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Widget #CS0042

Create a Session Database Connection through code (ASP.NET)

Format and License Info?

Free

VB.NET / ASP.NET
the source code below will connect to an Access Database, to change to SQL Server make the appropriate changes to the Connection String
Create a an xml file named datasource.xml, and save it to the bin directory of your web application
Use the following XML as a template
Substitute your application name and database file name below
<DataSource> 
<Path>C:\Inetpub\wwwroot\appname\databasename.mdb</Path>
</DataSource>
Make the following changes to your Global.asax.vb file
Sub Session_Start(ByVal sender As Object, ByVal e As EventArgs)
' Fires when the session is started 
Session("DBCon") = DBCon()
End Sub
Function DBCon() As System.Data.OleDb.OleDbConnection
Try
'Load datasource path from XML File
Dim xml As New System.Xml.XmlDocument()
xml.Load(Server.MapPath(".") & "\bin\datasource.xml")
'Pass value to Connection Path
Dim Path As String = xml.SelectSingleNode("/DataSource/Path[1]").InnerText()
'Build Connection String
Dim strConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Password='';User ID=Admin;Data Source=" & Path & ";Mode=Share Deny None"
'Open Database
DBCon = New System.Data.OleDb.OleDbConnection(strConnectionString)
DBCon.Open()
Catch

End Try
End Function
Function CloseDBCon(ByVal m_DBCon As System.Data.OleDb.OleDbConnection) As Boolean
m_DBCon.Close()
End Function
To use the Connection in a web form's code behind file
Dim DBCon as new System.Data.OleDb.OleDbConnection()
DBCon = Session("DBCon")
WARNING: If at anytime you close the connection to your database it must be re-opened before it can be used

Last Updated: 10/9/2019


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