hey,
i am new at connecting to dataBases and for some reason each time i use those following lines my program collapse:
string connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;DataSource=|DataDirectory|\Company.accdb"
OleDbConnection con = new OleDbConnection(connectionString);
inside my debug folder i got Company.accdb access file
edit:
i am getting 'Microsoft.Ace.OLEDB12.0' provider is not registered on the local machine any idea how to solve it?
thanks in advance for your help
Two things -
This connection string rely on ACE OLEDB provider (typically comes with Office 2007 - your machine need to have this provider)
Connection string is requesting data dictionary. You probably need to use below form:
Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\myFolder\myAccess2007file.accdb;Persist Security Info=False;
For password protected files, form would be Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\myFolder\myAccess2007file.accdb;Jet OLEDB:Database Password=MyDbPassword;
I will also suggest trying different Provider (ODBC perhaps) instead. For various connection strings for Access 2007, refer http://www.connectionstrings.com/access-2007
Related
I'm trying to update table into an .accdb file by a C# program.
I've opened the connection in this way:
cn.ConnectionString= #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:\test.accdb;Persist Security Info=True;Database Password=myDb";
cmd.Connection = cn;
string query = "UPDATE MY_TABLE SET NOTE='TEST'";
cmd.CommandText = query;
cn.Open();
but I get this error:
Could not find installable ISAM
I also installed the AccessDatabaseEngine x86, but nothing happened.
Any suggestions?
Thanks!
“Could not find installable isam” is a bit of a generic catch all, usually connection string or driver bitness related. For connection strings that use extended properties like Database Password they may need to be prefixed with something to make it assigned as an extended property of that particular driver
In your case I think you’re missing the relevant specifier for the database password property, which isn’t a typical OLE connectionstring property:
Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:\test.accdb; Jet OLEDB:Database Password=MyDbPassword;
Note the extra “Jet OLEDB” before the database password specifier
connectionstrings.com has a raft of info for these things and serves as a handy resource for many different thins that Jet and Ace can connect to
I have an Excel .odc file which defines an OLEDB connection like so:
Provider=MSOLAP.5;Integrated Security=SSPI;Persist Security Info=True;User ID="";Initial Catalog="";Data Source=xxx.xxx.com\tabular;Location=xxx.xxx.com\tabular;MDX Compatibility=1;Safety Options=2;MDX Missing Member Mode=Error
Is it possible for me to open the database using SqlConnection in C# using this?
There is nothing built into .Net outside of Office Interop (actually opening an instance of Excel), an Office Add-In (Excel is already opened, and the code runs as a macro), or Reporting Services + Sharepoint to use *.odc files to connect to a database. You will have to write your own code to open the file, parse the values out for a connection string, and use that string to connect to a database.
When you go to write this code, be careful: ODC is not-quite valid XML.
I have a winForm application which will be used by more than one persone, I want to put the database in a machine server so can everyone connect to it from this application.
I'm using SqlServer database, this database will be located in a local network.
This is the connection string I use to get data from a database located in my machine
string con = "Data Source=MSSQL1;Initial Catalog=AdventureWorks;Integrated Security=true;";
My question is what is the connection string that I should use to get data from database located in a machine server ?
Is it something like this ?
Data Source=190.190.200.100,1433;Network Library=DBMSSOCN;Initial Catalog=myDataBase;User ID=myUsername;Password=myPassword;
Thanks.
Without any specific information nobody will be able to answer this for you, however This Resource. might help you find it for yourself.
I'm using this connection string to access excel(2007,2010) files
oleConnection.ConnectionString = #"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filepath + ";Extended Properties='Excel 12.0;HDR = NO;IMEX = 1;'";
this work fine until i try to get data from protected List.
I know the protection password.
So how could i access protected list?
As per MSDN you can provide the credentials with the connection string User ID=UserX;Password=UserXPassword but this works for access
But
I'm afraid. You cannot open a connection to a password-protected
spreadsheet unless you have already manually opened the spreadsheet in
Excel . The described error is with the
Excel ODBC provider, but the behavior is identical in the Jet 4.0 OLE
DB provider. Your other option is to remove the password from the
spreadsheet, and rely on some other security mechanism (like
restricting permissions on the folder where the file resides) to
control access.
I'm trying to create an OleDb connection to an Excel file that is located on a SharePoint server. The example code I'm playing with at the moment throws an OleDb exception "Invalid internet address":
public static void ConnectToRemoteExcelFile()
{
string connectionString = String.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=\"Excel 8.0;HDR=Yes;\";", "http://horde.servername.co.uk/Docs/Documents/Sales.xlsx");
using (OleDbConnection connection = new OleDbConnection(connectionString))
{
connection.Open();
}
}
Anyone know how to connect to an excel spread sheet on a web server?
Update
Microsoft support have come back to me and agree that is not possible to connect to Excel files located on a web server. Both Jet .40 and the news ACE (Access Connectivity Engine) do not support this mode of operation. They cite reference to the KB Article "The Import/Link Data on an FTP or HTTP Server Help topic is not correct in Access 2000, Access 2002, Access 2003 and Access 2007"
As far as I know that is not possible, you would have to download the file first, then access it. The reason being is that the file could not be modified given its location.