinUpdate(ByVal iSigIDCount
As Integer,
ByRef puTimeDateStampGMT As PLCCOMMLib._FILETIME,
ByRef uNewValues As PLCCOMMLib.ANALOG_CONTIN)
[code]....
I have a small program on the menu written in VB6 retrieve data from Acess run very fast and now want to switch to VBNet2008. VBNet2008 conversion is still normal, but when running the menu does not appear that waiting in line, then click on the menu bar of this menu appears, but not the font is in Unicode data is available. Expect you to help debug programs that run on VBNet2008 still running good access Menu fast as running on VB6. Also supported is Unicode font on VBNet2008 does not function for unicode font. Attach program with VB6 and VB2008.
[Code]...
'i have written the following code:
Private
Sub Combo_Mth_KeyPress(ByVal
sender As
Object,
[code]....
'even thogh it seems to clear the text and select default text yet user written 'keyword appears in the text area of combobox?
After upgrading code to VS2010, the error "MSB3134: The permission set requested by the application exceeded the permissions allowed by the Internet or Intranet zones. Select Full Trust or to continue using partial trust, define your custom permission set in the Security Page of the Project Designer. Bentley Software Loader". The same code ran fine in VS 2008
View 3 RepliesI am parsing a web page with the HTML agility pack in vb.net and it works great most of the time, but I have come across a site I need help with.
When I go to grab the web page with my http object (I am using chilkat http and it does not have a javascript engine) I get back the page which is poorly written with document.writes for basically the entire page.
I do not want to use the browser control to first render the page.
Do you know of anything that will allow me to parse this page easily with xpath... does xpath work with javascript? Is there a way for me to remove the javascript with the agility pack?
i need the codes which written in the key press events to enable me to connect barecode to my program
View 6 RepliesI know pretty much how to save information into a text file from runtime VB2005. However, I wish to be able to write the information into any kind of form of file that cannot be simply opened and read by anyone (such as text file can be). Is there anyway that VB2005 can do this?
View 3 RepliesI have VB 2008 Express installed in my PC. I downloaded a program source code written in VB6 but could not open the files. What do I need to do to get this codes displayed.
View 4 RepliesI am a sys admin for a company and our programmer left several months ago. a program they wrote is now failing and i am struggling to work out why. the program basically pulls data from a csv file into a readable form, written in visual basic. the application works on a couple of machines but not on a couple of others. i have matched up .Net framework versions, MS Primary Interop Assembly versions, still no joy. As the app works on some pc's i am wondering what other differences could cause this?
The error output is:
see the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
Exception Text
CODE:
JIT Debugging
To enable just-in-time (JIT) debugging, the .config file for this application or computer (machine.config) must have the jitDebugging value set in the system.windows.forms section. The application must also be compiled with debugging enabled.
For example:
CODE:
When JIT debugging is enabled, any unhandled exception will be sent to the JIT debugger registered on the computer rather than be handled by this dialog box.
I am making a program thats writing to a file. Another program is also writing to the file. Its a txt file. My program adds some text to it.When i click a button in my program, i first want it to check if i was the "last" program who wrote to that file. If i was, then it should not write. If i wasn't, then it should write to it.
I don't know a good method for this, but i know 1 method:after the program has written to the file, it gets the size of the file and saves it. Then next time it gonna write, it checks the size of the file and compared to the saved one. If its the same, it was my program that wrote to it last.
i have created some shareware applications. I implemented the following mechanism for piracy protection. Before Windows Vista and Windows 7 i did write a dll file to the System32 folder with an encrypted license key. Also in the Registry under HKEY_LOCAL_MACHINE i inserted a registry key.
The problem is that with Windows Vista and Windows 7 due to the User Account Control (UAC) this is denied.
I want to ask : what other mechanism can be implemented ? Where should i store the encrypted key file and the registry key.
I want that the application can be installed for all users of a computer only once.
If i stored the key in the user's application data directory then another user could easily just install it under another user account. Also i do not want to put the key file in the application directory because that would be too obvious.
note that i create the registry key with my application and not with the installer.
I am working on moving applications from Windows 2000 to new server Windows 2003 R2(64 Bit). I noticed that there are some VB programs and config files for those programs have been placed in Windows 2000 Registry. Some other applications are using them from different servers.Why do we use registry here? How can i move these to registry in windows 2003? Can I just move these or do I have to write VB programs to place them in 2003 registry?
View 1 RepliesI have a .net Windows Service developed in VB.net. I have a settings file in the root directory called Connections.XML and I am setting the basedirectory [code]...
When I schedule the service this is working absolutely fine in my Windows XP machine. But when I installed the same service in our development server (Windows 2003 64 bit Server) for some reason it is not able to locate this file.
It is possible to create windows service using windows form control in vb.net.If yes then please give me the url or links.
View 1 Replies