MVC :: Connecting To MS Access Database And Generate A LINQ To SQL Class For A Table?
Mar 31, 2010
I am creating a ASP.Net application in MVC architecture. I have to connect to a database on MS Access and be able to enter data into it. All examples I see use SQL Server. When I try from prject explorer Add New Item -> Data -> I am unable to find Drivers for Access Database.
From the Data Connections in Server Explrere window I was able to make a successful connection to the database.
Does MVC 2 support MS Access Database?
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Jul 1, 2010
I have a window form app with reports that connects to an Access Database i had already build the project and every single report works fine without any problem, Here is what's stange, when i try to add a new report to the project and try to connect to the database i am getting 'Visual studio has a problem and need to close' i don't know what is the problem, i can open the database and run queries without any problem but whenever i want to connect my newly created report to the database it just failed. It does not give me a detail error so i can fix it.
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Mar 3, 2010
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May 20, 2010
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Apr 22, 2010
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Apr 4, 2010
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<connectionStrings>
<add
name="ConnectString"
connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:foldersfilename.mdb"
providerName="System.Data.OleDb"/>
</connectionStrings>
And I refer to the connection like so:
<asp:sqlDataSource
ID="SqlDataSource3"
runat="server"
ConnectionString=
"<%$ ConnectionStrings:ConnectString %>"
ProviderName="<%$ ConnectionStrings:ConnectString.ProviderName %>"
SelectCommand="
but I recieve the error
Keyword not supported: 'provider'.
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.ArgumentException: Keyword not supported: 'provider'
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[Code]....
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May 26, 2010
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Feb 5, 2011
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Apr 9, 2010
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Jan 29, 2011
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Mar 15, 2011
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Aug 12, 2010
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Sep 7, 2010
Here's a short explanation of my asp.net project.
1) the default page loads, it will read the Windows Login of the user opening the page.
2) I'll check if this login exists in a table stored on the webserver.
In this Access Database, there's a 2nd linked table, pointing to another access table on a network location. Now, I want to read data from this linked table. However, at this moment I receive an error:
"The Microsoft Jet database engine cannot open the file '\<ip><shared-folder>statistics.mdb'. It is already opened exclusively by another user, or you need permission to view its data".
Some extra info:
- The network folder has read and write permissions for everyone
- the user and group permissions on both access files are set to read/modify/administer for the Admin user (on the tables I want to read from)
- IIS authentication on the server is set to "Windows Authentication" (this is needed so I can read the Windows Login from the user). All other authentication modes are disables (like anonymous, ...)
- When the error occurs, no other program or process has access to the statistics.mdb (so, it can't be locked by someone else)
- the web.config files access connection string looks like:
<add name="AccessConnectionString" connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\<IP><shared-folder>statistics.mdb;User Id=admin; Password=;" />
Like I said before, in this statistics.mdb file, there are 2 tables. One normal table, and another linked table (pointing to a network location)
Searching for solutions, I discovered the following:
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- even if I connect directly to the table in the network I receive the error. So, I'm pretty sure I don't have sufficient rights to read from this table.
I read that not the Admin user is opening the file, but actually a user called ASP.NET. This user doesn't have the correct rights to do this. However, I'm not sure if this is true.
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Jan 11, 2011
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Feb 20, 2011
or one of my project, I use Access 2007.I have application written by Access, that use database : Sql-Server 2007.I am using XP for the any company computer.The dsn file is on network, and include connectionString with username + password,ut I want to access the database from any user with automatic authentication (no need for user and password).
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Oct 6, 2010
I've a problem with my web application. I hosted a web site in IIS and initially its working good. After sometime ( i dont know the time diff exactly ), if i try to access my page its not working and after re-starting my application only its working. Let me explain about my project.
I've only 4 pages ( ex: main, a1,b1,c1 ) in my site. In main page i used IFrame to show other 3 pages by clicking the appropriate tab. Before this main page load, i'm connecting to DB (Oracle 10g) and i used "System.Data.OracleClient" class to communicate with oracle. Every time after retrieved data from DB i'll close the connection. Then i'll display the main page and assign other page url's to the tab.
Now the problem is after sometime if i access the main page, its not connecting to DB at all then i'll show some static message like "site is unavailable at this time". And i'm not using connection pooling concept. And also this problem is not occurring all time.
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Mar 16, 2011
A class in my ASP.NET website needs to access a database table multiple times for every request. The database table should rarely change, if ever. Maybe a couple times a month.
In the static constructor of the class, the table is fetched from the DB and cached in a static local variable. Whenever the class needs to access the table, then, it just uses the cached, static version.
My question concerns the lifespan of this cached, static version of the table.
I understand that it's fetched the first time the class is instantiated or a static method in the class is used. But how often does this occur on the web server? What if the table changes and we want to reset this static version of the table?
Basically, I'm wondering, is this table fetched once and then only refetched each time I restart IIS? What, with regard to the site and IIS, will trigger this static class to reset, causing the static table to be refetched?
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Mar 23, 2011
Im using Visual Web Developer 2010 Express and have put together a custom form using ASP controls and labels.
I now need to update an access database with the data that is captured on the form. I have added an AccessDataSource but do not know how to link the fileds to the fileds within the database so that when I click submit it updates the table.
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