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Error when connecting to a Foxpro database from a .NET web app
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Grinnell Almy
Hello all -

Here's the situation. I have a web server, and I'm developing a web application using VB.NET that will run on this server. I also have another server, which runs a third party Human Resources application, written in Visual Foxpro. Its databases are standard .dbf files.

I want to be able to connect to the .dbf files on the HR server directly from my web app on the web server. I have not been able to make this work. Here's what I've tried:

1. In the Server Explorer, I created a connection using Microsoft OLE DB Provider for Visual FoxPro. The connection string is:

User ID=;DSN=;Cache Authentication=False;
Data Source=""\\<HR Server>\<path>\<to>\<data>"";Password=;Provider=""VFPOLEDB.1"";
Collating Sequence=MACHINE;Mask Password=False;Mode=Share Deny None;Extended Properties=;
Encrypt Password=False".

When I run the app, when it tries to open the connection, I get this error message:

System.Data.OleDb.OleDbException: Invalid path or file name

However, if I put this line in Web.config:

<identity impersonate="true" userName="<domain>\Administrator" password="<nevermind>" />

it works. So I'm assuming I have a permissions issue here. But I don't want the password in clear text in the config file.

2. In the Server Explorer, I created a connection using Microsoft OLE DB Provider for ODBC Drivers, and I selected Visual FoxPro tables as the machine data source. The connection string is:

BackgroundFetch=Yes;DSN=Visual FoxPro Tables;UID=;SourceType=DBF;Collate=Machine;
SourceDB=\\<HR server>\<path>\<to>\<data>;Exclusive=No

When I run the app, when it tries to open the connection, I get this error message:

System.Data.Odbc.OdbcException: ERROR [IM002] [Microsoft][ODBC Driver Manager]
Data source name not found and no default driver specified

2a. In the Server Explorer, I created a connection using Microsoft OLE DB Provider for ODBC Drivers, and I selected dBase files as the machine data source. The connection string is:

MaxBufferSize=2048;DSN=dBASE Files;PageTimeout=5;DefaultDir=\\<HR server>\<path>\<to>\<data>;
DBQ=\\<HR server>\<path>\<to>\<data>;DriverId=533

But that gives the same result as in 2.) above.

I'd appreciate any ideas. Thank you.
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Cindy Winegarden
In news: Click here to reveal e-mail address,
Grinnell Almy <Click here to reveal e-mail address> wrote:
[Original message clipped]

Hi Grinnell,

Since your app runs on the web server, do you have a data source configured
on the web server that points to the file server where the FoxPro files
live?

--
Cindy Winegarden MCSD, Microsoft Visual FoxPro MVP
Click here to reveal e-mail address www.cindywinegarden.com
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tsun@nospamavectra.com
Has anybody done anything on this? I have exactly the same scenario.

Thanks.

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System.Data.Odbc.OdbcException
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