?
Solved

How to declare a connectionstring?

Posted on 2014-01-29
4
Medium Priority
?
273 Views
Last Modified: 2014-01-29
Hi,

I have this below to create a button in my application to give the user the ability to compact the database that is connected to the application.

        private void bbComDb_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            string AccessConnectionString = Properties.Settings.Default.DBRootConnectionString;
            AccessConnectionString.Close(); <=====================
            CompactAccessDB();
            AccessConnectionString.Open();<=====================
        }
        

        public static void CompactAccessDB()
                {
            try
            {
                string File_Path;
                string compact_file;
                File_Path = Application.StartupPath + "DBRoot.mdb";
                compact_file = Application.StartupPath + "DBRoot.mdb";
                if (File.Exists(File_Path))
                {
                    JRO.JetEngine objJet = new JRO.JetEngine();
                    objJet.CompactDatabase(File_Path, compact_file);
                }
                if (File.Exists(compact_file))
                {
                    File.Delete(File_Path);
                    File.Move(compact_file, File_Path);
                }
            }
            catch (Exception ex)
            {
                XtraMessageBox.Show(ex.Message);
            }
        }

Open in new window


But i get error declaring the connectionstring in the Settings.settings file:

'string' does not contain a definition for 'Close' and no extension method 'Close' accepting a first argument of type 'string' could be found (are you missing a using directive

I have marked the errors with an arrow.

Who can help me?

Greetings,

peter Kiers
0
Comment
Question by:peterkiers
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 25

Expert Comment

by:Luis Pérez
ID: 39817399
You're calling a "Close" method on a string. You must close the connection, not the connection string.

I mean, if you want to close a database, I guess you have it open. Where is your database? In the code you provided there is no database, only the connection string stored in a string value.
0
 
LVL 1

Author Comment

by:peterkiers
ID: 39817403
The DB is stored in the application folder:
Application.StartupPath + "DBRoot.mdb";

And de connectionstring is stored in het settings.settings file:
Properties.Settings.Default.DBRootConnectionString

P.
0
 
LVL 25

Accepted Solution

by:
Luis Pérez earned 2000 total points
ID: 39817406
Well, what I'm trying to say is that you cannot close a connection string. You can close an open connection to the database. Where is that connection? You must be working with it in order to show data from your db into your app and vice versa.
0
 
LVL 1

Author Comment

by:peterkiers
ID: 39817409
Got it. Your right Luis. I have found it and solved it myself. Thanks for the information.

Greetings, Peter kiers
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Flash (http://en.wikipedia.org/wiki/Adobe_Flash) has evolved over the years to where it has become a masterful tool for displaying content screen.  It has excellent layout placement, UI precision as well as rendering capabilities. This, along with t…
In my previous article (http://www.experts-exchange.com/Programming/Languages/.NET/.NET_Framework_3.x/A_4362-Serialization-in-NET-1.html) we saw the basics of serialization and how types/objects can be serialized to Binary format. In this blog we wi…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…
Monitoring a network: how to monitor network services and why? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the philosophy behind service monitoring and why a handshake validation is critical in network monitoring. Software utilized …
Suggested Courses

771 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