I have developed a C# winform application in Visual Studio 2010 that connects to a Access 2010 *.accdb database. It works fine on my pc but when I install it on another, It throws the error "The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine."
I tried to compile it to x86, as advised, without any succes.
Any help/advice is appreciated, I think that I should include this driver as part of my clickOnce install. If so, how do I do so? (It does not appear as an option in the checklist of requirements, in VS Properties > Publish > Previous requirements)
You will have to use a more advanced method of deploying the necessary driver - ClickOnce won't do it by itself as far as I know. I also don't think it's as simple as a single DLL. The driver needs to register with the system etc.
There is a big issue with the Access drivers because of the way they are set up. If the user has Microsoft Office with Access installed, they will already have the ACE driver. The problem is, if they have 32 bit Access installed on a 64 bit machine, your 64 bit application will not be able to talk to Access because the machine only has a 32 bit driver, and you cannot install both.
If none of your users have Microsoft Office with Access, then you should be able to deploy the standalone driver installer for 32/64 bit as necessary with each computer.
It is possible to include arbitrary assemblies and files as part of your ClickOnce install by adding them to the project and changing their file type to Content. They will then appear in the list of Application Files.
Note that you'll get a warning from Visual Studio if you do this, but it can be safely ignored.
You can build an msi instead of oneclick and create a custom action that would install ace driver in quiet mode. Since its an executable you can just run it in a process object
Related
Context
For a bit more context, the company I work for made an Access vb.net application that runs inside MS Access. They wanted to upgrade and create a C# WPF frontend for it. This works great except for the fact that when I installed the application and downloaded the [dummyDB].accdb (32-bits 2016) the application immediatly broke with the error :
The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine.
I then installed the 2010 AccessDataBaseEngine from Microsoft and a new error apeared:
This Database file requires a newer version of Access
Naturally I went back to Microsoft, downloaded and installed the 2016 x64 (my system is 64-bits) and tried again.
Sadly we we're back to the first error. So i tried to install the 2016 32-bits AccessDataBaseEngine but ran into the problem that I had already installed 64-bits office products. (I also uninstalled all the previous 32-bit AccessDataseEngines)
We of course don't want users to reinstall all their Office products just to use our application.
Question
Is there a NugetPackage of somesort that we could use so the customer can interact with the AccessDatabase out of the box?
If not, is there anyway to make it so they wouldn't have to reinstall all of their Office products?
ps. Different DataBase files 32-bit and 64-bit for users is also not an option because different users with most likely different systems will have to access the same database file.
I don't know if I'm being completely oblivious here, but any help would be greatly appreciated
Application info:
WPF application (.Net Framework 4.7.2)
Build Target : anyCPU
Is there a NugetPackage of somesort that we could use so the customer can interact with the AccessDatabase out of the box
No, not as far as I know.
If not, is there anyway to make it so they wouldn't have to reinstall all of their Office products?
You could write an wrapper that handles both 32 and 64 bit versions of the access driver. I.e. if the installed driver is the same platform as your program you can just continue as usual. If it is another platform you need to start a new process with the correct platform, and delegate all the database work to this process. If your process is anyCPU and is run on 64-bit windows the actual platform will depend on the "prefer 32-bit" flag.
Another alternative is to build both 32 and 64 bit versions of your entire application and run the one matching the office installation. This might be easier, but might not work if you have other platform specific dependencies.
This all assumes that office is already installed, if it is not you can just deploy the stand alone ace driver (i.e. AccessDataBaseEngine) with the correct bittness. The database file itself is platform agnostic and can be accessed by either 32 or 64 bit processes. It is the driver that needs to be of the correct version.
Note that Access is kind of difficult to work with and rather error prone. If this product is intended to be long lived I would suggest migrating to something better sooner rather than later. SqlLite is a popular embedded database engine that could be an alternative.
I have just moved from a 32-bit Windows 7 desktop to a 64-bit Windows 7 Laptop. We have a C# program that we are developing that contains approximately 60 projects within the solution. I keep getting the following error whilst trying to build:
Attempt to load Oracle client libraries threw BadImageFormatException. This problem will occur when running in 64 bit mode with the 32 bit Oracle client components installed
Obviously the error is quite self explanatory and I am trying to get my whole solution to load in 32 bit mode. I have gone through every single project and set the target platform to x86 but I am still getting this error. I have searched Google and seen countless different approaches, but I cant seem to fix this problem. What is the best way to ensure my project is running in 32-bit mode on a 64-bit machine?
I am using Visual Studio 2008. I am currently considering downgrading to 32-bit but really want to avoid having to do this.
I found that you have to install the 32-bit Oracle client (you can download the installer from their website) even if you are running on a 64-bit machine.
In addition, during the discussions people were talking about 32-bit mode etc. This is how you can check / set that for an IIS 7 hosted application. You shouldn't need to change this but I have added here for completeness / future reference.
Launch IIS 7 and expand the server name node.
Click on Application Pools node and find the
application Pool you are using.
On the right-hand panel click Advanced Settings...
In the pop-up box that appears check Enabled 32-Bit Applications setting which is third option from the top.
You have to change your main .exe file to run only as 32-bit. You can do this in Visual Studio - just change Platform target from "Any CPU" to "x86".
If this is not possible, use corflags.exe which forces an existing exe to be a 32-bit application.
I have been struggling with this issue for months now and finally solved it. I think all the posts are helpful, but I had one missing piece. I didn't have a Microsoft ODBC for Oracle instance setup for User DSN or System DSN. I'm working on a Windows 8 machine. So for me I had to go to the general windows search and type in ODBC and open the ODBC Data Source Administrator (32-bit). Check to see if you have a Microsoft ODBC for Oracle setup on the User DSN tab or the System DSN tab. If not click on Add and select Microsoft ODBC for Oracle. Fill out the info for your datasource you are trying to hit and click ok. Make sure to restart your computer and that is what finally worked for me. Hope this helps some of you.
You have to change your main .exe file to run only as 32-bit. You can do this in Visual Studio - just change Platform target from "Any CPU" to "x86".
https://msdn.microsoft.com/en-us/library/ms185328.aspx
In my case 64 bit Oracle client was installed on my machine but still giving same error. So, I have analyse that in my application go to Application right click go to ->Properties->Web tab
and uncheck the "Use IIS Express" option if you are using local IIS Web server.
Problem got solved.
Alright, so I've got a Windows service that has a FileSystemWatcher that watches an output folder for some Visual FoxPro database files. And it leverages the VFPOLEDB.1 provider to read those files. I cannot go away from this provider because it's being used in production.
However, I've never had to support this application before so that's why my development box isn't setup for it. Here is my environment:
Windows 7 x64
Visual Studio 2005
.NET 2.0 Windows service
so, when I first started getting the error I figured I just didn't have the provider at all, and I was right. So, I downloaded and installed it from here.
I then proceeded to drop the files in the folder again, but I got the same error.
I figured because it's an x64 machine I might be experiencing problems with it getting registered since it was probably dropped into SysWOW64, and it was as I expected, so I ran this command:
regsvr32 "C:\Windows\SysWOW64\mscomct2.ocx"
and it said it was successfully registered (which means about nothing LOL) but I dropped the files in again - same error.
I have not yet rebooted my machine, and I can if somebody has a compelling reason that's the problem, but generally speaking if the assembly is registered properly with regsvr32 that's not necessary. I've worked with a ton of COM objects and never have to reboot to get to the object as long as I've registered it.
Does anybody know another step I need to perform to get this thing registered?
It is registered as it should. It is your application that is compiled for AnyCPU Platform.
In x64 operating system this produces 64bit code and 64bit code could not access 32bit drivers.
Change your Platform to x86 and you will be fine.
EDIT
Two years later there is something to add to this answer. Now with Visual Studio 2013 the cheese has been moved. The article linked explain in great details how the compiler setup defaults has been changed. The AnyCPU target CPU with Prefer 32 bit means that your application works as 32bit app also in x64bit operating systems leaving practically no-room to x64 application unless specifically required.
With this new configuration becomes also important to remember what is posted in comments below by Mark Berry. If your (now 32bit) app needs to work in a IIS 64bit environment you need to set the Application Pool with Enable 32 bit Applications
I have desktop app (Win7 x64 VS 2015) - and kept getting the same error no matter what. I changed platform target to x86, installed MSI as admin etc - did everything I could google - and no luck. What helped me is to install MSI for Everyone instead of Just me - one of the last wizard's screen in the setup.
I have the same problem.
I install the VFP Ole DB Provider in my system and resolved.
download link
use Advantage OLE DB Provider,works for 32 or 64,here is the connection string
I am new to .NET application.
I have developed the application on 32 bit OS with Visual Studio 2008.
The application required the Microsoft.Interop services and for PDF services to open PDF files and MS Office files.
It also required SQL Express for database operations.
The application works fine on 32bit OS.
Then I created the setup for 64 bit OS, I added a new Setup project with wizard in Visual
Studio 2010 and select the Primary output and Localized resources.
But it does not included the Resources folder to the Application folder.
I set the target machine 64x and build the project, also before building give the prerequisites to the project which is Windows Installer 3.1, and .net framework 4.0, I have used the .net framwork 3.5 in the application.
Then I ran the setup, which executed successfully.
But when I tried to run the application it gave the message "Application has stoped working. Finding for the solution from the web.." and it closed.
Then I saw that there was no resources folder so I just copied the resources folder to the application where it was installed. Then the application worked fine.
So I created the setup again but this time I also provided the Resources folder to the application folder. Built the Setup and tried to run the application but the same message is prompted to me as it was giving before "Application has stopped working...", so I looked for the resource folder and all the required files which were there.
Creating a separate 64-bit version makes no sense in your case.
You have dependencies to 32-bit components; as a consequence, all1 your assemblies must be compiled to the x86 target platform and be installed using a 32-bit MSI.
If you get an "Application has stopped working..." error, this indicates that an exception occurred that has not been handled by your process. You can get the stack trace e.g. from the event log.
1 In fact, at the least the entry assembly must have an x86 target platform, and all other assemblies must have either an x86 or AnyCPU target platform.
Check you have changed the platform target to x64 or AnyCPU in your project -> Build Properties
hey friends thanks for answering my question. Finally doing a lot of things I found that it was converting the sql database to 2008 while creating the setup. And I was setting the sql express 2005 on the client machine. Then I changed the sql server 2005 to sql express 2008 and run the setup. Then I found that at the first time the exe required all the rights to convert so I tried the setup Run as Administrator and bingo the setup works for 2 different pc..
The only thing is required that at first time I need to run the application as Administrator.
Thanks for help I
I made C# application for my friend which has connection to access database (mdb file). I have developed application on my computer with win7 x86 installed. My friend had XP and it worked perfectly, but now he installed win7 x64 and application doesn't work. In fact, application starts and behave regular, but cannot connect to database... Database too can be opened with access, but my application cannot connect to it.
What can be a problem? How to make my application works on both operating systems?
regards,
Vajda
Ask your friend to download and install the following file:
Microsoft Access Database Engine 2010 Redistributable
and make sure he picks the 64-bit version there (AccessDatabaseEngine_x64.exe).
By default there is no 64-bit ODBC/OLEDB driver for Access installed, but the 2010 version should work for 2007 databases as well.
You could probably also configure your program to be built for the x86 target. That would run the program as a 32-bit program, even on 64-bit OS.
Most likely, the .Net CLR is trying to fire the app up in 64bit mode by default on his new win7 box and this might be causing some issues with the referenced assemblies.
The first thing I would try is to change the Platform target of the application (go to Project properties in Visual Studio for the application) to x86 (from Any CPU) to force the application to run in 32bit mode.
If this works, you will have narrowed down your problem.
Then, after building the project, look in the bin folder to see which assemblies are being copied to the output folder. If you see any System.Data... or any other .Net assemblies that are already contained in the GAC, you'll want to delete these and then try to fire it up. This will force the application to use GAC assemblies written for 64bit use.