?
Solved

How to declare a connectionstring?

Posted on 2014-01-29
4
Medium Priority
?
276 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
  • 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

Upgrade your Question Security!

Your question, your audience. Choose who sees your identity—and your question—with question security.

Question has a verified solution.

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

In my previous two articles we discussed Binary Serialization (http://www.experts-exchange.com/A_4362.html) and XML Serialization (http://www.experts-exchange.com/A_4425.html). In this article we will try to know more about SOAP (Simple Object Acces…
A long time ago (May 2011), I have written an article showing you how to create a DLL using Visual Studio 2005 to be hosted in SQL Server 2005. That was valid at that time and it is still valid if you are still using these versions. You can still re…
This video shows how to quickly and easily deploy an email signature for all users in Office 365 and prevent it from being added to replies and forwards. (the resulting signature is applied on the server level in Exchange Online) The email signat…
Enter Foreign and Special Characters Enter characters you can't find on a keyboard using its ASCII code ... and learn how to make a handy reference for yourself using Excel ~ Use these codes in any Windows application! ... whether it is a Micr…
Suggested Courses

621 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