<edit> On 27th January, 2011.If you are using VB.Net 2005 or earlier then please see my 14th post in this thread.</edit>I saw a post earlier on which reminded me about Extension Methods.This led me to create the following code which acts on the base class
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I am working with VB Express 2008 and i am having a lot of errors appear when using code from other VB Versions. Is their a computability problem
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)Handles Button2.Click
'CLICK TO OPEN DVD ROM DRAW Declare mciSendStringA Lib "winmm.dll" (ByVal lpstrCommand As String, _
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I have a small application where I am importing different versions (2008, 2010) of Excel sheets and saving them in SQL server. My program will find the 2008 versions but for some reason it will not find the Excel 2010 versions. I am not sure if my code for the Connection String is correct. Perhaps someone could have a look at my Connection String code?
Imports System.Data
Imports System.Data.OleDb
Public Class DBHelperClass
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To the board: Lately I've been getting Runtime error 3447 ("The Jet VBA file (VBAJET.dll for 16-bit versions, or VBAJET32 for 32-bit versions) failed to initialize when called. Try reinstalling the application that returned the error") when attempting to open a certain program (not one that I designed, just downloaded and installed). I installed this program in January 2009, but this error began happening only this past July. someone else to information about the files vbajet32.dll and expsrv.dll. One site said that the problem was probably caused by the file expsrv.dll being absent, but I checked my System32 folder, and it's there. As far as I can tell, it has always been there (the computer was made in 2008, and as I said the program had always worked before). Vbajet32.dll is also there. I tried uninstalling and reinstalling the program, but error 3447 still occurs. I also tried uninstalling the program and installing an older version, but 3447 is still there.
I tried replacing expsrv.dll, thinking it might have been corrupt, but that didn't help, and I cannot register that dll anyway. I can't figure this thing out. Both of the files are there, and I didn't change any settings or anything anywhere between last January and this July. By the way, I am on Vista.
If I create a DLL using VB 2010 express can it be used by previous versions of of .Net (3.5, 2.0)? Will the DLL use .Net 4.0 components, which is what I want. I don't see a way to force that to be the case.
View 1 RepliesIn a VB.NET (3.5) Windows Forms application that, among other things, creates Microsoft SQL Server Integration Services (SSIS) Packages, we want to be able to support the creation of packages both for SQL Server 2005 and 2008. To create packages compatible with SQL Server 2005, functionality from external Microsoft assemblies with the specific version of 9.0.242.0 are needed, and to create packages compatible with SQL Server 2008 the same assemblies need to be referenced, but with another version number, 10.0.0.0. There does not, unfortunately, seem to be backwards compatibility in that SQL-2005 packages could be created using functionality in the newer 10.0.0.0-assemblies.
Today, we have a very inefficient way of handling this. For each new release of the app, we have to: Build two different versions of the app, one "2005-compatible .exe" and one "2008-compatible .exe", by: Manually add/remove the specific 2005/2008-references at project level (properties).Comment/uncomment respective code that is not common between the two versions of the same assemblies.At installation time of the application, figure out if the machine runs SQL Server 2005 or 2008 and then install the corresponding build/version of the app.We do not ship or install any assemblies with our application but instead rely/pre-requisite on that the machine on which we install our software has either the 2005 or 2008 assemblies installed in its GAC (depending on whether SQL Server 2005 or 2008 is installed there).
I have learned that with a few tricks it is possible to reference and use identically named assemblies with different version-numbers in the very same project. But even then if we manage to do this, since the client machine always will only have only one set of the assemblies installed in its GAC (9.0.242.0 or 10.0.0.0 versions depending on which SQL Server version it has installed), and we need to reference both sets in the project to have "full support" for both 2005 and 2008, how can we avoid potential "missing dll-messages" when the client runs the app? We do not feel very excited about having to ship/install 2005-assemblies on a 2008-server and vice-versa, that would never be used by the application, even if this would constitute a solution to the above problem.
I want to update the project with some new functionality but I want to keep the original intact.What's the best way to go about creating a new project with copies of all the files and resources from the original, but with paths that all point to the new copy?
View 5 RepliesI decided to learn reporting in visual basic .net 2005 but I didn't know what version of crystal report to be used. I've heard that we must use appropriate version for different Visual Studio. Can you please give me the exact version for VS 2005 and 2010?
View 1 RepliesVS 2010 Beta 1 offers the user the opportunity to change .NET versions.I compiled a solution then built same in .NET 4.0 Then compiled/(re)built in 3.5. The output info showed 3.5 but on an XP Pro (up to date .NET 3.5 machine) the Setup install produces an error message:"You need to obtain NET 4.0. Do you wish to get it now?"
View 14 RepliesI have two slightly different versions of my VB applications that I would like to publish simultaneously. The differences are minimal and mostly include GUI and some internal logic. Incorporating changes into a single application is not an option right now.
I tried publishing and installing them separately but the latest installer always overwrites whatever has already been installed. For example, if I install App v1, then App v2, only App v2 will be visible. If App v1 is installed after App v2, only App v1 will be visible. What I want to have is to have them both installed. I am using Visual Studio 2008.
I have a COM application (X) that references various .NET assemblies. All the .NET assemblies, with the exception of one (Y), were created a while ago and reference an earlier version of a 3rd party component, say version 1. The other .NET assembly (Y) uses a later version of the 3rd party component, say version 2.When I install the COM application (X) on the target pc, version 1 of the 3rd party component is installed in the installation directory of the COM application. The .NET assembly (Y) is installed into its own directory on the target pc and has version 2 of the 3rd party component installed in its installation directory.
When I run the COM application (X) and try to launch (Y), I get an error because I guess the COM application is forcing (Y) to use the version installed in its app.dir, in this case version 1 as opposed to version 2. Is there any way around this? It seems a bit much to have to rebuild all the projects that reference this assembly just to sync versions.
I have made a Windows Application using the VB.NET 2008. Which are the Windows versions at, my Application can work?For example Windows 98, 2000, NT, XP....
View 1 RepliesI am using using Visual Basic Express edition 2008. How can save / save as my project in different version when I make changes to the code? i.e. save the same project whenever I make a change in the code and keep the previous version of the code for future reference?
View 3 RepliesWhat 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?
View 2 Replieshow I can go about having a ini type file so my.settings don't get over written when I load newer versions of my application?
View 3 RepliesIs VB Express 2010 slower to compile and run that older versions of VB Express? I've installed it this weekend and it seems a little sluggish on my quad core computer with 1 gig of RAM. I have VB Express 2005 installed for my students at school and it seems to fly just fine. Those school computers are older P4s with 512k of RAM.
View 7 RepliesCan i use the code of vb2008 in vb 2010?
View 4 RepliesFirst off, my apologies for being a complete Newb! I have a SQL Express database that I use quite successfully to track my investments in several accounts. I built it myself, it's quite functional, and Im happy with it. The problem is that there are multiple account tables and updating them can be tedious in SQL Server, if multiple purchases and sales in multiple accounts have occurred in a month. Tedium can lead to errors¦
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This code was posted in Chit Chat and everyone is saying how great it is. I just have Visual Studio 2010 and no familiarity with VB6 so I thought it would be good to convert the code to Visual Basic 2010.
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I unfortunately downloaded and installed Visual Studio 2010 and upgraded all my programs to .Net 4. I am really unhappy with the way 2010 runs. My computer keeps locking up for hours, programs take a long time to compile... Those are a couple of major issues.
View 3 RepliesI thought would be a simple google search but apparently I am not searching correctly - or something...
Does anyone know if I can do this? I would like to start working with 3.5 however all the projects I am doing are still in 2.0
I am developing a plugin into a third party control. They ship a SDK dll with their application to allow you to do this. However I am writing the plugin using version 1.1.0.0 of their SDK, but when trying to run the application on a clients machine that has a new version of the software the SDK version is 1.4.0.0 and my app throws the following error:
System.IO.FileLoadException: Could not load file or assembly 'MyDll.dll, Version=1.1.0.0, Culture=neutral, PublicKeyToken=764d581291d764f7' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
When the dll is referenced into Visual Studio I have changed the Specific Version property to false, however this has not made any difference. The dll is not reference from GAC.Is there a way that I can tell my application to just use the version of dll that is on the users machine? I have checked with the 3rd party vendor and the functionality that I am using has not changed in any of the versions as they use a back-ward compatibility approach to their software.
I had a weird series of errors involving e.Graphics.DrawString() when painting a panel.I am using a barcode font [Code 128] with a library that converts text to the proper format for Barcode readers.That's fine, however, when I draw it to the panel, that's where things stop being fine:But, here's where things get funky. When I put it into a TextBox instead of drawing it via Graphics.DrawString(), everything is peachy:In fact, the TextBox one looks much better than the Graphics.DrawString() one! Am I doing something wrong?[code]
View 2 RepliesWondering if it is possible. It works on the idea that all files share common code. The program would ideally analyse the source file and compare it to the reference files. It would then find common parts of the code and write it to a rebuild file. At the end the rebuild file and the reference files would then be able to rebuild the source file without it being present.
For Example.
source file code = xxyyzyzyxw
ref file 1 = xyxxzyzxwyy
ref file 2 = zxxwyzzywxx
The program would then analyse these files and make a rebuild file like the following
source(0,1) = ref1(2,3)
source(2,3) = ref1(10,11)
source(4,7) = ref2(5,6) + ref2(5,6)
source(8,9) = ref2(2,3)
Thus you would be able to build the source file using these instructions and the reference files.
I have a dataset that I export to xml (using ds.WriteXml) and then use an instance of Microsoft.Office.Interop.Excel.Application to open and manipulate the xml data, then save it as an .XLS file.I have office 2007 (why don't they have help/about in an easy to find place... man I hate those stupid office ribbons and the person who developed them...)Anyway, this code works fine for me. But when I put this on a machine that has office 2003 installed, it crashes.So, what do I need to install, reference, buy, etc. so that I can do the same thing on machines that have 2003 (or before) installed? No, I can't install office 2003 (my first thought).
View 8 RepliesI have an application that uses a Microsoft DLL (Microsoft.ComponentStudio.ComponentPlatformImplementation.dll) which is used for OS deployment and accessing the catalog files. Version 6.0.0.0 is specific to the Windows Server 2008 catalog files. The newer version 6.1.0.0 is specific to Windows Server 2008 R2 catalog files. Attempting to access a catalog file with the incorrect version results in an exception.
My application (VB.NET using VS2005) needs to be able to access either version of these catalogs - I'd be happy with two executables (one for each catalog version) but obviously I don't want to maintain two sets of source code for each. Specifying both sets of DLLs in the project reference is not possible as the DLL names are identical. I'd rather not have to manually add and remove the DLL references each time I want to a build. As far as I know the interfaces etc are effectively identical between the two.
Is there possible to built application which is automating something with some cain of interejs that provide to switch any version of excel? I just want to built universal code for any cain of excel 2000/2003/2007/2012 and just could switch in code if u know what I mean..
View 5 RepliesAny best practices on how to deal with different versions of base classes.We have made significant changes to the base class but still have lots of code inheriting from the old base class. Could you recommend how we introduce new base class.We'd like all new code to use the new base class. But, we would like the option to have old code still inherit from old base class so we have time to switch and test old classes with new base class.
View 11 Repliesknow where I can get a list of the differences between VB.Net versions? For example, in which version were generics first introduced, and when did the "Using" keyword come into being?
I've tried googling it and all I seem to get are the differences between VB6 and VB.Net, which isn't what I'm after.
The application was developed with Excel 2000 but doesn't work with 2003 or 2007. The save isn't working. Everything I have googled shows this to be a common problem. I just haven't found a solution that works. [code] We the willing, led by the unknowing, are trying to do the impossible for the ungrateful.We have done so much for so long with so little we are now qualified to do anything with nothing.
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