DB/Reporting :: Remote Access Of A SQLEXPRESS Database Using VB2008?
Jun 24, 2008
I'm currently designing a client application that connects to a SQL Server 2005 database. My app is being used to display data, allows users to run reports and stats on the data. It is being developed using VB2008. Within my VB2008 project, the connection string to the DB is made via SQLEXPRESS.
The road block that I'm running into right now is that it only allows me to connect to a local DB file (.mdf) only. I tried to connect to a different DB file on a server within the same network domain, and it generated the following error:
"The file "U:Data.mdf" is on a network path that is not supported for database files. An attempt to attach an auto-named database for file U:Data.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share." (where U: is a mapped network drive).
Below is the actual connection string in my code:
"SERVER=.SQLEXPRESS;AttachDbFilename=U:Data.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"
The intention is to have the DB reside on a server, where there is another application that runs as a service to collect the data and then populates this DB. Then my app would just connect to the database, and allows users to run reports based on the data in the DB.
I heard that this is the limitation of SQLEXPRESS: it will not allow connection to a remote database. This is true? If so, is there anyway that I can get around this limitation?
The main reason that I chose SQLEXPRESS in the first place is that because of the licensing issue. The company that I work for do not want to make the users of our software app have to purchase additional license for the full-blown SQL Server Enterprise edition. I also heard that SQL Server Enterprise edition does allow you to connect to a remote DB (.mdf) file.
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See my code for inserting and updating (using Access.mdb) which I whoud like transpose to SQL
'// Insert a record into the database for the node.
sSql = "INSERT INTO [TreeViewItems] (bRoot, dLastModified, iImageIndex," & _
"iParentID, iSelectedImageIndex, iSort, sName, sFullName) VALUES " & _
[CODE]...
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[Code]....
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[Code]...
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Imports System.Data.OleDb
Public Class Main_Form
Dim con As OleDbConnection
Dim cmd As OleDbCommand
[code].....
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Dim NotifyDS As New DataSet()
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[Code]...
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Code:
Private Sub btnGetReport_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGetReport.Click
Dim StartDate, EndDate As Date
[Code]....
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Private Function FillTable(ByVal TableToFill As DataTable, _
Optional ByVal OleDbAdpToUse As OleDb.OleDbDataAdapter = Nothing) As Integer
' fills the table by using OleDbDataAdapter.Fill(aTable)
[code]...
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CommunityChest(Number, Detail, Action, Amount, Owner)
[CODE]........
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[Code].....
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