Unable to update or insert into Access database table using OleDB, and it doesn't return any errors.

Question

I'm new to VS. I have run the following code. It does not produce any error, and it does not add or update data to my Access database table.
dbUpdate("UPDATE prgSettings SET varValue='test' WHERE varSetting='test'")   
Function dbUpdate(ByVal _SQLupdate As String) As String
        Dim OleConn As New OleDbConnection(My.Settings.DatabaseConnectionString.ToString)
        Dim oleComm As OleDbCommand
        Dim returnValue As Object
        Dim sqlstring As String = _SQLupdate.ToString
        Try
            OleConn.Open()
            MsgBox(OleConn.State.ToString)
            oleComm = New OleDbCommand(sqlstring, OleConn)
            returnValue = oleComm.ExecuteNonQuery()
        Catch ex As Exception
            ' Error occurred while trying to execute reader
            ' send error message to console (change below line to customize error handling)
            Console.WriteLine(ex.Message)
            Return 0
        End Try
        MsgBox(returnValue)
        Return returnValue
End Function
Any suggestions will be appreciated.
Thanks.

Answer 1

You code looks pretty good, at a quick glance.  Maybe you can simplify things a bit.
For Insert, please see these samples.
http://www.java2s.com/Code/CSharp/Database-ADO.net/Insert.htm
For Update, please see these samples.
http://www.java2s.com/Code/CSharp/Database-ADO.net/Update.htm
Knowledge is the only thing that I can give you, and still retain, and we are both better off for it.
Best to keep samples here to VB.NET
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