Solved

Changing Connection String dynamically

Posted on 2009-03-31
5
159 Views
Last Modified: 2012-05-06
I am converting a VB6 app to .NET. In VB6, the connection string was set in code. The user could open a different database using an Open Dialog box. After selecting the file, the new path and name was saved for that and all future connections.

I don't know how to handle this change in .NET. I'm setting up data sources for most forms. When I create the data source, the Data Source Configuration Wizard asks for a connection string. Apparently, this gets saved in some configuration file. This would be fine if the database name and path were identical for every user, but I don't want to be forced into this scenario.

How can I give the user a dialog box to select a file and then, each time they launch the program, it will use that for the connection? I seemed to have read the connection string is read only.

Thanks.
0
Comment
Question by:LeeLiam
  • 3
  • 2
5 Comments
 
LVL 48

Expert Comment

by:jpaulino
ID: 24032686
Hi,
 You can save that configuration into settings.
http://www.emoreau.com/Entries/Articles/2007/03/AppSettings-revisited.aspx 
0
 

Author Comment

by:LeeLiam
ID: 24033300
Thank you. That is an excellent article and it will take me some time to fully digest it.

In the meantime, can I place a line of code like:

Me.TableAdapter.Connection.ConnectionString = OleConn.ConnectionString

before using the table adapter? Will this override the stored connection string?

Thanks.
0
 
LVL 48

Accepted Solution

by:
jpaulino earned 500 total points
ID: 24033345
Yes it will.
You save your new connection string in the settings and then you assing that to your datatable (on form load event for example)
0
 

Author Comment

by:LeeLiam
ID: 24033545
Perfect.

Thanks for your help.

(I assume you meant 'passing'. :) )
0
 
LVL 48

Expert Comment

by:jpaulino
ID: 24033567
LOL, it was a typo :)
Glad I could help!
0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

It’s quite interesting for me as I worked with Excel using vb.net for some time. Here are some topics which I know want to share with others whom this might help. First of all if you are working with Excel then you need to Download the Following …
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

832 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question