Database not updating after UPDATE SQL statement in ASP.net - asp.net

Question

I currently have a problem attepting to update a record within my database. I have a webpage that displays in text boxes a users details, these details are taken from the session upon login. The aim is to update the details when the user overwrites the current text in the text boxes.
I have a function that runs when the user clicks the 'Save Details' button and it appears to work, as i have tested for number of rows affected and it outputs 1. However, when checking the database, the record has not been updated and I am unsure as to why.
I've have checked the SQL statement that is being processed by displaying it as a label and it looks as so:
UPDATE [users]
SET [email] = #email,
[firstname] = #firstname,
[lastname] = #lastname,
[promo] = #promo
WHERE [users].[user_id] = 16
The function and other relevant code is:
Sub Page_Load(sender As Object, e As EventArgs)
usernameLabel.text = session.contents.item("UserName")
if usernameLabel.text = "" then
logoutButton.Visible = False
loggedInAsLabel.Visible = False
else
labelGuest.Visible = False
linkLogin.Visible = False
linkRegister.Visible = False
end if
emailBox.text = session.contents.item("Email")
firstBox.text = session.contents.item("FirstName")
lastBox.text = session.contents.item("LastName")
promoBox.text = session.contents.item("Promo")
End Sub
Sub Button1_Click(sender As Object, e As EventArgs)
changeDetails(emailBox.text, firstBox.text, lastBox.text, promoBox.text)
End Sub
Function changeDetails(ByVal email As String, ByVal firstname As String, ByVal lastname As String, ByVal promo As String) As Integer
Dim connectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0; Ole DB Services=-4; Data Source=C:\Documents an"& _
"d Settings\Paul Jarratt\My Documents\ticketoffice\datab\ticketoffice.mdb"
Dim dbConnection As System.Data.IDbConnection = New System.Data.OleDb.OleDbConnection(connectionString)
Dim queryString As String = "UPDATE [users] SET [email]=#email, [firstname]=#firstname, [lastname]=#lastname, "& _
"[promo]=#promo WHERE ([users].[user_id] = " + session.contents.item("ID") + ")"
Dim dbCommand As System.Data.IDbCommand = New System.Data.OleDb.OleDbCommand
dbCommand.CommandText = queryString
dbCommand.Connection = dbConnection
Dim dbParam_email As System.Data.IDataParameter = New System.Data.OleDb.OleDbParameter
dbParam_email.ParameterName = "#email"
dbParam_email.Value = email
dbParam_email.DbType = System.Data.DbType.[String]
dbCommand.Parameters.Add(dbParam_email)
Dim dbParam_firstname As System.Data.IDataParameter = New System.Data.OleDb.OleDbParameter
dbParam_firstname.ParameterName = "#firstname"
dbParam_firstname.Value = firstname
dbParam_firstname.DbType = System.Data.DbType.[String]
dbCommand.Parameters.Add(dbParam_firstname)
Dim dbParam_lastname As System.Data.IDataParameter = New System.Data.OleDb.OleDbParameter
dbParam_lastname.ParameterName = "#lastname"
dbParam_lastname.Value = lastname
dbParam_lastname.DbType = System.Data.DbType.[String]
dbCommand.Parameters.Add(dbParam_lastname)
Dim dbParam_promo As System.Data.IDataParameter = New System.Data.OleDb.OleDbParameter
dbParam_promo.ParameterName = "#promo"
dbParam_promo.Value = promo
dbParam_promo.DbType = System.Data.DbType.[String]
dbCommand.Parameters.Add(dbParam_promo)
Dim rowsAffected As Integer = 0
dbConnection.Open
Try
rowsAffected = dbCommand.ExecuteNonQuery
Finally
dbConnection.Close
End Try
labelTest.text = rowsAffected.ToString()
if rowsAffected = 1 then
labelSuccess.text = "* Your details have been updated and saved"
else
labelError.text = "* Your details could not be updated"
end if
End Function
Any help would be greatly appreciated.

Answer 1

Does your page have a RequiresTransaction property? If so, check that there are no exceptions thrown elsewhere during the request which might cause the transaction to roll back - leaving the data unchanged.

Answer 2

Are you sure that you're updating the database you think you're updating? I don't like the look of that connection string at all (and, frankly, I doubt Paul Jarratt would be too happy to see it posted here).